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Hiển thị các bài đăng có nhãn CCNA v5.0 cisco. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn CCNA v5.0 cisco. Hiển thị tất cả bài đăng

CCNA 4 R&S Connecting Networks Chapter 7 v5.0 Exam Answers 2014

Thứ Ba, 15 tháng 4, 2014

CCNA 4 R&S Connecting Networks Chapter 7 v5.0 Exam Answers 2014


1. How is “tunneling” accomplished in a VPN?
New headers from one or more VPN protocols encapsulate the original packets.
All packets between two hosts are assigned to a single physical medium to ensure that the packets are kept private.
Packets are disguised to look like other types of traffic so that they will be ignored by potential attackers.
A dedicated circuit is established between the source and destination devices for the duration of the connection.
2. Which two scenarios are examples of remote access VPNs? (Choose two.)
A toy manufacturer has a permanent VPN connection to one of its parts suppliers.
All users at a large branch office can access company resources through a single VPN connection.
A mobile sales agent is connecting to the company network via the Internet connection at a hotel.
A small branch office with three employees has a Cisco ASA that is used to create a VPN connection to the HQ.
An employee who is working from home uses VPN client software on a laptop in order to connect to the company network.
3.

Refer to the exhibit. Which IP address would be configured on the tunnel interface of the destination router?
172.16.1.1
172.16.1.2
209.165.200.225
209.165.200.226
4. Which statement correctly describes IPsec?
IPsec works at Layer 3, but can protect traffic from Layer 4 through Layer 7.
IPsec uses algorithms that were developed specifically for that protocol.
IPsec implements its own method of authentication.
IPsec is a Cisco proprietary standard.
5. What is an IPsec protocol that provides data confidentiality and authentication for IP packets?
AH
ESP
RSA
IKE
6. Which three statements describe the building blocks that make up the IPsec protocol framework? (Choose three.)
IPsec uses encryption algorithms and keys to provide secure transfer of data.
IPsec uses Diffie-Hellman algorithms to encrypt data that is transferred through the VPN.
IPsec uses 3DES algorithms to provide the highest level of security for data that is transferred through a VPN.
IPsec uses secret key cryptography to encrypt messages that are sent through a VPN.
IPsec uses Diffie-Hellman as a hash algorithm to ensure integrity of data that is transmitted through a VPN.
IPsec uses ESP to provide confidential transfer of data by encrypting IP packets.
7. What key question would help determine whether an organization should use an SSL VPN or an IPsec VPN for the remote access solution of the organization?
Is a Cisco router used at the destination of the remote access tunnel?
What applications or network resources do the users need for access?
Are both encryption and authentication required?
Do users need to be able to connect without requiring special VPN software?
8. What is the purpose of a message hash in a VPN connection?
It ensures that the data cannot be duplicated and replayed to the destination.
It ensures that the data is coming from the correct source.
It ensures that the data has not changed while in transit.
It ensures that the data cannot be read in plain text.
9. A network design engineer is planning the implementation of a cost-effective method to interconnect multiple networks securely over the Internet. Which type of technology is required?
a dedicated ISP
a VPN gateway
a leased line
a GRE IP tunnel
10. What is one benefit of using VPNs for remote access?
lower protocol overhead
potential for reduced connectivity costs 
increased quality of service
ease of troubleshooting
11. Which statement describes a characteristic of IPsec VPNs?
IPsec can secure traffic at Layers 1 through 3.
IPsec works with all Layer 2 protocols.
IPsec encryption causes problems with routing.
IPsec is a framework of Cisco proprietary protocols
12. What is the purpose of the generic routing encapsulation tunneling protocol?
to support basic unencrypted IP tunneling using multivendor routers between remote sites
to provide fixed flow-control mechanisms with IP tunneling between remote sites
to manage the transportation of IP multicast and multiprotocol traffic between remote sites
to provide packet level encryption of IP traffic between remote sites
13. Which algorithm is an asymmetrical key cryptosystem?
3DES
DES
AES
RSA
14. A network design engineer is planning the implementation of an IPsec VPN. Which hashing algorithm would provide the strongest level of message integrity?
512-bit SHA
AES
SHA-1
MD5
15. What two encryption algorithms are used in IPsec VPNs? (Choose two.)
IKE
DH
PSK
3DES
AES
16. Which statement describes a feature of site-to-site VPNs?
Internal hosts send normal, unencapsulated packets.
VPN client software is installed on each host.
The VPN connection is not statically defined.
Individual hosts can enable and disable the VPN connection.
17. Which Cisco VPN solution provides limited access to internal network resources by utilizing a Cisco ASA and provides browser-based access only?
clientless SSL VPN 
IPsec
SSL
client-based SSL VPN
18. Which two algorithms use Hash-based Message Authentication Code for message authentication? (Choose two.)
AES
DES
3DES
MD5
SHA
19. Which function of IPsec security services allows the receiver to verify that the data was transmitted without being changed or altered in any way?
confidentiality
anti-replay protection
data integrity
authentication
20.

