ENetwork Final Exam CCNA 1 4.0 2012 100% Take Assessment – ENetwork Final Exam – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1. A network technician has made a UTP cable that is terminated as T568A on one end and T568B on the opposite end. What type of cable has been constructed?

patch
console
crossover
straight-through

2.

Refer to the exhibit. A technician is working on a network problem that requires verification of the router LAN interface. What address should be pinged from this host to confirm that the router interface is operational?
127.0.0.1
192.168.64.196
192.168.254.1
192.168.254.9
192.168.254.254

3.

Refer to the exhibit. A network administrator remotely accesses the CLI of RouterB from PC1 using Telnet. Which statement is true about this connection?
The data is automatically encrypted.
A Telnet server process is running on PC1.
The connection is made through a VTY session on the router.
A GET request was sent to RouterB to retrieve data during this session.

4. Which three addresses belong to the category of public IP addresses? (Choose three.)
127.0.0.1
196.1.105.6
132.11.9.99
10.0.0.1
172.16.9.10
46.1.1.97

5. Which range of port numbers are reserved for services that are commonly used by applications that run on servers?
0 to 255
0 to 1023
1024 to 49151
49152 to 65535

6. Which prompt represents the appropriate mode used for the copy running-config startup-config command ?
Switch-6J>
Switch-6J#
Switch-6J(config)#
Switch-6J(config-if)#
Switch-6J(config-line)#

7. Which two factors contribute to the increased throughput when all nodes of a LAN are connected to a switch instead of a hub? (Choose two.)
full-duplex operation
collision-free environment
logical bus media access
broadcast-free environment
point-to-multipoint topology

8. A network administrator is configuring several switches for a network. The switches have similar configurations and only minor differences. The administrator wants to save all commands that are issued on the first switch to a text file for editing. Which transfer option should be selected in HyperTerminal?
Send File…
Receive File…
Capture Text…
Send Text File…

9. An organization has been assigned network ID 10.10.128.0 and subnet mask 255.255.224.0. Which IP address range can be used for this organization?
10.10.128.0 to 10.10.160.255
10.10.128.0 to 10.10.159.255
10.10.128.0 to 10.10.192.255
10.10.128.0 to 10.10.0.159
10.10.128.0 to 10.10.159.0

10. What is described by the network access layer of the TCP/IP model?
rules for packet acknowledgment, error recovery, and sequencing
rules for the handoff from the internet layer to the network access protocols
rules for how source and destination hosts exchange data between programs
rules for determining which processes can be used to route messages through an internetwork

11. A technician is setting up a workgroup for six users and wants to allow users to share files without setting up a server. Which application layer protocol will provide for peer-to-peer file sharing in a workgroup?
DNS
SMB
HTTP
DHCP

12.

Refer to the exhibit. Which type of network design is shown?
client/server
wide area
dedicated server
peer-to-peer

13.

Refer to the exhibit. A network technician wants to connect host A to the console of a Cisco switch to initialize the configuration. What type of cable is required for this connection?
straight-through cable
crossover cable
rollover cable
serial cable

14. What command can be used to troubleshoot domain name resolution issues?
get
arp -a
tracert
nslookup

15.

Refer to the exhibit. When host A sends a frame addressed for host D, which hosts will receive the frame?
only host D
only hosts A and D
only hosts B, C, and D
all hosts

16.

The tracert 10.1.3.2 command was issued on computer A. Computer A can ping other addresses on the local subnet. Computer A sent the first ICMP packet toward computer B with a TTL value of 1. A protocol analyzer that was running on computer B showed that the packet never reached its destination. Why did the packet not reach the destination?
There is a TCP/IP problem on computer A.
There is a routing loop between R1 and R2.
R1 does not have a route for the destination network.
The TTL for the packet was decreased to zero by R1.

17. A user enters http://www.cisco.com/web1.htm in the address line of a browser. Which statement is true about this transaction?
The “http” portion indicates the protocol that is being used.
The “web1.htm” portion is the specific service name.
The retrieved web page will be displayed in URL code.
The “www.cisco.com” is the name of the web page file that is called.

18. When must a router serial interface be configured with the clock rate command?
when the interface is functioning as a DTE device
when the interface timers have been cleared
when the connected DTE device is shut down
when the interface is functioning as a DCE device

19. Which option shows the PDU that contains the Layer 3 source and destination addressing for a packet?

Option 3

20. Which communication tool allows real-time collaboration?
wiki
e-mail
weblog
instant messaging

21.

Refer to the exhibit. Host A attempts to establish a TCP/IP session with host C. During this attempt, a frame was captured with the source MAC address 0050.7320.D632 and the destination MAC address 0030.8517.44C4. The packet inside the captured frame has an IP source address 192.168.7.5, and the destination IP address is 192.168.219.24. At which point in the network was this packet captured?
leaving host A
leaving ATL
leaving Dallas
leaving NYC

22.

Refer to the exhibit. Which application layer service was used to determine the IP address assigned to the URL?
DNS
HTTP
ICMP
IP

23. Which router component will have contents erased when the command erase startup-config is issued?
flash
RAM
ROM
NVRAM

24. Which prompt is associated with the privileged exec mode?
R1>
R1#
R1(config)#
R1(config-router)#

25. Which scenario describes a typical peer-to-peer network environment?
An employee downloads a file that is stored on a departmental file server.
An employee edits and reviews web pages on a web server that is located in the server farm.
A teleworker logs into a core router of the corporate network and makes a configuration change.
A user on one office PC sends output to a printer that is attached to the USB port of another PC in an adjacent office.

26. To enhance security in a network, the network administrator uses these commands:
Router(config)# line console 0
Router(config-line)# password j1mdi2
Router(config-line)# login
What two conclusions are evident from these commands? (Choose two.)
Users who attempt to connect to the console port of the router must enter a password.
The entries permit access through the console by the use of j1mdi2 as the password.
The entries eliminate the need for authentication.
Access through the console will be denied because the console configuration is incomplete.
The entries prevent passwords from being displayed as plain text.

27.

Refer to the exhibit. Which option correctly identifies the network address, range of host addresses, and the broadcast address for the network that contains host A?
172.16.0.0–172.16.0.1-172.16.47.254–172.16.47.255
172.16.16.0–172.16.0.1-172.16.47.254–172.16.47.255
172.16.32.0–172.16.32.1-172.16.47.254–172.16.47.255172.16.32.0 –172.16.32.1-172.16.63.254–172.16.63.255

28.

