CCNA 2 v5.0 Routing Protocols Chapter 3

CCNA 2 v5.0 Routing Protocols Chapter 3

1 Which two statements are true regarding classless routing protocols? (Choose two.)
allows for use of both 192.168.1.0/30 and 192.168.1.16/28 subnets in the same topology*
is supported by RIP version 1
sends subnet mask information in routing updates*
sends complete routing table update to all neighbors
reduces the amount of address space available in an organization

2

Refer to the exhibit. OSPF is used in the network. Which path will be chosen by OSPF to send data packets from Net A to Net B?
R1, R4, R6, R7
R1, R3, R6, R7
R1, R3, R5, R6, R7
R1, R2, R5, R7
R1, R3, R5, R7* 

3

Refer to the exhibit. Based on the partial output from the show ip route command, what two facts can be determined about the RIP routing protocol? (Choose two.)
RIP version 1 is running on this router and its RIP neighbor.
RIP version 2 is running on this router and its RIP neighbor.*
The command no auto-summary has been used on the RIP neighbor router.*
RIP will advertise two networks to its neighbor.
The metric to the network 172.16.0.0 is 120.

4
Which two statements describe the OSPF routing protocol? (Choose two.)
automatically summarizes networks at the classful boundaries
used primarily as an EGP
uses Dijkstra’s algorithm to build the SPF tree*
has an administrative distance of 100
calculates its metric using bandwidth*

5 What is the purpose of the passive-interface command?
allows a router to send routing updates on an interface but not receive updates via that innterface
allows interfaces to share IP addresses
allows a router to receive routing updates on an interface but not send updates via that interface*
allows an interface to remain up without receiving keepalives
allows a routing protocol to forward updates out an interface that is missing its IP address

6 In the context of routing protocols, what is a definition for time to convergence?
a measure of protocol configuration complexity
the capability to transport data, video, and voice over the same media
the amount of time for the routing tables to achieve a consistent state after a topology change*
the amount of time a network administrator needs to configure a routing protocol in a small- to medium-sized network

7 Which two events will trigger the sending of a link-state packet by a link-state routing protocol? (Choose two.)
the requirement to periodically flood link-state packets to all neighbors
a change in the topology*
the initial startup of the routing protocol process*
the router update timer expiring
a link to a neighbor router has become congested

8 Fill in the blank. Do not abbreviate the answer.
The command ”version 2” is used in RIP router configuration mode to enable the sending of subnet masks with the routing updates.

9 What two actions result from entering the network 192.168.1.0 command in RIP configuration mode on a router? (Choose two.)
The routing table is created in the RAM of the router.
The RIP process is stopped and all existing RIP configurations are erased.
The neighboring routers are sent a request for routing updates.
Routing updates are sent through all the interfaces belonging to 192.168.1.0.*
The network address 192.168.1.0 is advertised to the neighbor routers.*

10 What two tasks do dynamic routing protocols perform? (Choose two.)
network discovery*
discover hosts
propagate host default gateways
assign IP addressing
update and maintain routing tables*

11

12

13

Refer to the exhibit. Which interface will be the exit interface to forward a data packet with the destination IP address 172.16.0.66?
Serial0/0/0
Serial0/0/1*
GigabitEthernet0/0
GigabitEthernet0/1

14 Which route is the best match for a packet entering a router with a destination address of 10.16.0.2?
S 10.0.0.0/16 is directly connected, Ethernet 0/0
S 10.16.0.0/16 is directly connected, Ethernet 0/1
S 10.16.0.0/24 [1/0] via 192.168.0.9*
S 10.0.0.0/8 [1/0] via 192.168.0.2

15

16 Fill in the blank. Do not abbreviate.
When configuring RIPng, the “default-information originate” command instructs the router to propagate a static default route.