Open the PT Activity. Perform the tasks in the activity instructions and then answer the question. What problem is preventing the hosts from communicating across the VPN tunnel?
The EIGRP configuration is incorrect.
The tunnel destinations addresses are incorrect.
The tunnel IP addresses are incorrect.
The tunnel source interfaces are incorrect
21. What is the purpose of utilizing Diffie-Hellman (DH) algorithms as part of the IPsec standard?
DH algorithms allow unlimited parties to establish a shared public key that is used by encryption and hash algorithms.
DH algorithms allow two parties to establish a shared public key that is used by encryption and hash algorithms.
DH algorithms allow two parties to establish a shared secret key that is used by encryption and hash algorithms.
DH algorithms allow unlimited parties to establish a shared secret key that is used by encryption and hash algorithms.
22.
Refer to the exhibit. A tunnel was implemented between routers R1 and R2. Which two conclusions can be drawn from the R1 command output? (Choose two.)
The data that is sent across this tunnel is not secure.
This tunnel mode provides encryption.
This tunnel mode does not support IP multicast tunneling.
A GRE tunnel is being used. 
This tunnel mode is not the default tunnel interface mode for Cisco IOS software.
23. Two corporations have just completed a merger. The network engineer has been asked to connect the two corporate networks without the expense of leased lines. Which solution would be the most cost effective method of providing a proper and secure connection between the two corporate networks?
Cisco AnyConnect Secure Mobility Client with SSL
Frame Relay
remote access VPN using IPsec
Cisco Secure Mobility Clientless SSL VPN
site-to-site VPN
24. Which remote access implementation scenario will support the use of generic routing encapsulation tunneling?
a mobile user who connects to a SOHO site
a central site that connects to a SOHO site without encryption 
a branch office that connects securely to a central site
a mobile user who connects to a router at a central site
Read more ...