Refer to the exhibit. Host A is able to access resources on the local LAN but is unable to access any resources on the Internet. What is the likely cause of this problem?
The host subnet mask in incorrect.
The network uses private addresses.
The host address is a network address.
The default gateway is on a different subnet from the host.

29. A routing issue has occurred in your internetwork. Which of the following type of devices should be examined to isolate this error?
access point
host
hub
router
switch

30.

Refer to the exhibit. For connecting two routers with an Ethernet crossover cable, which interface should be used?
A
B
C
D

31. Which option represents a point-to-point logical topology diagram?

Option 4

32. Which OSI layer manages data segments?
application layer
presentation layer
session layer
transport layer

33. Which two types of media can provide bandwidth up to 1 Gb/s? (Choose two.)
10 BASE-T
100 BASE-T
100 BASE-FX
1000 BASE-TX
1000 BASE-SX

34.

Refer to the exhibit. An employee wants to access the organization intranet from home. Which intermediary device should be used to connect the organization intranet to the Internet to enable this access?
hub
switch
router
wireless access point

35. How many host addresses may be assigned when using the 128.107.0.0 network address with a subnet mask of 255.255.248.0?
30
256
2046
2048
4094
4096

36.

Refer to the exhibit. What function does router RT_A need to provide to allow Internet access for hosts in this network?
address translation
DHCP services
ftpd
web server

37. Which application belongs to the category of the client/server model?
using Telnet to access a router
exchanging information via instant messaging
printing a document to a locally connected printer
scanning a document with a directly connected scanner

38.

Refer to the exhibit. Which two layers of the OSI model describe the same functions as the transport and internet layers of the TCP/IP model? (Choose two.)
application layer
presentation layer
session layer
transport layer
network layer
data link layer
physical layer

39. Which application layer protocol allows administrators to log into a server from remote locations and control a server as though logged in locally?
DNS
FTP
DHCP
SMTP
Telnet

40. A technician is asked to secure the privileged EXEC mode of a switch by requiring a password. Which type of password would require this login and be considered the most secure?
console
enable
enable secret
VTY

41.

Refer to the exhibit. What two facts can be determined from the session information that is displayed? (Choose two.)
The protocol is a connection-oriented protocol.
This exchange is part of the three-way handshake.
The SYN flag is representing the initial establishment of a session.
The destination port indicates that an FTP session has been initiated.
The source port does not support communication with the destination port that is listed.

42.

Refer to the exhibit. RouterB is configured properly. The Ethernet interface Fa0/0 of RouterA is configured with the use of the commands that are shown. However, a ping from the Fa0/0 interface of RouterA to the Fa0/0 interface of RouterB is unsuccessful. What action should be taken on RouterA to solve this problem?
Use the description command on the FastEthernet interface Fa0/0.
Configure the clock rate of the FastEthernet interface Fa0/0.
Use the no shutdown command on the FastEthernet interface Fa0/0.
Reboot the router.

43.

Refer to the exhibit. Communication for hosts X and Y is restricted to the local network. What is the reason for this?
Host X is assigned a network address.
Host Y is assigned a multicast address.
Host X and host Y belong to different networks.
The gateway addresses are broadcast addresses.

44. Which topology divides the collision domain and provides full media bandwidth to the hosts in the network?
HUB1-HUB2
SW1-HUB1
SW1-SW2
HUB1-HUB2-HUB3

45.

Refer to the exhibit. The ping 127.0.0.1 command is issued on the local host. What do the ping results indicate?
The local host can send packets on the local network.
The TCP/IP stack on the local host operates properly.
The local host has full connectivity to the default gateway.
The local host has full connectivity to the remote network.

46. A technician makes several changes to the running configuration on a router, but the desired results are not achieved. The technician issues the reload command. What action will be taken by the router?
All changes will be lost and the router will restart immediately.
Changes will be saved automatically and the router will restart.
The user will be prompted to save changes before the router restarts.
The router will detect changes to the running configuration and will reload using the configuration stored in RAM.

47. What is the effect of the command copy running-config tftp?
copies the configuration from a remote machine into RAM
copies the configuration from a remote machine into NVRAM
copies the configuration currently in RAM to a remote machine
copies the configuration currently in NVRAM to a remote machine

48.

Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?
Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.
Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.

49.

Refer to the exhibit. A network technician is trying to determine the correct IP address configuration for Host A. What is a valid configuration for Host A?
IP address: 192.168.100.19; Subnet Mask: 255.255.255.248; Default Gateway: 192.16.1.2
IP address: 192.168.100.20; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.17
IP address: 192.168.100.21; Subnet Mask: 255.255.255.248; Default Gateway: 192.168.100.18
IP address: 192.168.100.22; Subnet Mask: 255.255.255.240; Default Gateway: 10.1.1.5
IP address: 192.168.100.30; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.1.1
IP address: 192.168.100.31; Subnet Mask: 255.255.255.240; Default Gateway: 192.168.100.18

50. Which physical component is used to access and perform the initial configuration on a new unconfigured router?

Option 2

51. What can the user do from the command prompt, Router(config-line)# ?
Configure one of the network interfaces.
Configure one of the physical or virtual lines.
Verify the running configuration on the device.
Configure the parameters for one of the routing protocols.

52.

Refer to the exhibit. Host A is unable to reach host B on the remote network. A technician attempted to ping the local gateway and the ping was successful. To verify the host configuration, the technician issued the ipconfig command. What is the likely cause of the problem?
The local NIC is incorrectly configured.
The subnet mask on host A is incorrectly configured.
The IP address on host A is incorrectly configured.
The default gateway on host A is incorrectly configured.

UPDATE Febuary 2012

53. Which three commands will change the current configuration mode of a router? (Choose three.)
router rip
line vty 0 4
password class
hostname RouterA
enable secret class
interface fastethernet 0/1

54. What type of IP address should be assigned to a web server?
static
dynamic
multicast
broadcast

Read more ...

ENetwork Chapter 10 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 10 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1.

Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)
connecting a PC to a router’s console port
connecting two routers together via their fast ethernet ports
connecting two switches together at gigabit speeds
connecting a PC to a switch at Gigabit Ethernet speeds
connecting two devices with the same interface type at Fast Ethernet speeds

2. Which three statements are true about the role of routers in the network? (Choose three.)
They propagate broadcasts.
They enlarge collision domains.
They segment broadcast domains.
They interconnect different network technologies.
Each router interface requires a separate network or subnet.
They maintain a common frame format between LAN and WAN interfaces.

