SB&W: Exam CH 7 & 8

Question 1 of 44

1

If all router Ethernet interfaces in an EIGRP network are configured with the default EIGRP timers, how long will a router wait by default to receive an EIGRP packet from its neighbor before declaring the neighbor unreachable?

Select one of the following:

10 seconds
15 seconds
20 seconds
30 seconds

Explanation

Question 2 of 44

1

Fill the blank space to complete the text.

In an EIGRP topology table, a route that is in a/an state will cause the Diffusing Update Algorithm to send EIGRP queries that ask other routers for a path to this network.

Explanation

Question 3 of 44

1

A new network administrator has been asked to verify the metrics that are used by EIGRP on a Cisco device. Which two EIGRP metrics are measured by using static values on a Cisco device? (Choose two.)

Select one or more of the following:

load
MTU
reliability
delay
bandwidth

Explanation

Question 4 of 44

1

Fill the blank space to complete the text.

EIGRP uses the protocol to deliver EIGRP packets to neighbors.

Explanation

Question 5 of 44

1

Which two EIGRP packet types are sent with unreliable delivery? (Choose two.)

Select one or more of the following:

hello
update
reply
acknowledgement
query

Explanation

Question 6 of 44

1

Why would a network administrator use a wildcard mask in the network command when configuring a router to use EIGRP?

Select one of the following:

to send a manual summarization
to exclude some interfaces from the EIGRP process
to subnet at the time of the configuration
to lower the router overhead

Explanation

Question 7 of 44

1

What is indicated when an EIGRP route is in the passive state?

Select one of the following:

The route must be confirmed by neighboring routers before it is put in the active state.
The route is viable and can be used to forward traffic.
The route has the highest path cost of all routes to that destination network.
There is no activity on the route to that network.
The route is a feasible successor and will be used if the active route fails.

Explanation

Question 8 of 44

1

Refer to the exhibit. R3 has two possible paths to the 172.16.99.0 network. What is the reported distance of the feasible successor route?

Select one of the following:

2169856
2816
10512128
2340608

Explanation

Question 9 of 44

1

Which destination MAC address is used when a multicast EIGRP packet is encapsulated into an Ethernet frame?

Select one of the following:

01-00-5E-00-00-09
01-00-5E-00-00-10
01-00-5E-00-00-0A
01-00-5E-00-00-0B

Explanation

Question 10 of 44

1

Which configuration is necessary to ensure successful operation of EIGRP for IPv6?

Select one of the following:

The no shutdown command is required within the router configuration mode
The router eigrp autonomous-system command is required within the router configuration mode.
The eigrp router-id command requires an IPv6 address within the router configuration mode.
The network command is required within the router configuration mode

Explanation

Question 11 of 44

1

Which table is used by EIGRP to store all routes that are learned from EIGRP neighbors?

Select one of the following:

the routing table
the adjacency table
the topology table
the neighbor table

Explanation

Question 12 of 44

1

Which command is used to display the bandwidth of an interface on an EIGRP-enabled router?

Select one of the following:

show ip route
show ip protocols
show interfaces
show ip interface brief

Explanation

Question 13 of 44

1

What is identified within the opcode of an EIGRP packet header?

Select one of the following:

the EIGRP sum of delays from source to destination
the EIGRP autonomous system metrics
the EIGRP message type that is being sent or received from a neighbor
the EIGRP hold timer agreed upon with a neighbor

Explanation

Question 14 of 44

1

Refer to the exhibit. Which two networks contain feasible successors? (Choose two.)

Select one or more of the following:

192.168.71.0
192.168.51.0
10.44.100.252
10.44.101.252
10.44.104.253

Explanation

Question 15 of 44

1

How do EIGRP routers establish and maintain neighbor relationships?

Select one of the following:

by exchanging neighbor tables with directly attached routers
by comparing known routes to information received in updates
by exchanging hello packets with neighboring routers
by dynamically learning new routes from neighbors
by exchanging routing tables with directly attached routers

Explanation

Question 16 of 44

1

What is the purpose of using protocol-dependent modules in EIGRP?

Select one of the following:

to describe different routing processes
to accommodate routing of different network layer protocols
to use different transport protocols for different packets
to identify different application layer protocols

Explanation

Question 17 of 44

1

Refer to the exhibit. Which command should be used to configure EIGRP to only advertise the network that is attached to the gigabit Ethernet 0/1 interface?

Select one of the following:

network 172.16.23.64 0.0.0.63
network 172.16.23.64 0.0.0.127
network 172.16.23.0 255.255.255.192
network 172.16.23.0 255.255.255.128

Explanation

Question 18 of 44

1

Which command or commands must be entered on a serial interface of a Cisco router to restore the bandwidth to the default value of that specific router interface?