CCNA 4 R&S Connecting Networks Chapter 6 v5.0 Exam Answers 2014

Thứ Ba, 15 tháng 4, 2014

CCNA 4 R&S Connecting Networks Chapter 6 v5.0 Exam Answers 2014


1. What are two Layer 2 WAN technologies that can provide secure remote connections between corporate branch offices? (Choose two.)
LTE
Frame Relay
leased lines
QoS
IPsec
2. Which two OSI Layer 1 specifications does DOCSIS define for a cable Internet connection? (Choose two.)
a deterministic media access method
channel bandwidth
modulation technique
VPN tunneling requirements
the separation of the voice and data transmissions
3. Which medium is used for delivering data via DSL technology through PSTN?
fiber
copper
radifrequency
wireless
4. A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?
satellite
DSL
WiMax
cable
5. What are twcharacteristics of a PPPoE configuration on a Cisccustomer router? (Choose two.)
The PPP configuration is on the dialer interface.
An MTU size of 1492 bytes is configured on the Ethernet interface.
The Ethernet interface does not have an IP address.
The customer router CHAP username and password are independent of what is configured on the ISP router.
The dialer pool command is applied tthe Ethernet interface tlink it tthe dialer interface.
6. Fill in the blank.
DOCSIS specifies the  ”MAC“  sub-layer as a Layer 2 requirement that defines either a deterministic access method, TDMA, or S-CDMA.
7. Fill in the blank. Use only an acronym.
PPPoE”   creates a PPP tunnel through the DSL connection for the purpose of sending PPP frames.
8. What functionality is required on routers tprovide remote workers with VoIP and videoconferencing capabilities?
PPPoE
QoS
VPN
IPsec
9. Which broadband wireless technology is based on the 802.11 standard?
CDMA
municipal Wi-Fi
UMTS
WiMAX
10. Why is the MTU for a PPPoE DSL configuration reduced from 1500 bytes t1492?
to enable CHAP authentication
to accommodate the PPPoE headers
to reduce congestion on the DSL link
to establish a secure tunnel with less overhead
11. Which standard specifies the channel frequencies and the deterministic access method of cable networks?
DOCSIS
802.16
LTE
WIMAX
12. Which two network components does a teleworker require to connect remotely and securely from home to the corporate network? (Choose two.)
VPN client software or VPN-enabled router
broadband Internet connection
VPN server or concentrator
authentication server
multifunction security appliance
13. In which layer of the TCP/IP protocol model does IPsec apply security to network data?
application
transport
internet
network
access
14. Which cable network communication technology is secure, extremely resistant to noise, and employs spread-spectrum technology?
CDMA
S-CDMA
FDMA
TDMA
15. How is voice traffic affected when the customer uses ADSL technology?
No special equipment is needed to separate voice and data signals.
Voice traffic is interrupted if the ADSL service fails.
Voice signals are on a separate wire pair from ADSL signals.
ADSL signals can distortvoice transmissions.
16. Which technology provides a secure connection between a SOHO and the headquarters office?
PPPoE
QoS
WiMax
VPN
17. What are two characteristics of a PPPoE configuration on a Cisco customer router? (Choose two.)
The customer router CHAP username and password are independent of what is configured on the ISP router.
The PPP configuration is on the dialer interface.
An MTU size of 1492 bytes is configured on the Ethernet interface.
The Ethernet interface does not have an IP address.
The dialer pool command is applied to the Ethernet interface to link it to the dialer interface.
18. What advantage does DSL have compared to cable technology?
DSL upload and download speeds are always the same.
DSL is not a shared medium.
DSL is faster.
DSL has no distance limitations.
19. What are two disadvantages of employing teleworkers in an organization? (Choose two.)
slower customer service response times
increased usage of sick or vacation days
increased difficulty of tracking task progress
increase in office expenses
the need to implement a new management style
20. 
Place the options in the following order: 
WiMax 
Cellular/Mobile 
Satellite 
– not scored -

21. Which DSL technology provides higher downstream bandwidth to the user than upstream bandwidth?
SDSL
TDMA
CDMA
ADSL
22. Which networking technology will ensure reliable and secure remote access when a teleworker connects to a corporate network?
an encrypted VPN tunnel 
routers with QoS capability
broadband (cable or DSL) access to the corporate network
a VoIP and videoconferencing capable connection
23. Which broadband technology would be best for a user that needs remote access when traveling in mountains and at sea?
satellite 
Wi-Fi Mesh
mobile broadband
WiMax
24. Which type of long distance telecommunication technology provides point-to-point connections and cellular access?
WiMax
satellite
mobile broadband
municipal Wi-Fi
25. What functionality is required on routers to provide remote workers with VoIP and videoconferencing capabilities?
QoS
VPN
PPPoE
IPsec
26
A company is looking for the least expensive broadband solution that provides at least 10 Mb/s download speed. The company is located 5 miles from the nearest provider. Which broadband solution would be appropriate?
satellite
DSL
WiMax
cable
Read more ...