3.

Refer to the exhibit. A network administrator has decided to use packet capture software to evaluate all traffic from the student subnet on the way to the Internet. To ensure that all packets are captured, what network device should be used to connect the monitoring station to the network between R1 and R2?
router
hub
switch
wireless access point

4. A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?
STP
UTP
coaxial
single-mode fiber
multimode fiber

5.

Refer to the exhibit. Which three statements are true about the exhibited topology? (Choose three.)
Hosts B and C are in the same subnet.
Five broadcast domains are present.
Host B is using a crossover cable to connect to the router.
Four broadcast domains are present.
Five networks are shown.
Host B is using a rollover cable to connect to the router.

6. Which three types of connectors are commonly associated with Cisco’s V.35 serial cables? (Choose three.)
RJ 11
DB 60
Winchester 15 pin
DB 9
smart serial
RJ 45

7. How many host addresses may be assigned on each subnetwork when using the 130.68.0.0 network address with a subnet mask of 255.255.248.0?
30
256
2046
2048
4094
4096

8.

Refer to the exhibit. Based on the IP configuration shown, what would be the result of Host A and Host B attempting to communicate outside the network segment?
both host A and B would be successful
host A would be successful, host B would fail
host B would be successful, host A would fail
both Host A and B would fail

9.

Refer to the exhibit. What destination IP address will PC1 place in the header for a packet destined for PC2?
192.168.1.1
192.168.2.1
192.168.2.2
192.168.3.1
192.168.3.54

10.

Refer to the exhibit. Which three statements identify the type of cabling that would be used in the segments that are shown? (Choose three.)
Segment 1 uses backbone cabling.
Segment 1 uses a patch cable.
Segment 3 uses patch cabling.
Segment 3 uses vertical cabling.
Segment 3 uses horizontal cabling.
Segment 4 uses vertical cabling.

11. A company is planning to subnet its network for a maximum of 27 hosts. Which subnet mask would provide the needed hosts and leave the fewest unused addresses in each subnet?
255.255.255.0
255.255.255.192
255.255.255.224
255.255.255.240
255.255.255.248

12.

Refer to the exhibit. A student is setting up a home network primarily used for extensive file transfers, streaming video, and gaming. Which network device is best suited to these types of activities in the topology shown?
wireless access point
router
hub
switch

13.

Refer to the exhibit. How many subnets are required to support the network that is shown?
2
3
4
5

14. What does the term “attenuation” mean in data communication?
loss of signal strength as distance increases
time for a signal to reach its destination
leakage of signals from one cable pair to another
strengthening of a signal by a networking device

15. To establish a console connection from a computer to a Cisco router, which cable wiring option would be used?
crossover cable
straight through cable
rollover cable
V.35 cable

16. What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)
greater distances per cable run
lower installation cost
limited susceptibility to EMI/RFI
durable connections
greater bandwidth potential
easily terminated

17.

Refer to the exhibit. A network technician has been allocated the 192.168.1.0/24 private IP address range for use in the network that shown in the exhibit. Which subnet mask would be used to meet the host requirements for segment A of this internetwork?
255.255.255.128
255.255.255.192
255.255.255.224
255.255.255.240
255.255.255.248

18. Which subnet mask would be assigned to the network address of 192.168.32.0 to provide 254 useable host addresses per subnetwork?
255.255.0.0
255.255.255.0
255.255.254.0
255.255.248.0

19. What type of network cable is used between a terminal and a console port?
cross-over
straight-through
rollover
patch cable

20. Which option identifies the primary interface which would be used for initial configuration of a Cisco router?
AUX interface
Ethernet interface
serial interface
console interface

21. What are two common methods for setting a UTP Ethernet port to MDI or MDIX operation? (Choose two.)
cable color code association
cable selection and configuration
use of cable testers to determine pinouts
the automatic detection and negotiating of MDI/MDIX operation of the port
the enabling of the mechanism to electrically swap the transmit and receive pairs

22. Which device is used to create or divide broadcast domains?
hub
switch
bridge
router
repeater

23.

Refer to the exhibit. Assume that all devices are using default settings. How many subnets are required to address the topology that is shown?
1
3
4
5
7

24. What are three common methods for setting a UTP Ethernet port to MDI or MDIX operation? (Choose three.)
direct configuration of the device
cable color code association
cable selection and configuration
use of cable testers to determine pinouts
the enabling of the mechanism to electrically swap the transmit and receive pairs
the automatic detection and negotiating of MDI/MDIX operation of the port

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ENetwork Chapter 11 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 11 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1.

Refer to the exhibit. What command will place the router into the correct mode to configure an appropriate interface to connect to a LAN?
UBAMA# configure terminal
UBAMA(config)# line vty 0 4
UBAMA(config)# line console 0
UBAMA(config)# interface Serial 0/0/0
UBAMA(config)# interface FastEthernet 0/1

2. In a Cisco router, when do changes made to the running-configuration take effect?
after a system restart
as the commands are entered
when logging off the system
when the configuration is saved to the startup-configuration

3.

Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
enable password class
line console 0
password ccna

enable secret cisco
enable password class
line console 0
password ccna

enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0
enable password class
line console 0
password ccna

enable secret cisco
enable password 7 14141E0A1F17
line console 0
password 7 020507550A

enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0
enable password 7 14141E0A1F17
line console 0
password 7 020507550A

4. When network services fail, which port is most often used to access a router for management purposes?
AUX
Ethernet
Console
Telnet
SSH

5.

Refer to the exhibit. A network administrator on HostA has problems accessing the FTP server. Layer three connectivity testing was successful from HostA to the S1 interface of RouterB. Which set of commands will allow the network administrator to telnet to RouterB and run debug commands?

RouterB(config)# enable secret class
RouterB(config)# line vty 0 4
RouterB(config-if)# login

RouterB(config)# enable secret class
RouterB(config)# line vty 0 2
RouterB(config-vty)# password cisco
RouterB(config-vty)# login

RouterB(config)# enable secret class
RouterB(config)# line vty 0
RouterB(config-line)# password cisco
RouterB(config-line)# login

RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-line)# password cisco
RouterB(config-line)# login

RouterB(config)# enable secret class
RouterB(config)# line aux 0
RouterB(config-vty)# password cisco
RouterB(config-vty)# login

6. Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?
show running-config
show startup-config
show interfaces
show ip route
show version
show memory

7.

