642-902 Q&A – Implement an EIGRP based solution (31-35)

Section1 – Implement an EIGRP based solution, given a network design and a set of requirements

QUESTION NO: 31
Which two statements about the EIGRP DUAL process are correct? (Choose two.) Select 2 response(s).
A. An EIGRP route will go active if there are no successors or feasible successors in the EIGRP topology table.
B. An EIGRP route will go passive if there are no successors in the EIGRP topology table.
C. DUAL will trigger an EIGRP query process while placing the flapping routes in the holddown state.
D. A feasible successor in the EIGRP topology table can become the successor only after all the query requests have been replied to.
E. The stuck in active state is caused when the wait for the query replies have timed out.
F. EIGRP queries are sent during the loading state in the EIGRP neighbor establishment process.
Answer: A,E

QUESTION NO: 32
Refer to the exhibit. Routers R1 and R2 have established a neighbor relationship and are exchanging routing information. The network design requires that R1 receive routing updates from R2, but not advertise any routes to R2. Which configuration command sequence will successfully accomplish this task?

image
A. R1(config)# router eigrp 1
    R1(config-router)# passive-interface serial 0
B. R1(config)# access-list 20 deny any
    R1(config)# router eigrp 1
    R1(config-router)# distribute-list 20 out serial 0
C. R2(config)# access-list 20 permit any
    R2(config)# router eigrp 1
    R2(config-router)# distribute-list 20 in serial 0
D. R1(config)# access-list 20 permit any
    R1(config)# router eigrp 1
    R1(config-router)# distribute-list 20 in serial 0
E. R2(config)# access-list 20 deny any
    R2(config)# router eigrp 1
    R2(config-router)# distribute-list 20 out serial 0
F. R2(config)# router eigrp 1
    R2(config-router)# passive-interface serial 0
Answer: B

QUESTION NO: 33
Which command will display EIGRP packets sent and received, as well as statistics on hello packets, updates, queries, replies, and acknowledgments?
A. debug eigrp packets
B. show ip eigrp traffic
C. debug ip eigrp
D. show ip eigrp interfaces
Answer: B
Explanation:
The show ip eigrp traffic command displays the number of Enhanced IGRP (EIGRP) packets sent and received.
Example: The following is sample output from the show ip eigrp traffic command:

Router# show ip eigrp traffic
IP-EIGRP Traffic Statistics for process 77
Hellos sent/received: 218/205
Updates sent/received: 7/23
Queries sent/received: 2/0
Replies sent/received: 0/2
Acks sent/received: 21/14

QUESTION NO: 34
Which EIGRP packet statement is true?
A. Update packets route reliable change information only to the affected routers.
B. Reply packets are multicast to IP address 224.0.0.10 using RTP.
C. On high-speed links, hello packets are broadcast every 5 seconds for neighbor discovery.
D. Reply packets are used to send routing updates.
E. On low-speed links, hello packets are broadcast every 15 seconds for neighbor discovery.
Answer: A

QUESTION NO: 35
Refer to the exhibit. The actual speed of the serial links between R2 and R3 are 256 kb/s and 512kb/s respectively. When configuring EIGRP on routers R2 and R3, the network administrator configured the bandwidth of both serial interfaces to 512 kb/s. What will be the effect? Select the best response.

image
A. EIGRP will overutilize the 512 kb/s link.
B. The interface "delay" value used in the EIGRP metric calculation will be inaccurate on the 256kb/s serial interface.
C. The amount of bandwidth used for EIGRP routing protocol traffic on the 256 kb/s link can become excessive.
D. EIGRP can load balance between the two serial links only if the variance is set to 2 or higher.
E. Unequal cost load balancing will be disabled.
Answer: C

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