17 What is different between IPv6 routing table entries compared to IPv4 routing table entries?
IPv6 does not use static routes to populate the routing table as used in IPv4.
The selection of IPv6 routes is based on the shortest matching prefix, unlike IPv4 route selection which is based on the longest matching prefix.
IPv6 routing tables include local route entries which IPv4 routing tables do not.
By design IPv6 is classless so all routes are effectively level 1 ultimate routes.*

18 Which two requirements are necessary before a router configured with a link-state routing protocol can build and send its link-state packets? (Choose two.)
The router has constructed an SPF tree.
The router has built its link-state database.
The router has established its adjacencies.*
The router has determined the costs associated with its active links.*
The routing table has been refreshed.

19 Which dynamic routing protocol was developed as an exterior gateway protocol to interconnect different Internet providers?
OSPF
EIGRP
RIP
BGP*

20 Which two requirements are used to determine if a route can be considered as an ultimate route in a router’s routing table? (Choose two.)
contain subnets
contain a next-hop IP address*
contain an exit interface*
be a default route
be a classful network entry

21 A destination route in the routing table is indicated with a code D. Which kind of route entry is this?
a route dynamically learned through the EIGRP routing protocol*
a network directly connected to a router interface
a route used as the default gateway
a static route

22 Which route will a router use to forward an IPv4 packet after examining its routing table for the best match with the destination address?
a level 1 ultimate route*
a level 2 supernet route
a level 1 parent route
a level 1 child route

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CCNA 2 v5.0 Routing Protocols Chapter 2

CCNA 2 v5.0 Routing Protocols Chapter 2

1
The output of the show ip route command contains the following entry:

S 10.2.0.0 [1/0] via 172.16.2.2.
What value is indicated by the 1 in the [1/0] portion of the output?

administrative distance*
number of hops
metric
interface ID through which the network can be reached

2
Refer to the graphic. Which command would be used on router A to configure a static route to direct traffic from LAN A that is destined for LAN C?

A(config)# ip route 192.168.4.0 255.255.255.0 192.168.5.2
A(config)# ip route 192.168.4.0 255.255.255.0 192.168.3.2*
A(config)# ip route 192.168.5.0 255.255.255.0 192.168.3.2
A(config)# ip route 192.168.3.0 255.255.255.0 192.168.3.1
A(config)# ip route 192.168.3.2 255.255.255.0 192.168.4.0

3
Refer to the exhibit. What two commands will change the next-hop address for the 10.0.0.0/8 network from 172.16.40.2 to 192.168.1.2? (Choose two.)

A(config)# no ip route 10.0.0.0 255.0.0.0 172.16.40.2*
A(config)# no ip address 10.0.0.1 255.0.0.0 172.16.40.2
A(config)# ip route 10.0.0.0 255.0.0.0 192.168.1.2*
A(config)# no network 10.0.0.0 255.0.0.0 172.16.40.2
A(config)# ip route 10.0.0.0 255.0.0.0 s0/0/0

4
What type of route allows a router to forward packets even though its routing table contains no specific route to the destination network?

generic route
dynamic route
destination route
default route*

5
Open the PT activity. Perform the tasks in the activity instructions and then answer the question. What is the name of the web server that is displayed in the webpage?

Main-Webserver
WWW-Server
Webserver10*
MNSRV

6
What is a valid summary route for IPv6 networks 2001:0DB8:ACAD:4::/64, 2001:0DB8:ACAD:5::/64, 2001:0DB8:ACAD:6::/64, and 2001:0DB8:ACAD:7::/64?

2001:0DB8:ACAD:0000::/63
2001:0DB8:ACAD:0000::/64
2001:0DB8:ACAD:0004::/62*
2001:0DB8:ACAD:0004::/63

7
What would be the best summary route for the following networks?

10.50.168.0/23
10.50.170.0/23
10.50.172.0/23
10.50.174.0/24
10.50.160.0/22
10.50.164.0/23
10.50.168.0/16
10.50.168.0/21*
10.50.168.0/22
10.50.168.0/23

8
What happens to a static route entry in a routing table when the outgoing interface is not available?

The route is removed from the table.*
The route remains in the table because it was defined as static.
The router polls neighbors for a replacement route.
The router redirects the static route to compensate for the loss of the next hop device.