Refer to the exhibit. Which names correctly identify the CLI mode represented by the prompt for Switch-East4#? (Choose two.)
line configuration mode
user executive mode
global configuration mode
privileged executive mode
interface configuration mode
enable mode

8. What command is used to change the default router name to Fontana?
Router# name Fontana
Router# hostname Fontana
Router(config)# name Fontana
Router(config)# hostname Fontana

9.

The serial connection shown in the graphic needs to be configured. Which configuration commands must be made on the Sydney router to establish connectivity with the Melbourne site? (Choose three.)
Sydney(config-if)# ip address 201.100.53.2 255.255.255.0
Sydney(config-if)# no shutdown
Sydney(config-if)# ip address 201.100.53.1 255.255.255.224
Sydney(config-if)# clock rate 56000
Sydney(config-if)# ip host Melbourne 201.100.53.2

10.

Refer to the exhibit. The output is shown for the show ip route command executed on Router A. What does the IP address 192.168.2.2 represent?
Gateway for the 192.168.1.0 network
Gateway for the 192.168.3.0 network
IP assigned to the serial port on Router A
IP assigned to the serial port on Router B

11.

Refer to the exhibit. What additional command is required to allow remote access to this switch?
NA-SW1(config-if)# no shutdown
NA-SW1(config)# enable password password
NA-SW1(config)# ip default-gateway address
NA-SW1(config-if)# description description

12. Immediately after a router completes its boot sequence, the network administrator wants to check the routers configuration. From privileged EXEC mode, which of the following commands can the administrator use for this purpose? (Choose two.)
show flash
show NVRAM
show startup-config
show running-config
show version

13. Which three terms correctly define the forms of help available within the Cisco IOS? (Choose three.)
hot keys
context-check
context-sensitive
structured check
command override
command syntax check

14.

Refer to the exhibit. A student is responsible for the IP addressing, configuration and connectivity testing of the network shown in the graphic. A ping from host B to host C results in a destination unreachable but a ping from host B to host A was successful. What two reasons could account for this failure based on the graphic and partial router output for the Dallas router? (Choose two.)
The host A is turned off.
The Fa0/0 interface on Dallas is shutdown.
The LAN cable is disconnected from host B.
The S0/0/1 IP address of Dallas is improperly configured.
The Fa0/0 interface on Dallas is in a different subnet than host B.
The clock rate is missing on the serial link between Dallas and NYC.

15. Which combination of keys would be used at the CLI prompt to interrupt a ping or traceroute process?
Ctrl-C
Ctrl-P
Ctrl-R
Ctrl-Shift-6
Ctrl-Z

16.

The connection between routers B and C has been successfully tested. However, after rebooting router C, the administrator noticed the response time between networks 10.10.3.0 and 10.10.4.0 is slower. Ping between the two routers is successful. A trace route indicates three hops from router B to router C. What else can be done to troubleshoot the problem?
Ping router B S0/1 connection from router C.
Trace the connection between router B to router C S0/1.
Issue a show ip route command in router B to verify routing is enabled.
Issue a show interfaces command on router C.

17. In a Cisco device, where is the IOS file stored prior to system startup?
RAM
ROM
Flash
NVRAM

18. On a Cisco router, which interface would be used to make the initial configuration?
FE 0/1
Console
AUX
SERIAL0

19. A network administrator needs to keep the user ID, password, and session contents private when establishing remote CLI connectivity with a router to manage it. Which access method should be chosen?
Telnet
Console
AUX
SSH

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ENetwork Chapter 8 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 8 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1. Which type of cable run is most often associated with fiber-optic cable?

backbone cablehorizontal cable
patch cable
work area cable

2. In most business LANs, which connector is used with twisted-pair networking cable?
BNC
RJ-11
RJ-45Type F

3. When is a straight-through cable used in a network?
when connecting a router through the console port
when connecting one switch to another switch
when connecting a host to a switchwhen connecting a router to another router

4. With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?
the magnetic field around the adjacent pairs of wirethe use of braided wire to shield the adjacent wire pairs
the reflection of the electrical wave back from the far end of the cable
the collision caused by two nodes trying to use the media simultaneously

5. Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?
Presentation
Transport
Data Link
Physical

6. An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
light injector
OTDRTDR
multimeter

7. XYZ Company is installing new cable runs on their data network. What two types of cable would most commonly be used for new runs? (Choose two.)
coax
Cat4 UTP
Cat5 UTPCat6 UTPSTP

8. What is a possible effect of improperly applying a connector to a network cable?
Data will be forwarded to the wrong node.
Data transmitted through that cable may experience signal loss.An improper signaling method will be implemented for data transmitted on that cable.
The encoding method for data sent on that cable will change to compensate for the improper connection.

9. What are three measures of data transfer? (Choose three.)
goodputfrequency
amplitude
throughputcrosstalk
bandwidth

10.

Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
coax cable
rollover cable
crossover cablestraight-through cable

11. In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?
coax
fiberCat5e UTP
Cat6 UTP
STP

12. Which fiber connector supports full duplex Ethernet?

13. Which method of signal transmission uses radio waves to carry signals?
electrical
optical
wirelessacoustic

14. Which characteristics describe fiber optic cable? (Choose two.)
It is not affected by EMI or RFI.Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding and twisting to protect data.
It has a maximum speed of 100 Mbps.
It is the most expensive type of LAN cabling.

15. Which of the following is a characteristic of single-mode fiber-optic cable?
generally uses LEDs as the light source
relatively larger core with multiple light paths
less expensive than multimode
generally uses lasers as the light source

16. What is considered a benefit of wireless as a media choice?
more host mobilitylower security risks
reduced susceptibility to interference
less impact of the surroundings on the effective coverage area

17. Compared with UTP cable, what extra characteristic of STP cable helps reduce the effects of interference?
the metal braiding in the shielding
the reflective cladding around core
the twisting of the wires in the cable
the insulating material in the outer jacket

18. What is a primary role of the Physical layer in transmitting data on the network?
create the signals that represent the bits in each frame on to the mediaprovide physical addressing to the devices
determine the path packets take through the network
control data access to the media

19. When is a rollover cable used in a network?
for connecting a host to a Fast Ethernet port on a switch
for connecting a router to another router
for connecting two routers through their AUX ports
for connecting to a switch through its console port

20. What is a purpose of the physical layer in data communication?
to wrap data packets into frames
to make sure that MAC addresses are unique in each frame
to control the access sequence of frames to the transmission media
to convert a frame into a series of signals to be transmitted on the local media

21. Which data communications standard provides broadband access in a wireless network?
GSM
Wi-Fi
WiMAX
Bluetooth

22. A customer installs a wireless access point at home in the closet next to the kitchen. The customer mentions that the wireless communication performance seems degraded when the cordless phone or the microwave oven is in use. What is the possible reason for this degradation?
The access point is close to walls.
The cordless phone joins the WLAN and shares the available bandwidth.
The wireless signal is in the same radio frequency range as the household devices are in.
The access point is on the same electrical circuit as the phone base unit and microwave oven are.
The surge of electricity when a microwave oven is in use disrupts the operation of the access point.