CCNA 4 R&S Connecting Networks Chapter 5 v5.0 Exam Answers 2014

Thứ Ba, 15 tháng 4, 2014

CCNA 4 R&S Connecting Networks Chapter 5 v5.0 Exam Answers 2014

1 Typically, which network device would be used to perform NAT for a corporate environment?
DHCP server
host device
router
server
switch
2 What is the group of public IPv4 addresses used on a NAT-enabled router known as?
outside local addresses
inside local addresses
inside global addresses
outside global addresses
3 When NAT is employed in a small office, which address type is typically used for hosts on the local LAN?
private IP addresses
global public IP addresses
Internet-routable addresses
both private and public IP addresses
4 Which version of NAT allows many hosts inside a private network to simultaneously use a single inside global address for connecting to the Internet?
PAT
static NAT
dynamic NAT
port forwarding
5 Which type of NAT maps a single inside local address to a single inside global address?
dynamic
static
port address translation
overloading
6 Several key servers in an organization must be directly accessible from the Internet. What addressing policy should be implemented for these servers?
Use dynamic NAT to provide addresses for the servers.
Place all of the servers in their own Class C private subnet.
Use DHCP to assign addresses from the pool of Class B addresses.
Assign static internal addresses and public external addresses to each of the servers
7 What is a disadvantage of NAT?
There is no end-to-end addressing.
The router does not need to alter the checksum of the IPv4 packets.
The internal hosts have to use a single public IPv4 address for external communication.
The costs of readdressing hosts can be significant for a publicly addressed network.
8