9
Which type of static route that is configured on a router uses only the exit interface?

recursive static route
default static route
directly connected static route*
fully specified static route

10
What does VLSM allow a network administrator to do?

utilize one dynamic routing protocol throughout the entire network
utilize one subnet mask throughout a hierarchical network
utilize multiple different subnet masks in the same IP address space*
utilize multiple routing protocols within an autonomous system
utilize one public IP address to translate multiple private addresses

11
Which two statements describe classful IP addresses? (Choose two.)

It is possible to determine which class an address belongs to by reading the first bit.
Only Class A addresses can be represented by high-order bits 100.
Up to 24 bits can make up the host portion of a Class C address.
The number of bits used to identify the hosts is fixed by the class of the network.*
All subnets in a network are the same size.*
Three of the five classes of addresses are reserved for multicasts and experimental use.

12
The network administrator configures the router with the ip route 172.16.1.0 255.255.255.0 172.16.2.2 command. How will this route appear in the routing table?

C 172.16.1.0 is directly connected, Serial0/0
S 172.16.1.0 [1/0] via 172.16.2.2*
C 172.16.1.0 [1/0] via 172.16.2.2
S 172.16.1.0 is directly connected, Serial0/0

13
Why would a floating static route be configured with an administrative distance that is higher than the administrative distance of a dynamic routing protocol that is running on the same router?

to be used as a backup route*
to load-balance the traffic
to act as a gateway of last resort
to be the priority route in the routing table

14
Refer to the exhibit. Which is the best way for PC A and PC B to successfully communicate with sites on the Internet?

Configure a static route from R1 to ISP and a dynamic route from ISP to R1.
Configure a default route from R1 to ISP and a static route from ISP to R1.*
Configure a routing protocol between R1 and ISP and advertise all the routes.
Configure a dynamic route from R1 to ISP and a static route from ISP to R1.

15
Refer to the exhibit. The network engineer for the company that is shown wants to use the primary ISP connection for all external connectivity. The backup ISP connection is used only if the primary ISP connection fails. Which set of commands would accomplish this goal?

ip route 0.0.0.0 0.0.0.0 s0/0/0
ip route 0.0.0.0 0.0.0.0 s0/1/0

ip route 0.0.0.0 0.0.0.0 s0/0/0
ip route 0.0.0.0 0.0.0.0 s0/1/0 10******

ip route 198.133.219.24 255.255.255.252
ip route 64.100.210.80 255.255.255.252 10

ip route 198.133.219.24 255.255.255.252
ip route 64.100.210.80 255.255.255.252

16
Refer to the exhibit. Which default static route command would allow R1 to potentially reach all unknown networks on the Internet?

R1(config)# ipv6 route 2001:db8:32::/64 G0/0
R1(config)# ipv6 route 2001:db8:32::/64 G0/1 fe80::2
R1(config)# ipv6 route ::/0 G0/1 fe80::2*
R1(config)# ipv6 route ::/0 G0/0 fe80::2

17
Refer to the exhibit. What command would be used to configure a static route on R1 so that traffic from both LANs can reach the 2001:db8:1:4::/64 remote network?

ipv6 route ::/0 serial0/0/0
ipv6 route 2001:db8:1::/65 2001:db8:1:3::1
ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::2*
ipv6 route 2001:db8:1:4::/64 2001:db8:1:3::1

18
A company has several networks with the following IP address requirements:

IP phones – 50
PCs – 70
IP cameras – 10
wireless access points – 10
network printers – 10
network scanners – 2

Which block of addresses would be the minimum to accommodate all of these devices if each type of device was on its own network?

172.16.0.0/25
172.16.0.0/24*
172.16.0.0/22
172.16.0.0/23

19 Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.