23.

Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between router RTA and router RTB?
coax cable
rollover cable
crossover cable
straight-through cable

24. Which OSI layer is responsible for managing optical signals used for data communication?
presentation
data link
transport
physical

25. Which connector is used with twisted-pair cabling in an Ethernet LAN?

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ENetwork Chapter 9 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 9 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?

Host B can transmit immediately since it is connected on its own cable segment.
Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
Host B must send a request signal to Host A by transmitting an interframe gap.
Host B must wait until it is certain that Host A has completed sending its frame.

2. Ethernet operates at which layers of the OSI model? (Choose two.)
Network layer
Transport layer
Physical layer
Application layer
Session layer
Data-link layer

3. Which of the following describe interframe spacing? (Choose two.)
the minimum interval, measured in bit-times, that any station must wait before sending another frame
the maximum interval, measured in bit-times, that any station must wait before sending another frame
the 96-bit payload padding inserted into a frame to achieve a legal frame size
the 96-bit frame padding transmitted between frames to achieve proper synchronization
the time allowed for slow stations to process a frame and prepare for the next frame
the maximum interval within which a station must send another frame to avoid being considered unreachable

4. What three primary functions does data link layer encapsulation provide? (Choose three.)
addressing
error detection
frame delimiting
port identification
path determination
IP address resolution

5. When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
The hosts return to a listen-before-transmit mode.
The hosts creating the collision have priority to send data.
The hosts creating the collision retransmit the last 16 frames.
The hosts extend their delay period to allow for rapid transmission.

6. What are three functions of the upper data link sublayer in the OSI model? (Choose three.)
recognizes streams of bits
identifies the network layer protocol
makes the connection with the upper layers
identifies the source and destination applications
insulates network layer protocols from changes in physical equipment
determines the source of a transmission when multiple devices are transmitting

7. What does the IEEE 802.2 standard represent in Ethernet technologies?
MAC sublayer
Physical layer
Logical Link
Control sublayer
Network layer

8. Why do hosts on an Ethernet segment that experience a collision use a random delay before attempting to transmit a frame?
A random delay is used to ensure a collision-free link.
A random delay value for each device is assigned by the manufacturer.
A standard delay value could not be agreed upon among networking device vendors.
A random delay helps prevent the stations from experiencing another collision during the transmission.

9.

Refer to the exhibit. Which option correctly identifies content that the frame data field may contain?
preamble and stop frame
network layer packet
physical addressing
FCS and SoF

10. Host A has an IP address of 172.16.225.93 and a mask of 255.255.248.0. Host A needs to communicate with a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on the destination address. What two things will occur? (Choose two.)
Host A will change the destination IP to the IP of the nearest router and forward the packet.
Host A will broadcast an ARP request for the MAC of its default gateway.
A result of 172.16.225.0 will be obtained.
Host A will broadcast an ARP request for the MAC of the destination host.
A result of 172.16.224.0 will be obtained.
A result of 172.16.225.255 will be obtained.

11. Which of the following is a drawback of the CSMA/CD access method?
Collisions can decrease network performance.
It is more complex than non-deterministic protocols.
Deterministic media access protocols slow network performance.
CSMA/CD LAN technologies are only available at slower speeds than other LAN technologies.

12. Ethernet operates at which layer of the TCP/IP network model?
application
physical
transport
internet
data link
network access

13. What is the primary purpose of ARP?
translate URLs to IP addresses
resolve IPv4 addresses to MAC addresses
provide dynamic IP configuration to network devices
convert internal private addresses to external public addresses

14.

Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?
No collisions will occur on this link.
Only one of the devices can transmit at a time.
The switch will have priority for transmitting data.
The devices will default back to half duplex if excessive collisions occur.

15.

Refer to the exhibit. Host_A is attempting to contact Server_B. Which statements correctly describe the addressing Host_A will generate in the process? (Choose two.)
A packet with the destination IP of Router_B.
A frame with the destination MAC address of Switch_A.
A packet with the destination IP of Router_A.
A frame with the destination MAC address of Router_A.
A packet with the destination IP of Server_B.
A frame with the destination MAC address of Server_B.

16. Which statements correctly describe MAC addresses? (Choose three.)
dynamically assigned
copied into RAM during system startup
layer 3 address
contains a 3 byte OUI
6 bytes long
32 bits long

17. Which two features make switches preferable to hubs in Ethernet-based networks? (Choose two.)
reduction in cross-talk
minimizing of collisions
support for UTP cabling
division into broadcast domains
increase in the throughput of communications

18. What are the two most commonly used media types in Ethernet networks today? (Choose two.)
coaxial thicknet
copper UTP
coaxial thinnet
optical fiber
shielded twisted pair

19. Convert the binary number 10111010 into its hexadecimal equivalent. Select the correct answer from the list below.
85
90
BA
A1
B3
1C

20. After an Ethernet collision, when the backoff algorithm is invoked, which device has priority to transmit data?
the device involved in the collision with the lowest MAC address
the device involved in the collision with the lowest IP address
any device in the collision domain whose backoff timer expires first
those that began transmitting at the same time

21.

Refer to the exhibit. What command was executed on a host computer to produce the results shown?
route PRINT
arp –a
arp –d
netstat
telnet

22. Host A has an IP address of 172.16.225.93, a mask of 255.255.248.0, and a default gateway of 172.16.224.1. Host A needs to send a packet to a new host whose IP is 172.16.231.78. Host A performs the ANDing operation on its address and subnet mask. What two things will occur? (Choose two.)
Host A will get a result of 172.16.224.0 from the AND process.
Host A will send on to the media a broadcast frame that contains the packet.
Host A will broadcast an ARP request for the MAC of the host 172.16.231.78.
Host A will change the destination IP of the packet to 172.16.224.1 and forward the packet.
Host A will encapsulate the packet in a frame with a destination MAC that is the MAC address associated with 172.16.224.1.