Select one of the following:

bandwidth 1500
shutdown
no shutdown
copy running-config startup-config
reload
no bandwidth

Explanation

Question 19 of 44

1

What is the multicast address used by an EIGRP-enabled router operating with IPv6?

Select one of the following:

FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
FF02::1
FF02::B
FF02::A

Explanation

Question 20 of 44

1

An administrator issues the router eigrp 100 command on a router. What is the number 100 used for?

Select one of the following:

as the autonomous system number
as the maximum bandwidth of the fastest interface on the router
as the number of neighbors supported by this router
as the length of time this router will wait to hear hello packets from a neighbor

Explanation

Question 21 of 44

1

What information does EIGRP maintain within the routing table?

Select one of the following:

adjacent neighbors
all routes known to the router
only successors
only feasible successors
both successors and feasible successors

Explanation

Question 22 of 44

1

Which EIGRP parameter must match between all routers forming an EIGRP adjacency?

Select one of the following:

hold timer
variance
hello timer
administrative distance
autonomous system number

Explanation

Question 23 of 44

1

Which administrative distance is used to advertise routes learned from other protocols that are redistributed into EIGRP?

Select one of the following:

170
90
115
5

Explanation

Question 24 of 44

1

Refer to the exhibit. A network administrator has configured EIGRP authentication between routers R1 and R2. After the routing tables are reviewed, it is noted that neither router is receiving EIGRP updates. What is a possible cause for this failure?

Select one of the following:

The same autonomous system numbers must be used in the interface configurations of each router.
The same key chain name must be used on each router.
The key string should be used in interface mode instead of the key chain.
The same number of key strings must be used on each router
The authentication configuration is correct, issue the show ip eigrp neighbors command to troubleshoot the issue.

Explanation

Question 25 of 44

1

Refer to the exhibit. Which two routes will be advertised to the router ISP if autosummarization is disabled? (Choose two.)

Select one or more of the following:

10.1.4.0/30
10.1.2.0/24
10.1.0.0/16
10.1.4.0/24
10.1.4.0/28

Explanation

Question 26 of 44

1

Refer to the exhibit. A network administrator has attempted to implement a default route from R1 to the ISP and propagate the default route to EIGRP neighbors. Remote connectivity from the EIGRP neighbor routers to the ISP connected to R1 is failing. Based on the output from the exhibit, what is the most likely cause of the problem?

Select one of the following:

The network statement for the ISP connection has not been issued
There are no EIGRP neighbor relationships on R1.
The command redistribute static has not been issued on R1
The ip route command must specify a next-hop IP address instead of an exit interface when creating a default route
The command default-information originate has not been issued on R1

Explanation

Question 27 of 44

1

What two statements are correct regarding EIGRP authentication? (Choose two.)

Select one or more of the following:

EIGRP authentication requires that both routers have the same key chain name.
EIGRP authentication uses varying levels of WEP to encrypt data exchanged between routers.
EIGRP authentication uses the MD5 algorithm.
EIGRP authentication can be configured on one router and updates from this router are protected; whereas a neighbor router can be without the authentication configuration and its updates are unprotected.
EIGRP authentication uses a pre-shared key.

Explanation

Question 28 of 44

1

Refer to the exhibit. Which statement is supported by the output?

Select one of the following:

The route to 192.168.1.1 represents the configuration of a loopback interface.
A default route is being learned through an external process.
Summarization of routes has been manually configured.
A static default route has been manually configured on this router.

Explanation

Question 29 of 44

1

Refer to the exhibit. After the configuration shown is applied on router R1, the exhibited status message is displayed. Router R1 is unable to form a neighbor relationship with R2 on the serial 0/1/0 interface. What is the most likely cause of this problem?

Select one of the following:

The networks that are configured on serial 0/0/0 and serial 0/1/0 of router R1 are overlapping.
The passive-interface command should have been issued on serial 0/1/0.
The IPv4 address configured on the neighbor that is connected to R1 serial 0/1/0 is incorrect.
The network statement used for EIGRP 55 does not enable EIGRP on interface serial 0/1/0.
The hello interval has been altered on serial 0/1/0 and is preventing a neighbor relationship from forming.

Explanation

Question 30 of 44

1

Fill the blank space to complete the text.

What is the command that should be issued on a router to verify that EIGRP adjacencies were formed?

Explanation

Question 31 of 44

1

Refer to the exhibit. Considering that R2, R3, and R4 are correctly configured, why did R1 not establish an adjacency with R2, R3, and R4?