Refer to the exhibit. What has to be done in order to complete the static NAT configuration on R1?
R1 should be configured with the command ip nat inside source static 209.165.200.1 192.168.11.11.
R1 should be configured with the command ip nat inside source static 209.165.200.200 192.168.11.11.
Interface S0/0/0 should be configured with the command ip nat outside.
Interface Fa0/0 should be configured with the command no ip nat inside.
9
Refer to the exhibit. R1 is configured for NAT as displayed. What is wrong with the configuration?
Access-list 1 is misconfigured.
NAT-POOL2 is not bound to ACL 1.
Interface Fa0/0 should be identified as an outside NAT interface.
The NAT pool is incorrect.
10 Which statement accurately describes dynamic NAT?
It always maps a private IP address to a public IP address.
It provides an automated mapping of inside local to inside global IP addresses.
It provides a mapping of internal host names to IP addresses.
It dynamically provides IP addressing to internal hosts.
11 A network administrator configures the border router with the command R1(config)# ip nat inside source list 4 pool corp. What is required to be configured in order for this particular command to be functional?
a NAT pool named corp that defines the starting and ending public IP addresses
an access list named corp that defines the private addresses that are affected by NAT
an access list numbered 4 that defines the starting and ending public IP addresses
ip nat outside to be enabled on the interface that connects to the LAN affected by the NAT
a VLAN named corp to be enabled and active and routed by R1
12 When dynamic NAT without overloading is being used, what happens if seven users attempt to access a public server on the Internet when only six addresses are available in the NAT pool?
No users can access the server.
The request to the server for the seventh user fails.
All users can access the server.
The first user gets disconnected when the seventh user makes the request.
13 A network engineer has configured a router with the command ip nat inside source list 4 pool corp overload. Why did the engineer use the overload option?
The company has more private IP addresses than available public IP addresses.
The company needs to have more public IP addresses available to be used on the Internet.
The company router must throttle or buffer traffic because the processing power of the router is not enough to handle the normal load of external-bound Internet traffic.
The company has a small number of servers that should be accessible by clients from the Internet.
14
Refer to the exhibit. What will be the effect of entering the command that is shown in the exhibit on R2 as part of the dynamic NAT configuration?
It will define a pool of addresses for translation.
It will identify an inside NAT interface.
It will bind NAT-POOL1 with ACL 1.
It will define the source ACL for the external interface.
15 Which configuration would be appropriate for a small business that has the public IP address of 209.165.200.225/30 assigned to the external interface on the router that connects to the Internet?
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat inside source list 1 interface serial 0/0/0 overload
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload
access-list 1 permit 10.0.0.0 0.255.255.255
ip nat pool comp 192.0.2.1 192.0.2.8 netmask 255.255.255.240
ip nat inside source list 1 pool comp overload
ip nat inside source static 10.0.0.5 209.165.200.225
16 What are two required steps to configure PAT? (Choose two.)
Define a pool of global addresses to be used for overload translation.
Define a standard access list denying the addresses that should be translated.
Define the range of ports to be used.
Identify the inside interface.
Define a standard access list that allow the outside global addresses to be used.
17
Refer to the exhibit. What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco broadband router?
defines which addresses can be translated
defines which addresses are allowed into the router
defines which addresses are assigned to a NAT pool
defines which addresses are allowed out of the router
18 What is the purpose of port forwarding?
Port forwarding allows an external user to reach a service on a private IPv4 address that is located inside a LAN.
Port forwarding allows users to reach servers on the Internet that are not using standard port numbers.
Port forwarding allows an internal user to reach a service on a public IPv4 address that is located outside a LAN.
Port forwarding allows for translating inside local IP addresses to outside local addresses.
19 What is a characteristic of unique local addresses?
They allow sites to be combined without creating any address conflicts.
They are designed to improve the security of IPv6 networks.
Their implementation depends on ISPs providing the service.
They are defined in RFC 3927.
20
Refer to the exhibit. Based on the output that is shown, what type of NAT has been implemented?
dynamic NAT with a pool of two public IP addresses
PAT using an external interface
static NAT with one entry
static NAT with a NAT pool
21
Refer to the exhibit. The NAT configuration applied to the router is as follows:
ERtr(config)# access-list 1 permit 10.0.0.0 0.255.255.255
ERtr(config)# ip nat pool corp 209.165.201.6 209.165.201.30 netmask 255.255.255.224
ERtr(config)# ip nat inside source list 1 pool corp overload
ERtr(config)# ip nat inside source static 10.10.10.55 209.165.201.4
ERtr(config)# interface gigabitethernet 0/0
ERtr(config-if)# ip nat inside
ERtr(config-if)# interface serial 0/0/0
ERtr(config-if)# ip nat outside
Based on the configuration and the output shown, what can be determined about the NAT status within the organization?
Dynamic NAT is working, but static NAT is not.
Static NAT is working, but dynamic NAT is not.
NAT is working.
Not enough information is given to determine if both static and dynamic NAT are working. *
22 Based on the configuration and the output shown, what can be determined about the NAT status within the organization?
NAT is working.
Static NAT is working, but dynamic NAT is not.
Dynamic NAT is working, but static NAT is not.
Not enough information is given to determine if both static and dynamic NAT are working.
23
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What problem is causing PC-A to be unable to communicate with the Internet?
The static route should not reference the interface, but the outside address instead.
This router should be configured to use static NAT instead of PAT.
The ip nat inside source command refers to the wrong interface.
The access list used in the NAT process is referencing the wrong subnet.
The NAT interfaces are not correctly assigned.
24
Place the options in the following order: 
– not scored – 
step 5 
step 2 
step 4 
step 1 
step 3
25 
What are two of the required steps to configure PAT? (Choose two.)
Create a standard access list to define applications that should be translated.
Identify the inside interface.*
Define the range of source ports to be used.
Define the hello and interval timers to match the adjacent neighbor router.
Define a pool of global addresses to be used for overload translation.*
Read more ...

