Ccna 2 chapter 9 v4.0 answers 2011

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CCNA 2 Chapter 9 V4.0 Answers
1. What two actions will the EIGRP DUAL FSM take if a link to a network goes
down? (Choose two.)
put the route into passive mode
query neighbors for a new route
search routing table for a feasible successor
run the SPF algorithm to find a new successor
search topology table for a feasible successor

2.

Host 192.168.1.66 in the network illustrated is unable to ping host 192.168.1.130.
How must EIGRP be configured to enable connectivity between the two hosts?
(Choose two.)
R1(config-router)# network 192.168.1.128
R1(config-router)# auto-summary
R1(config-router)# no auto-summary
R2(config-router)# no auto-summary
R2(config-router)# auto-summary
R2(config-router)# network 192.168.1.64

3.


Refer to the exhibit. The company is using EIGRP with an autonomous system
number of 10. Pings between hosts on networks that are connected to router A and
those that are connected to router B are successful.
However, users on the 192.168.3.0 network are unable to reach users on the
192.168.1.32 network. What is the most likely cause of this problem?
IP classless is enabled and is causing the packet to drop.
The command network 192.168.1.32 was not issued on router C.
The routers are not configured in the same EIGRP routing domain.
Automatic summarization of the networks is causing the subnetted routes to be dropped.

4. What information is maintained in the EIGRP topology database for a
destination route? (Choose three.)
the routing protocol
the feasible distance of the route
the highest cost of the route
the SRTT value for the route
the route cost as advertised by the neighboring router
the physical address of the gateway interface

5. On a router running EIGRP, what database would maintain a list of feasible
successors?
routing table
neighbor table
topology table
adjacency table

6.


Refer to the exhibit. What is indicated by the P at the beginning of the topology
entry?
the route is in a stable state
the route is a preferred route
DUAL is searching for a better route to this destination
the exit interface is in passive mode and EIGRP advertisements are blocked

7. In the command router eigrp 20, what is the purpose of the number 20?
specifies the administrative distance for all EIGRP routes
identifies the autonomous system number this EIGRP process will advertise
determines what metric is added to all advertised routes
indicates the number of addresses in the EIGRP routing domain

8.

Refer to the exhibit. In the topology table, what do the numbers 3011840 and
3128695 represent?
the route metric that is applied to those EIGRP routes for this router
the trustworthiness of the routing information source
the composite of the hop count and bandwidth to that destination network
the total metric for that network as advertised by the EIGRP neighbor


9. Which two statements describe characteristics of EIGRP? (Choose two.)
EIGRP is a distance vector routing protocol.
EIGRP supports classless routing and VLSM.
EIGRP is classified as a link-state routing protocol.
EIGRP uses TCP for reliable delivery of EIGRP update packets.
With EIGRP, loop-free paths are achieved through the use of hold-down timers.
EIGRP sends a periodic update every 30 minutes.

10.

Refer to the exhibit. Network 192.168.0.0/28 goes down. What type of packet does
Router2 immediately send to Router1 and Router3?
a query for network 192.168.0.0/28
an acknowledgment packet to 224.0.0.9
an update packet that is sent to 255.255.255.255
a packet that contains the new routing table for R2
unicast update packets to 192.168.1.1 and 192.168.2.1

11.

Refer to the exhibit. Which command will advertise the 192.168.1.64/30 network but
not the 192.168.1.32 network on router A?
network 192.168.1.0


network 192.168.1.0 255.255.255.0
network 192.168.1.64 0.0.0.3
network 192.168.1.64 0.0.0.7
network 192.168.1.64 0.0.0.255

12. What administrative distance would a router assign to a default route in EIGRP
that is learned from a source external to the autonomous system?
1
5
70
90
170
190

13. In which of the following tables does the EIGRP DUAL algorithm store the
primary route to a destination? (Choose two.)
routing
topology
neighbor
path
shortest path

14. Which of the following types of routes will be denoted by EX in EIGRP routing
table entries? (Choose two.)
routes learned from other routing protocols
routes learned from any non-adjacent EIGRP routers
any route with a hop count metric higher than 224
EIGRP routes that originate in different autonomous systems
all passive routes in the routing table

15. Which term defines a collection of networks under the administrative control of
a single entity that presents a common routing policy to the Internet?
autonomous system
contiguous networks
process ID
BGP

16.


Refer to the exhibit. EIGRP is the only routing protocol enabled on this network. No
static routes are configured on this router. What can be concluded about network
198.18.1.0/24 from the exhibited output?
A route to network 198.18.1.0/24 is not listed in the routing table.
Packets that are destined for 198.18.1.0/24 will be forwarded to 198.18.10.6.
EIGRP will perform equal cost load balancing across two paths when forwarding packets
to 198.18.1.0/24.
The router with interface 172.16.3.2 is a successor for network 198.18.1.0/24.

17.

Refer to the exhibit. All interfaces have been configured with the bandwidths that
are shown in the exhibit. Assuming that all routers are using a default configuration


of EIGRP as their routing protocol, what path will packets take from the
172.16.1.0/16 network to the 192.168.200.0/24 network?
A,B,E
A,C,E
A,D,E
Packets will load balance across the A,B,E and A,C,E paths.
Packets will load balance across the A,B,E and A,D,E paths.
Packets will load balance across the A,C,E and A,D,E paths.

18. By default, which two metrics are used by EIGRP to determine the best path
between networks?
MTU
load
delay
bandwidth
reliability

19. Which of the following statements describes the bounded updates used by
EIGRP?
Bounded updates are sent to all routers within an autonomous system.
Partial updates are sent only to routers that need the information.
The updates are sent to all routers in the routing table.
Updates are bounded by the routers in the topology table.

20. The show ip eigrp topology command output on a router displays a successor
route and a feasible successor route to network 192.168.1.0/24. In order to reduce
processor utilization, what does EIGRP do when the primary route to this network
fails?
The router sends query packets to all EIGRP neighbors for a better route to network
192.168.1.0/24.
The DUAL FSM immediately recomputes the algorithm to calculate the next backup
route.
Packets that are destined for network 192.168.1.0/24 are sent out the default gateway
instead.
The backup route to network 192.168.1.0/24 is installed in the routing table.

21.


Refer to the exhibit. Based on the output of show ip eigrp neighbors, what are two
possible problems with adjacencies between Router1 and Router2? (Choose two.)
The routers are configured with different EIGRP process IDs.
Automatic summarization was disabled.
The hello timer for R1 was altered.
The serial interfaces for both routers are in different networks.
No feasible successors were found.

22.

Refer to the exhibit. This is the debug output from 2 directly connected EIGRP
routers. They are not forming an adjacency. What is the cause?
one router is a non-cisco router
they have different autonomous-system numbers
they are using difference sequence numbers
they are sending incorrect hello types

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