What IPv6 static route can be configured on router R1 to make a fully converged network?

ipv6 route 2001:db8:10:12::/64 S0/0/0
ipv6 route 2001:db8:10:12::/64 2001:db8:10:12::1
ipv6 route 2001:db8:10:12::/64 S0/0/1*
ipv6 route 2001:db8:10:12::/64 2001:db8:32:77::1

20
What are two advantages of static routing over dynamic routing? (Choose two.)

Static routing uses fewer router resources than dynamic routing.*
Static routing scales well with expanding networks.
Static routing requires very little knowledge of the network for correct implementation.
Static routing is more secure because it does not advertise over the network.*
Static routing is relatively easy to configure for large networks.

21
Refer to the exhibit. The small company shown uses static routing. Users on the R2 LAN have reported a problem with connectivity. What is the issue?

R2 needs a static route to the Internet.
R1 and R2 must use a dynamic routing protocol.
R1 needs a default route to R2.
R1 needs a static route to the R2 LAN.*
R2 needs a static route to the R1 LANs.

22
Which three IOS troubleshooting commands can help to isolate problems with a static route? (Choose three.)

show version
ping*
show ip interface brief*
show ip route*
show arp
tracert

23
Refer to the exhibit. The network administrator needs to configure a default route on the Border router. Which command would the administrator use to configure a default route that will require the least amount of router processing when forwarding packets?

Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/0
Border(config)# ip route 0.0.0.0 0.0.0.0 198.133.219.6
Border(config)# ip route 0.0.0.0 0.0.0.0 198.133.219.5
Border(config)# ip route 0.0.0.0 0.0.0.0 s0/0/1*

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CCNA 2 v5.0 Routing Protocols Chapter 1

CCNA 2 v5.0 Routing Protocols Chapter 1

1
What address changes as a packet travels across multiple Layer 3 Ethernet hops to its final destination?

destination port
destination IP
source IP
source Layer 2 address*

2
A network administrator issues the show ipv6 route command on R1. Which two types of routes are displayed in the routing table? (Choose two.)

directly connected network*
local host route*
static route
route that is learned through the EIGRP routing protocol

3. A network administrator issues the show ip route command on R2. What two types of routes are installed in the routing table? (Choose two.)

routes that are learned through the OSPF routing protocol
a configured static route to the network 209.165.200.224
directly connected networks*
routes that are learned through the EIGRP routing protocol
a configured default route

4
Which two statements correctly describe the concepts of administrative distance and metric?

A router first installs with higher administrative distances.
The value of the administrative distance can not be altered by the network administrator.*
Routes with the smallest metric to a destination indicate the best path
The metric is always determined based on hop count.
Administrative distance refers to the trustworthiness of a particular route.*
The metric varies depending which Layer 3 protocol is being routed, such as IP.

5
A network administrator configures the interface fa0/0 on the router R1 with the command ip address 172.16.1.254 255.255.255.0. However, when the administrator issues the command show ip route, the routing table does not show the directly connected network. What is the possible cause of the problem?

The subnet mask is incorrect for the IPv4 address
No packets with a destination network of 172.16.1.0 have been sent to R1.
The configuration needs to be saved first.
The interface fa0/0 has not been activated.*

6
A network administrator is implementing dynamic routing protocols for a company. Which command can the administrator issue on a router to display the supported routing protocols?

Router(config)# router ?*
Router(config)# ip route ?
Router(config)# service ?
Router(config)# ip forward-protocol ?

7
What are the two functions of a router? (Choose two.)

It manages the VLAN database.
It increases the size of the broadcast domain.
It determines the best path to send packets.*
It controls the flow of data via the use of Layer 2 addresses.
It connects multiple IP networks*

8
Refer to the exhibit. What is the purpose of the highlighted field in the line that is displayed from the show ip route command?

