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QUESTION 101
Which three statements are correct about the differences in IS-IS and OSPF? (Choose three.)
A. IS-IS LSP contains TLV fields and OSPF LSU contains the LSAs.
B. New additions to the protocol are easily implemented in OSPF but not with IS-IS.
C. For greater fine tuning there are more IS-IS timers.
D. OSPF has more area types than does IS-IS.
E. IS-IS is more CPU-intensive than is OSPF.
Correct Answer: ACD Section: Multiple Choice Questions Explanation
Explanation/Reference: QUESTION 102
What is the purpose of the eigrp stub configuration command?
A. to increase scalability by limiting the EIGRP query range
B. to reduce the size of the routing table by blocking the D EX (External EIGRP) routes into the EIGRP stub router
C. to reduce the convergence time by enabling the EIGRP stub router to propagate the EIGRP queries from the EIGRP hub router
D. to reduce the convergence time by enabling the EIGRP stub router to also perform query requests to the EIGRP hub router
Correct Answer: A Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 103
Which configuration commands will enable RTA to advertise all local interfaces over OSPF?
A. RTA(config)# router ospf 1RTA(config-router)# default-information originate
B. RTA(config)# router ospf 1RTA(config-router)# network 255.255.255.255 255.255.255.255
C. RTA(config)# router ospf 1RTA(config-router)# network 0.0.0.0
D. RTA(config)# router ospf 1RTA(config-router)# network 0.0.0.0 0.0.0.0
E. RTA(config)# router ospf 1RTA(config-router)# redistribute static
F. RTA(config)# router ospf 1RTA(config-router)# redistribute connected
Correct Answer: F Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 104
Which command lists the system IDs of all known IS-IS routers?
A. show clns neighbors
B. show isis database
C. show isis topology
D. show clns neighbors detail
E. show is-is neighbors detail
Correct Answer: C Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 105
Refer to the exhibit. Which two statements are true? (Choose two.)
A. The eigrp stub command prevents queries from being sent from R2 to R1.
B. The eigrp stub command will automatically enable summarization of routes on R2.
C. The eigrp stub command prevents all routes except a default route from being advertised to R1.
D. Router R1 will advertise connected and summary routes only.
E. Router R1 will advertise connected and static routes. The sending of summary routes will not be permitted.
F. Router R1 is configured as a receive-only neighbor and will not send any connected, static, or summary routes.
Correct Answer: AD Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 106
A network administrator would like to configure an EIGRP router as a stub router that advertises directly connected and summary routes only. What command must the administrator issue to accomplish this?
A. eigrp stub
B. eigrp stub connected
C. eigrp stub summary
D. eigrp stub connected static
E. eigrp stub receive-only
Correct Answer: A Section: Multiple Choice Questions Explanation Explanation/Reference:
QUESTION 107
Refer to the exhibit diagram and configuration. RTB is summarizing its networks from AS 64100 with the aggregate-address command. However, the show ip route command on RTA reveals the RTB individual networks as well as its summary route. Which option would ensure that only the summary route would appear in the routing table of RTA?
A. Delete the four network statements and leave only the aggregate-address statement in the BGP configuration.
B. Add the keyword summary-only to the aggregate-address command.
C. Add a static route with a prefix of 192.168.24.0 255.255.252.0 pointing to the null0 interface.
D. Create a route map permitting only the summary address.
Correct Answer: B Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 108
How is the designated querier elected in IGMPv2?
A. The first router to appear on a subnet is designated.
B. The host that responds first to the election query is designated.
C. The router with the lowest IP address on a subnet is designated.
D. The host with the lowest MAC address on a segment is designated.
Correct Answer: C Section: Multiple Choice Questions Explanation
Explanation/Reference: QUESTION 109
Which type of IGMP message is sent when a network client wants to join a multicast group?
A. host membership query
B. host membership report
C. host membership status
D. host membership notification
Correct Answer: B Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 110
When an IPv6 enabled host boots, it sends a router solicitation (RS) message. An IPv6 router responds with a router advertisement (RA). Which two items are contained in the RA? (Choose two.)
A. IPv6 address for the host
B. lifetime of the prefix
C. prefixes for the link
D. keepalive timers
E. request for the local host IP address
F. any route advertisements it has received
Correct Answer: BC Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 111
Which statement is true concerning 6to4 tunneling?
A. IPv4 traffic is encapsulated with an IPv6 header.
B. The edge routers can use any locally configured IPv6 address.
C. Hosts and routers inside a 6to4 site will need a special code.
D. An edge router must use IPv6 address of 2002::/16 in its prefix.
Correct Answer: D Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 112
Observe the exhibit. If the command variance 3 were added to RTE, which path or paths would be chosen to route traffic to network X?
A. E-B-A
B. E-B-A and E-C-A
C. E-C-A and E-D-A
D. E-B-A, E-C-A and E-D-A
Correct Answer: B Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 113
Refer to the exhibit. What happens when the router stops receiving advertisements for the 10.1.2.0/24 network?
A. The summary route will be removed from the table.
B. The summary route will remain in the table.
C. The more specific routes will be advertised from the table.
D. 10.1.2.0/24 will still be advertised but packets destined for it will be dropped when they reach this router.
Correct Answer: B Section: Multiple Choice Questions
Explanation Explanation/Reference:
QUESTION 114
Which statement is true about EBGP?
A. An internal routing protocol can be used to reach an EBGP neighbor.
B. The next hop does not change when BGP updates are exchanged between EBGP neighbors.
C. A static route can be used to form an adjacency between neighbors.
D. EBGP requires a full mesh.
Correct Answer: C Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 115
Refer to the exhibit. What is the effect of the distribute-list command in the R1 configuration?
A. R1 will filter only the 172.24.1.0/24 route from the R2 RIP updates.
B. R1 will permit only the 10.0.0.0/24 route in the R2 RIP updates.
C. R1 will filter the 10.1.0.0/24 and the 172.24.1.0/24 routes from the R2 RIP updates.
D. R1 will not filter any routes because there is no exact prefix match.
Correct Answer: C Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 116
Based on the information in the exhibit, which statement is true?
A. RTC will be able to access the 10.0.0.0 network.
B. RTC will not have the 10.0.0.0 network in its routing table.
C. RTC will not have the 192.168.10.0 network in its routing table.
D. RTB will not have the 10.0.0.0 network in its routing table.
E. RTB and RTC will not have the 10.0.0.0 network in their routing tables.
Correct Answer: B Section: Multiple Choice Questions Explanation
Explanation/Reference:
Well-regarded for its level of detail, assessment features, and challenging review questions and hands-on exercises, Cisco 642-901 helps you master the concepts and techniques that will enable you to succeed on the Cisco 642-901 exam the first time.