CCNA 4 R&S Connecting Networks Chapter 4 v5.0 Exam Answers 2014

Thứ Ba, 15 tháng 4, 2014

CCNA 4 R&S Connecting Networks Chapter 4 v5.0 Exam Answers 2014

1.
What is a characteristic of Frame Relay that provides more flexibility than a dedicated line?
Customers use dedicated circuits in increments of 64 kb/s.
Dedicated physical circuits are installed between each site.
The Frame Relay cloud allocates as much bandwidth as required to active PVCs to maintain the connection.
One router WAN port can be used to connect to multiple destinations.
2
What are the two major criteria that constitute the cost of a Frame Relay circuit? (Choose two.)
QoS
end-to-end connectivity
local loop
required bandwidth
circuit management fees
3
A router interface connects to a Frame Relay network over a preconfigured logical circuit that does not have a direct electrical connection from end to end. Which type of circuit is being used?
SVC
hub and spoke
full mesh
dedicated leased line
PVC
4
Which Frame Relay topology provides a connection from every site to every other site and maintains a high amount of reliability?
hub and spoke
partial mesh
full mesh
star
5
Which technology allows a Layer 3 IPv4 address to be dynamically obtained from a Layer 2 DLCI?
Neighbor Discovery
Address Resolution Protocol
Inverse Neighbor Discovery
Inverse Address Resolution Protocol
6
A network administrator has statically configured the LMI type on the interface of a Cisco router that is running Cisco IOS Release 11.2. If the service provider modifies its own LMI type in the future, what step must the network administrator take?
The network administrator must modify the keepalive time interval to maintain connectivity with the LMI type of the service provider.
The network administrator does not have to do anything, because all LMI types are compatible with one another.
The network administrator must statically set the LMI type to be compatible with the service provider.
The network administrator simply has to verify connectivity with the provider, because the router has an LMI autosensing feature that automatically detects the LMI type.
7
Which two functions are provided by the Local Management Interface (LMI) that is used in Frame Relay networks? (Choose two.)
mapping of DLCIs to network addresses
error notification
congestion notification
simple flow control
exchange of information about the status of virtual circuits
8
Which parameter would be specified in a Frame Relay provider contract for a particular company?
DE
QoS
Inverse ARP enabled/disabled
CIR
9
Which three notification mechanisms are used when congestion is present in a Frame Relay network? (Choose three.)
DE
BECN
inverse ARP
CIR
FECN
DLCI
10
Why would a customer request a Frame Relay circuit with a CIR of zero?
to have a circuit used for network management traffic
to have a backup circuit for critical data transmissions
to have better QoS
to have a link with reduced costs
to have a circuit used for voice traffic
11
Which provider-negotiated parameter would allow a customer to send data above the rate of the bandwidth specified by the CIR?
DE
FECN
Be
Bc
12
What is the purpose of applying the command frame-relay map ip 10.10.1.2 110 broadcast?​
to support IPv6 traffic over the NBMA network by using DLCI 110
to allow Frame Relay frames to be broadcast over DLCI 110​
to allow Frame Relay frames to be broadcast toward host 10.10.1.2
to allow Frame Relay frames to be broadcast on all Frame Relay interfaces
to configure a device with a static Frame Relay map that also allows the forwarding of routing updates
13
Refer to the exhibit. Which two statements are correct? (Choose two.)
The IPv4 address of interface S0/1/0 on RA is 192.168.1.2.
The IPv4 address of interface S0/1/1 on RB is 192.168.1.2.
The DLCI that is attached to the VC on RA to RB is 62.
The DLCI that is attached to the VC on RB to RA is 62.
The Frame Relay map was set by using the command frame-relay map.
14