It indicates that this route was learned via EIGRP*
It indicates that this is a default route.
It indicates that this is a directly connected route.
It indicates that the route has been deleted from the routing table

9
A network administrator configures a router by the command ip route 0.0.0.0 0.0.0.0 209.165.200.226. What is the purpose of this command?

to provide a route to forward packets for which there is no route in the routing table*
to forward packets destined for the network 0.0.0.0 to the device with IP address 209.165.200.226
to add a dynamic route for the destination network 0.0.0.0 to the routing table
to forward all packets to the device with IP address 209.165.200.226

10
Which command is used to configure an IPv6 address on a router interface so that the router will combine a manually specified network prefix with an automatically generated interface identified?

ipv6 address ipv6-address/prefix-length link-local
ipv6 enable
ipv6 address ipv6-address/prefix-length eui-64*
ipv6 address ipv6-address/prefix-length

11
Which two items are used by a host device when performing an ANDing operation to determine if a destination address is on the same local network? (choose two.)

source MAC address
destination MAC address
subnet mask*
destination IP address*
network number

12
Refer to the exhibit. Match the description with the routing table entries. (Not all options are used.)

route source protocol = D(which is EIGRP)
destination network = 10.3.0.0
metric=21024000
administrative distance = 1
next hop = 172.16.2.2
route timestamp 00:22:15

13
Refer to the exhibit. PC1 attempts to connect to File_server1 and sends an ARP request to obtain a destination MAC address. Which MAC address will PC1 receive in the ARP reply?

the MAC address of the G0/0 interface on R2
the MAC address on File_server1
the MAC address of the G0/0 interface on R1*

14
What type of IPv6 address is required as a minimum on IPv6 enabled interfaces?

global unicast
loopback
link-local*
static
unique local

15
What two pieces of information are displayed in the output of the show ip interface brief command? (Choose two.)

interface descriptions
next-hop address
IP addresses*
Layer 1 statuses*
MAC addresses
speed and duplex settings

16
Which statement describes a route that has been learned dynamically?

It is identified by the prefix C in the routing table.
It is unaffected by changes in the topology of the network.
It has an administrative distance of 1.
It is automatically updated and maintained by routing protocols.*

17
Refer to the exhibit. A network administrator has configured R1 as shown. When the administrator checks the status of the serial interface, the interface is shown as being administratively down. What additional command must be entered on the serial interface of R1 to bring the interface up?

IPv6 enabled
end
clockrate 128000
no shutdown*

18
A packet moves from a host on one network to a device on a remote network within the same company. If NAT is not performed on the packet, which two items remain unchanged during the transfer of the packet from source to destination? (Choose two.)

source MAC address
destination IP address*
source IP address*
source ARP table
destination MAC address
Layer 2 header

19
Refer to the exhibit. A network administrator issues the show ipv6 route command on R1. What two conclusion can be drawn from the routing table? (Choose two.)

The interface Fa0/1 is configured with IPv6 address 2001:DB8:ACAD:A:12*
The network FF:00::/8 is installed through a static route command.
R1 does not show a route to any remote netowrks.
Packets that are destined for the network 2001:DB8:ACAD:2::54/128 will be forwarded through Fa0/0

20
Refer to the exhibit. What will the router do with a packet that has a destination IP address of 192.168.12.227?

Drop the packet
Send the packet out the Serial0/0/0 interface*
Send the packet out the GigabitEthernet0/1 interface
Send the packet out the GigabitEthernet0/0 interface

21
When a computer is pinging another computer for the first time, what type of message does it place on the network to determine the MAC address of the other device?

an ICMP ping
an ARP request*
a multicast to any Layer 3 devices that are connected to the local network
an RFI (Request for Information) message

22
What is one feature that distinguishes routers from Layer 2 switches?

Switches use tables of information to determine how to process data traffic. Routers do not.
Switches move packets from one physical interface to another. Routers do not.
Routers support a variety of interface types. Switches typically support Ethernet interfaces.*
Routers can be configured with IP addresses. Switches cannot.

23

In order for packets to be sent to a remote destination, what three pieces of information must be configured on a host? (Choose three.)

default gateway*
IP address*
DNS server address
hostname
subnet mask*
DHCP server address

24

Fill in the blank.
When a router receives a packet, it examines the destination address of the packet and looks in the "routing" table to determine the best path to use to forward the packet.

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