Select one of the following:

because the Fa0/0 interface of R1 is declared as passive for EIGRP
because there is no network command for the network 192.168.1.0/24 on R1
because the automatic summarization is enabled on R1
because the IPv4 address on Fa0/0 interface of R1 is incorrect

Explanation

Question 32 of 44

1

Which address best summarizes the IPv6 addresses 2001:DB8:ACAD::/48, 2001:DB8:9001::/48, and 2001:DB8:8752::/49?

Select one of the following:

2001:DB8:8000::/36
2001:DB8:8000::/34
2001:DB8:8000::/48
2001:DB8:8000::/47

Explanation

Question 33 of 44

1

By default, how many equal-cost routes to the same destination network will EIGRP install in the routing table?

Select one of the following:

2
4
6
8

Explanation

Question 34 of 44

1

In which scenario will the use of EIGRP automatic summarization cause inconsistent routing in a network?

Select one of the following:

when the routers in an IPv4 network have mismatching EIGRP AS numbers
when there is no common subnet that exists between neighboring routers
when the routers in an IPv4 network are connected to discontiguous networks with automatic summarization enabled
when there is no adjacency that is established between neighboring routers

Explanation

Question 35 of 44

1

Refer to the exhibit. A network administrator has issued the shown commands. The EIGRP routing domain has completely converged and a network administrator is planning on configuring EIGRP authentication throughout the complete network. On which two interfaces should EIGRP authentication be configured between R2 and R3? (Choose two.)

Select one or more of the following:

serial 0/0/1 of R3
gig 0/0 of R3
serial 0/1/0 of R4
serial 0/1/0 of R2
serial 0/0/1 of R2

Explanation

Question 36 of 44

1

Refer to the exhibit. Router CiscoVille has been partially configured for EIGRP authentication. What is missing that would allow successful authentication between EIGRP neighbors?

Select one of the following:

The CiscoVille router requires a second keychain to function correctly when using two interfaces for EIGRP authentication.
The keychain for EIGRP authentication must be configured on the interfaces.
A username and password must be configured.
The interfaces that will use EIGRP authentication must be specified.

Explanation

Question 37 of 44

1

Two routers, R1 and R2, have established an EIGRP neighbor relationship, but there is still a connectivity problem. Which issue could be causing this problem?

Select one of the following:

an access list that is blocking advertisements from other networks
an authentication mismatch
automatic summarization that is disabled on both routers
a process ID mismatch

Explanation

Question 38 of 44

1

Refer to the exhibit. Router R3 is receiving multiple routes through the EIGRP routing protocol. Which statement is true about the implementation of summarization in this network?

Select one of the following:

Automatic summarization has been enabled only for the 172.21.100.0/24 network.
Automatic summarization is disabled on R3.
Automatic summarization is enabled on neighboring routers
Automatic summarization is disabled on a per-interface basis.

Explanation

Question 39 of 44

1

Refer to the exhibit. All networks are active in the same EIGRP routing domain. When the auto-summary command is issued on R3, which two summary networks will be calculated on R3? (Choose two.)

Select one or more of the following:

192.168.10.0/30
172.16.0.0/16
192.168.10.0/24
192.168.1.0/30
172.16.3.0/24

Explanation

Question 40 of 44

1

Which command can be issued on a router to verify that automatic summarization is enabled?

Select one of the following:

show ip eigrp interfaces
show ip eigrp neighbors
show ip protocols
show ip interface brief

Explanation

Question 41 of 44

1

What is a characteristic of manual route summarization?

Select one of the following:

cannot include supernet routes
reduces total number of routes in routing tables
requires high bandwidth utilization for the routing updates
has to be configured globally on the router

Explanation

Question 42 of 44

1

Refer to the exhibit. Which two conclusions can be drawn from the exhibited configuration? (Choose two.)

Select one or more of the following:

The configuration supports unequal-cost load balancing.
Any EIGRP-learned route with a metric less than 3 times the successor metric will be installed in the local routing table.
The configuration supports equal-cost load balancing.
The network statements require subnet masks to prevent autosummarization.
Any EIGRP-learned route with a metric equal to 3 times the successor metric will be installed in the local routing table.

Explanation

Question 43 of 44

1

What is the purpose of a Null0 route in the routing table?

Select one of the following:

to prevent the router from sending EIGRP packets
to redistribute external routes into EIGRP
to prevent routing loops
to act as a gateway of last resort

Explanation

Question 44 of 44

1

Which command would limit the amount of bandwidth that is used by EIGRP for protocol control traffic to approximately 128 Kb/s on a 1.544 Mb/s link?

Select one of the following:

ip bandwidth-percent eigrp 100 8
variance 8
maximum-paths 8
traffic-share balanced

	Created by Anthony Schulmeister almost 9 years ago