Refer to the exhibit. Which statement is true about Frame Relay traffic on R1?
Traffic that exits subinterface Serial 0/0/0.102 is marked with DLCI 201.
Traffic on Serial 0/0/0 is experiencing congestion between R1 and the Frame Switch.
Traffic that is mapped to DLCI 201 will exit subinterface Serial 0/0/0.201.
Frames that enter router R1 from a Frame Relay neighbor will have DLCI 201 in the frame header.
15
Which three actions can be taken to solve Layer 3 routing protocol router reachability issues when using Frame Relay? (Choose three.)
Use subinterfaces.
Disable Inverse ARP.
Use a full mesh topology.
Use the keyword cisco as the LMI type.
Disable split horizon.
Configure static DLCI mappings.
16
When would the multipoint keyword be used in Frame Relay PVCs configuration?
when multicasts must be supported
when using physical interfaces
when participating routers are in the same subnet
when global DLCIs are in use
17
A network engineer has issued the interface serial 0/0/1.102 point-to-point command on a router that will be communicating with another router over a Frame Relay virtual circuit that is identified by the DLCI 102. Which two commands would be appropriate for the network engineer to issue next? (Choose two.)
no shutdown
no ip address
encapsulation frame relay
ip address 10.1.1.10 255.255.255.252
frame-relay interface-dlci 102
18
Which two Frame Relay router reachability issues are resolved by configuring logical subinterfaces? (Choose two.)
LMI status inquiry messages sent to the network are not received.
Inverse ARP fails to associate all IP addresses to the correct DLCIs.
Frame Relay is unable to map a remote IP address to a DLCI.
Distance vector routing protocols are unable to forward routing updates back out the incoming interface to other remote routers.
Link-state routing protocols are unable to complete neighbor discovery.
19

Refer to the exhibit. A network administrator has implemented the show interfaces serial 0/1/0 command. What can be verified from the displayed output?
Router R1 connects to multiple sites through the serial 0/1/0 interface.
Router R1 is forwarding traffic on interface serial 0/1/0 using the local DLCI 1023.
Router R1 is not using the default LMI type.​
Router R1 has been configured with Frame Relay via the ietf keyword.
20
The show frame-relay pvc command is best utilized to display the number for which type of packets that are received by the router?
FECN and BECN messages
Inverse Neighbor Discovery messages
Inverse ARP messages
LMI status messages
21

Refer to the exhibit. A network administrator is configuring Frame Relay subinterfaces on R1. A distance vector routing protocol has also been configured. Data is routing successfully from R1 to networks that are connected to R2, R3, and R4, but routing updates between R2 and R3 are failing. What is the possible cause of this failure?
Split horizon is preventing successful routing table updates on the multipoint link.
Multipoint Frame Relay networks cannot be used with this IP addressing scheme.
Subinterfaces cannot be used on multipoint Frame Relay links.
Two DLCI identifiers cannot be configured on one subinterface.
22
Refer to the exhibit. A network administrator issues the show frame-relay map command to troubleshoot the Frame Relay connection problem. Based on the output, what is the possible cause of the problem?
The S0/0/1 interface of the R2 router is down.
The IP address on S0/0/1 of R3 is configured incorrectly.
Inverse ARP is providing false information to the R1 router.
The S0/0/1 interface of the R2 router has been configured with the encapsulation frame relay ietfcommand.
The Frame Relay map statement on the R3 router for the PVC to R2 is configured with an incorrect DLCI number.
23
Fill in the blank. Use an acronym.
The Frame Relay     “DLCI”      identifies a connection from one endpoint to a remote destination.
24
Fill in the blank.
The   encapsulation frame-relay    “ietf”        command enables Frame Relay encapsulation and allows connection to a device from a different vendor.
25 
Place the options in the following order: 
[+] customers pay for an end-to-end connection 
[+] customers do not share the line 
[+] requires more equipment to purchase and maintain 
[+] used in one-to-one network link only
[#] used in one-to-many networks 
[#] uses virtual circuits 
[#] customers share bandwidth
[+] Order does not matter within this group.
[#] Order does not matter within this group.
Read more ...

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