23.

In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?
Host B can transmit immediately since it is connected on its own cable segment.
Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
Host B must send a request signal to Host A by transmitting an interframe gap.
Host B must wait until it is certain that Host A has completed sending its frame.

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ENetwork Chapter 5 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 5 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?

destination network addresssource network address
source MAC address
well known port destination address

2. What information is added during encapsulation at OSI Layer 3?
source and destination MAC
source and destination application protocol
source and destination port number
source and destination IP address

3. In a connectionless system, which of the following is correct?
The destination is contacted before a packet is sent.
The destination is not contacted before a packet is sent.The destination sends an acknowledgement to the source that indicates the packet was received.
The destination sends an acknowledgement to the source that requests the next packet to be sent.

4. Which IP packet field will prevent endless loops?
type-of-service
identification
flags
time-to-liveheader checksum

5. Which portion of the network layer address does a router use to forward packets?
host portion
broadcast address
network portiongateway address

6.

Refer to the exhibit. Using the network in the exhibit, what would be the default gateway address for host A in the 192.133.219.0 network?
192.135.250.1
192.31.7.1
192.133.219.0
192.133.219.1

7. If the default gateway is configured incorrectly on the host, what is the impact on communications?
The host is unable to communicate on the local network.
The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.
There is no impact on communications.

8. What is the purpose of a default gateway?
physically connects a computer to a network
provides a permanent address to a computer
identifies the network to which a computer is connected
identifies the logical address of a networked computer and uniquely identifies it to the rest of the network
identifies the device that allows local network computers to communicate with devices on other networks

9. What type of routing uses information that is manually entered into the routing table?
dynamic
interior
staticstandard

10. When the destination network is not listed in the routing table of a Cisco router, what are two possible actions that the router might take? (Choose two.)
The router sends an ARP request to determine the required next hop address.
The router discards the packet.The router forwards the packet toward the next hop indicated in the ARP table.
The router forwards the packet to the interface indicated by the source address.
The router forwards the packet out the interface indicated by the default route entry.

11. What are the key factors to consider when grouping hosts into a common network? (Choose three.)
gateways
purposephysical addressing
software version
geographic locationownership

12. What is a component of a routing table entry?
the MAC address of the interface of the router
the destination Layer 4 port number
the destination host address
the next-hop address

13. Which intermediary devices could be used to implement security between networks? (Choose two.)
routerhub
switch
firewallaccess point
bridge

14. What are three common problems with a large network? (Choose three.)
too few broadcasts
performance degradationsecurity issueslimited management responsibility
host identificationprotocol compatibility

15.

Refer to the exhibit. All devices shown in the exhibit have factory default settings. How many broadcast domains are represented in the topology that is shown?
3
45
7
8
11

16. Which three statements are true about routes and their use? (Choose three.)
If no route to the destination network is found, the packet is returned to the previous router.
If the destination network is directly connected, the router forwards the packet to the destination host.
If multiple network entries exist for the destination network, the most general route is used to forward the packet.
If no route exists for the destination network and a default route is present, the packet is forwarded to the next-hop router.
If the originating host has a default gateway configured, the packet for a remote network can be forwarded using that route.
If a host does not have a route manually configured for the destination network, the host will drop the packet.

17.

Refer to the exhibit. A network administrator is troubleshooting a connectivity problem and needs to determine the address that is used to forward network packets out the network. Using the netstat -r command, the administrator would identify which address as the address to which all hosts send packets that are destined for an outside network?
10.10.10.26
127.0.0.1
10.10.10.610.10.10.1
224.0.0.0

18.

Refer to the exhibit. A network administrator notices that there are too many broadcasts on the network. What two steps can the network administrator take to resolve this problem? (Choose two.)
Replace S2 with a router.Place all servers on S1.
Disable TCP/IP broadcasts.
Subnet the 192.168.0.0 /24 network.Disable all unused interfaces on the switches.

19.

Refer to the exhibit. The network in the exhibit is fully operational. What two statements correctly describe the routing for the topology that is shown? (Choose two.)
192.168.0.2 is the next-hop address that is used by R3 to route a packet from the 10.0.0.0 network to the 172.16.0.0 network.10.0.0.1 is the next-hop address that is used by R1 to route a packet from the 192.168.12.0 network to the 10.0.0.0 network.
192.168.0.1 is the next-hop address that is used by R1 to route a packet from the 192.168.12.0 network to the 172.16.0.0 network.
172.16.0.1 is the next-hop address that is used by R3 to route a packet from the 10.0.0.0 to the 172.16.0.0 network.
192.168.0.1 is the next-hop address that is used by R2 to route a packet from the 172.16.0.0 network to the 192.168.12.0 network.192.168.0.2 is the next-hop address that is used by R2 to route a packet from the 172.16.0.0 network to the 192.168.12.0 network.

20. What two characteristics are commonly associated with dynamic routing protocols? (Choose two.)
require no device configuration
provide routers with up-to-date routing tablesrequire less processing power than static routes require
consume bandwidth to exchange route informationprevent manual configuration and maintenance of the routing table

21. What statement describes the purpose of a default route?
A host uses a default route to transfer data to another host on the same network segment.
A host uses a default route to forward data to the local switch as the next hop to all destinations.
A host uses a default route to identify the Layer 2 address of an end device on the local network.
A host uses a default route to transfer data to a host outside the local network when no other route to the destination exists.

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ENetwork Chapter 6 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 6 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1. How many bits make up an IPv4 address?

128
64
48
32

2.

Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the 192.168.1.0 /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?
255.255.255.248
255.255.255.224
255.255.255.192255.255.255.240
255.255.255.128
255.255.255.252

3.

Refer to the exhibit. The network administrator has assigned the internetwork of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 mask. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the workgroup server’s properties to allow connectivity to the network?
IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.39
IP address: 192.168.10.38 subnet mask: 255.255.255.240 default gateway: 192.168.10.33
IP address: 192.168.10.38 subnet mask: 255.255.255.248 default gateway: 192.168.10.33IP address: 192.168.10.39 subnet mask: 255.255.255.248 default gateway: 192.168.10.31
IP address: 192.168.10.254 subnet mask: 255.255.255.0 default gateway: 192.168.10.1

4.

Refer to the exhibit. Which network prefix will implement the IP addressing scheme for the LANs shown in the graphic?
/24
/16
/20
/27/25
/28

5.

Refer to the exhibit. A network administrator discovers that host A is having trouble with Internet connectivity, but the server farm has full connectivity. In addition, host A has full connectivity to the server farm. What is a possible cause of this problem?
The router has an incorrect gateway.
Host A has an overlapping network address.
Host A has an incorrect default gateway configured.
Host A has an incorrect subnet mask.
NAT is required for the host A network.

6. What subnet mask would a network administrator assign to a network address of 172.30.1.0 if it were possible to have up to 254 hosts?
255.255.0.0
255.255.255.0255.255.254.0
255.255.248.0

7. Given the IP address and subnet mask of 172.16.134.64 255.255.255.224, which of the following would describe this address?
This is a useable host address.
This is a broadcast address.
This is a network address.This is not a valid address.

8. What three facts are true about the network portion of an IPv4 address? (Choose three.)
identifies an individual device
is identical for all hosts in a broadcast domainis altered as packet is forwarded
varies in lengthis used to forward packetsuses flat addressing

9. What is the network address of the host 172.25.67.99 /23 in binary?
10101100. 00011001.01000011.00000000
10101100. 00011001.01000011.11111111
10101100. 00011001.01000010.0000000010101100. 00011001.01000010.01100011
10101100. 00010001.01000011. 01100010
10101100. 00011001.00000000.00000000

10. A router interface has been assigned an IP address of 172.16.192.166 with a mask of 255.255.255.248. To which subnet does the IP address belong?
172.16.0.0
172.16.192.0
172.16.192.128
172.16.192.160172.16.192.168
172.16.192.176

11.

Refer to the exhibit. Why would the response shown be displayed after issuing the command ping 127.0.0.1 on a PC?
The IP settings are not properly configured on the host.
Internet Protocol is not properly installed on the host.There is a problem at the physical or data link layer.
The default gateway device is not operating.
A router on the path to the destination host has gone down.

12. What two things will happen if a router receives an ICMP packet which has a TTL value of 1 and the destination host is several hops away? (Choose two.)
The router will discard the packet.The router will decrement the TTL value and forward the packet to the next router on the path to the destination host.
The router will send a time exceeded message to the source host.The router will increment the TTL value and forward the packet to the next router on the path to the destination host.
The router will send an ICMP Redirect Message to the source host.

13. Which of the following are features of IPv6? (Choose three.)
larger address spacefaster routing protocols
data types and classes of serviceauthentication and encryptionimproved host naming conventions
same addressing scheme as IPv4

14. Which process do routers use to determine the subnet network address based upon a given IP address and subnet mask?
binary adding
hexadecimal anding
binary division
binary multiplication
binary ANDing

15. What is the primary reason for development of IPv6?
security
header format simplification
expanded addressing capabilitiesaddressing simplification

16. Which three IP addresses are private? (Choose three.)
172.168.33.1
10.35.66.70192.168.99.5172.18.88.90192.33.55.89
172.35.16.5

17. Which statements are true regarding IP addressing? (Choose two.)
NAT translates public addresses to private addresses destined for the Internet.
Only one company is allowed to use a specific private network address space.
Private addresses are blocked from public Internet by router.Network 172.32.0.0 is part of the private address space.
IP address 127.0.0.1 can be used for a host to direct traffic to itself.

18. Which IPv4 subnetted addresses represent valid host addresses? (Choose three.)
172.16.4.127 /26
172.16.4.155 /26172.16.4.193 /26172.16.4.95 /27
172.16.4.159 /27
172.16.4.207 /27

19. What is a group of hosts called that have identical bit patterns in the high order bits of their addresses?
an internet
a networkan octet
a radi

20.

Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?
The host subnet mask is incorrect.
The default gateway is a network address.
The default gateway is a broadcast address.
The default gateway is on a different subnet from the host.

21. Which of the following network devices are recommended to be assigned static IP addresses? (Choose three.)
LAN workstations
serversnetwork printersroutersremote workstations
laptops

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ENetwork Chapter 7 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 7 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1. Which options are properties of contention-based media access for a shared media? (Choose three.)

non-deterministicless overheadone station transmits at a time
collisions existdevices must wait their turn
token passing

2. What is a primary purpose of encapsulating packets into frames?
provide routes across the internetwork
format the data for presentation to the user
facilitate the entry and exit of data on mediaidentify the services to which transported data is associated

3.

Refer to the exhibit. How many unique CRC calculations will take place as traffic routes from the PC to the laptop?
1
2
4
816

4. What is true concerning physical and logical topologies?
The logical topology is always the same as the physical topology.
Physical topologies are concerned with how a network transfers frames.
Physical signal paths are defined by Data Link layer protocols.
Logical topologies consist of virtual connections between nodes.

5.

Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for http://www.server?
00-1c-41-ab-c0-00
00-0c-85-cf-65-c000-0c-85-cf-65-c1
00-12-3f-32-05-af

6. What are three characteristics of valid Ethernet Layer 2 addresses? (Choose three.)
They are 48 binary bits in length.They are considered physical addresses.They are generally represented in hexadecimal format.They consist of four eight-bit octets of binary numbers.
They are used to determine the data path through the network.
They must be changed when an Ethernet device is added or moved within the network.

7.

Refer to the exhibit. A frame is being sent from the PC to the laptop. Which source MAC and IP addresses will be included in the frame as it leaves RouterB? (Choose two.)
source MAC – PC
source MAC – S0/0 on RouterA
source MAC – Fa0/1 on RouterBsource IP – PCsource IP – S0/0 on RouterA
source IP – Fa0/1 of RouterB

8. What determines the method of media access control? (Choose two.)
network layer addressing
media sharingapplication processes
logical topologyintermediary device function

9. What is the purpose of the preamble in an Ethernet frame?
is used as a pad for data
identifies the source address
identifies the destination address
marks the end of timing information
is used for timing synchronization with alternating patterns of ones and zeros

10. What statements are true regarding addresses found at each layer of the OSI model? (Choose two.)
Layer 2 may identify devices by a physical address burned into the network cardLayer 2 identifies the applications that are communicating
Layer 3 represents a hierarchical addressing schemeLayer 4 directs communication to the proper destination network
Layer 4 addresses are used by intermediary devices to forward data

11. Which statements describe the logical token-passing topology? (Choose two.)
Network usage is on a first come, first serve basis.
Computers are allowed to transmit data only when they possess a token.Data from a host is received by all other hosts.
Electronic tokens are passed sequentially to each other.Token passing networks have problems with high collision rates.

12. Which sublayer of the data link layer prepares a signal to be transmitted at the physical layer?
LLC
MACHDLC
NIC

13. What is true regarding media access control? (Choose three.)
Ethernet utilizes CSMA/CDdefined as placement of data frames on the mediacontention-based access is also known as deterministic
802.11 utilizes CSMA/CD
Data Link layer protocols define the rules for access to differen mediacontrolled access contains data collisions

14. What is a characteristic of a logical point-to-point topology?
The nodes are physically connected.
The physical arrangement of the nodes is restricted.
The media access control protocol can be very simple.The data link layer protocol used over the link requires a large frame header.

15. What two facts are true when a device is moved from one network or subnet to another? (Choose two.)
The Layer 2 address must be reassigned.
The default gateway address should not be changed.
The device will still operate at the same Layer 2 address.Applications and services will need additional port numbers assigned.
The Layer 3 address must be reassigned to allow communications to the new network.

16. What is a function of the data link layer?
provides the formatting of data
provides end-to-end delivery of data between hosts
provides delivery of data between two applications
provides for the exchange data over a common local media

17. Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.)
the Layer 3 protocol selected
the geographic scope of the networkthe PDU defined by the transport layer
the physical layer implementationthe number of hosts to be interconnected

18. What is the primary purpose of the trailer in a data link layer frame?
define the logical topology
provide media access control
support frame error detectioncarry routing information for the frame

19. A network administrator has been asked to provide a graphic representation of exactly where the company network wiring and equipment are located in the building. What is this type of drawing?
logical topology
physical topologycable path
wiring grid
access topology

20.

Refer to the exhibit. Which statement describes the media access control methods that are used by the networks in the exhibit?
All three networks use CSMA/CA
None of the networks require media access control.
Network 1 uses CSMA/CD and Network 3 uses CSMA/CA.Network 1 uses CSMA/CA and Network 2 uses CSMA/CD.
Network 2 uses CSMA/CA and Network 3 uses CSMA/CD.

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ENetwork Chapter 4 CCNA 1 4.0 2012 100% Take Assessment – ENetwork Chapter 4 – CCNA Exploration: Network Fundamentals (Version 4.0) – Answers – 2011 – 2012

1.

Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)
The local host is using three client sessions.The local host is using web sessions to a remote server.The local host is listening for TCP connections using public addresses.
The local host is using well-known port numbers to identify the source ports.
The local host is performing the three-way handshake with 192.168.1.101:1037.

2. After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server?
13
53
801024
1728

3. Which information is found in both the TCP and UDP header information?
sequencing
flow control
acknowledgments
source and destination

4. Which is an important characteristic of UDP?
acknowledgement of data delivery
minimal delays in data deliveryhigh reliability of data delivery
same order data delivery

5.

Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?
create a Layer 1 jam signal
reach a timeout and resend the data that needs to be acknowledgedsend a RESET bit to the host
change the window size in the Layer 4 header

6.

Refer to the exhibit. In line 7 of this Wireshark capture, what TCP operation is being performed?
session establishmentsegment retransmit
data transfer
session disconnect

7.

Refer to the exhibit. The initial TCP exchange of data between two hosts is shown in the exhibit. Assuming an initial sequence number of 0, what sequence number will be included in Acknowledgment 2 if Segment 6 is lost?
2
3
6
1850
34313475

8. Why is flow control used for TCP data transfer?
to synchronize equipment speed for sent data
to synchronize and order sequence numbers so data is sent in complete numerical order
to prevent the receiver from being overwhelmed by incoming datato synchronize window size on the server
to simplify data transfer to multiple hosts

9. During a TCP communication session, if the packets arrive to the destination out of order, what will happen to the original message?
The packets will not be delivered.
The packets will be retransmitted from the source.
The packets will be delivered and reassembled at the destination.The packets will be delivered and not reassembled at the destination.

10. With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?
0 to 255
256 to 1022
0 to 10231024 to 2047
49153 to 65535

11. Which transport layer protocol provides low overhead and would be used for applications which do not require reliable data delivery?
TCP
IP
UDPHTTP
DNS

12. What are two features of the User Datagram Protocol (UDP)? (Choose two.)
flow control
low overheadconnectionlessconnection-oriented
sequence and acknowledgements

13. What mechanism is used by TCP to provide flow control as segments travel from source to destination?
sequence numbers
session establishment
window sizeacknowledgments

14. What is dynamically selected by the source host when forwarding data?
destination logical address
source physical address
default gateway address
source port

15. Why are port numbers included in the TCP header of a segment?
to indicate the correct router interface that should be used to forward a segment
to identify which switch ports should receive or forward the segment
to determine which Layer 3 protocol should be used to encapsulate the data
to enable a receiving host to forward the data to the appropriate applicationto allow the receiving host to assemble the packet in the proper order

16. Which two options represent Layer 4 addressing? (Choose two.)
identifies the destination network
identifies source and destination hosts
identifies the communicating applicationsidentifies multiple conversations between the hostsidentifies the devices communicating over the local media

17. Which three features allow TCP to reliably and accurately track the transmission of data from source to destination?
encapsulation
flow controlconnectionless services
session establishmentnumbering and sequencingbest effort delivery

18. Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?
application
presentation
session
transportnetwork

19.

Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)
This is a UDP header.
This contains a Telnet request.This contains a TFTP data transfer.
The return packet from this remote host will have an Acknowledgement Number of 43693.
This is a TCP header.

20. Which event occurs during the transport layer three-way handshake?
The two applications exchange data.
TCP initializes the sequence numbers for the sessions.UDP establishes the maximum number of bytes to be sent.
The server acknowledges the bytes of data received from the client.

21.

Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?
Host1 sends a segment with the ACK flag = 0, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 0 to Host2.
Host1 sends a segment with the ACK flag = 1, SYN flag = 1 to Host2.
Host2 sends a segment with the ACK flag = 0, SYN flag = 1 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 0 to Host1.
Host2 sends a segment with the ACK flag = 1, SYN flag = 1 to Host1.

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