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QUESTION 117
Which two are characteristics of the IS-IS protocol but not OSPF? (Choose two.)
A. provides for network scalability by allowing the network to be separated into areas
B. provides routing support for multiple network layer protocols
C. three layers of hierarchical routing
D. utilizes SPF algorithm
E. forms adjacencies with all neighbors
F. supports demand circuit routing
Correct Answer: BE Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 118
Which three are benefits of IS-IS over OSPF? (Choose three.)
A. supports more routers in an area
B. does not require Hello packets to establish neighbor relationships
C. produces fewer link state advertisements for a given network
D. supports route tags
E. supports network layer protocols other than IP
F. requires fewer neighbor relationships in a broadcast multiaccess network
Correct Answer: ACE Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 119
Which two conditions can cause BGP neighbor establishment to fail? (Choose two.)
A. There is an access list blocking all TCP traffic between the two BGP neighbors.
B. The IBGP neighbor is not directly connected.
C. BGP synchronization is enabled in a transit autonomous system with fully-meshed IBGP neighbors.
D. The BGP update interval is different between the two BGP neighbors.
E. The BGP neighbor is referencing an incorrect autonomous system number in its neighbor statement.
Correct Answer: AE Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 120
Based on the exhibited command output, which two statements are true? (Choose two.)

A. The EIGRP network is stable.
B. The router at 10.1.1.3 has not replied to the R1 query packet.
C. The route to 172.19.0.0/16 is undergoing recomputation.
D. The route to 172.19.0.0/16 is stuck-in-active.
E. R1 has sent a query packet to 10.1.1.2.
Correct Answer: CE Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 121
Based on the exhibited output, which three statements are true? (Choose three.)

A. R1 is configured with the ip summary-address command.
B. The route to 10.2.0.0/16 was redistributed into EIGRP.
C. R1 is configured with the variance command.
D. A default route has been redistributed into the EIGRP autonomous system.
E. The router at 10.1.1.2 is configured with the ip default-network 0.0.0.0 command.
F. R1 is sourcing an external EIGRP route from Null0.
Correct Answer: ACD Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 122
Refer to the exhibit. Which statement is true?

A. RTA will redistribute the RIP routes into the NSSA as type 7 LSAs. RTB will translate the type 7 LSAs into type 5 LSAs and flood them throughout the OSPF backbone.
B. RTA will redistribute the RIP routes into the NSSA as type 7 LSAs. RTB will flood the type 7 LSAs throughout the backbone.
C. RTA will redistribute the RIP routes into the NSSA as type 5 LSAs. RTB will flood the type 5 LSAs throughout the backbone.
D. RTA will redistribute the RIP routes into the NSSA as type 5 LSAs. RTB will translate the type 5 LSAs into type 7 LSAs and flood them throughout the OSPF backbone.
E. RTA will not redistribute the RIP routes into the NSSA.
Correct Answer: A Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 123
OSPF is configured over a Frame Relay network as shown in the exhibit. All PVCs are active. However, R1 and R3 fail to see all OSPF routes in their routing tables. The show ip ospf neighbor command executed on R2 shows the state of the neighbors. What should be done to fix the problem?

A. The ip ospf network non-broadcast command should be configured on each Frame Relay interface.
B. The ip ospf network broadcast command should be configured on each Frame Relay interface.
C. The neighbor command should be configured under the OSPF routing process on all routers.
D. The ip ospf priority value on the hub router should be set to 0.
E. The ip ospf priority value on the spoke routers should be set to 0.
Correct Answer: E Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 124
Which three statements are true about the Internet Group Management Protocol (IGMP)? (Choose three.)
A. IGMP is a multicast routing protocol that makes packet-forwarding decisions independent of other routing protocols such as EIGRP.
B. IGMP is used to register individual hosts with a multicast group.
C. IGMP messages are IP datagrams with a protocol value of 2, destination address of 224.0.0.2, and a TTL value of 1.
D. IGMP snooping runs on Layer 3 routers.
E. IGMP version 3 enables a multicast receiving host to specify to the router which sources it should forward traffic from.
F. There are three IGMP modes: dense mode, sparse mode, and sparse-dense mode.
Correct Answer: BCE Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 125
Refer to the exhibit. Given the output of a debug ip mrouting command, which two statements are true? (Choose two.)

A. This router received an IGMP host report from a group member or a PIM join message.
B. The reverse path forwarding (RPF) for the route 224.2.0.1 failed to find the interface on which the multicast packet was received.
C. Multicast route to 10.16.0.0/16 was added to the mroute table and created by a source directly connected to the router.
D. Multicast route to 224.69.15.0/24 was added to the mroute table and created by a source directly connected to the router.
E. The route to 224.69.15.0/24 will be out Ethernet 0.
Correct Answer: AC Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 126
Which two multicast IP addresses can be represented by the multicast MAC address 0100.5e0A.0A07? (Choose two.)
A. 228.10.10.7
B. 228.10.10.8
C. 228.10.138.7
D. 229.11.10.7

E. 229.138.10.7
F. 229.138.10.8
Correct Answer: AE Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 127
Refer to the exhibit. Which two conclusions can be drawn from the debug ip igmp output? (Choose two.)

A. IP PIM RP mapping is static.
B. The IP multicast groups are 224.0.0.1, 224.0.1.40, and 239.255.0.1.
C. Router RTA received an IGMP report version 1 from host 192.168.9.1.
D. Reverse Path Forwarding (RPF) is enabled for 224.0.1.40.
E. The router sent an IGMP version 2 query out interface Ethernet1 at multicast address 224.0.0.1.
F. Reverse Path Forwarding (RPF) is enabled for 192.168.9.4.
Correct Answer: CE Section: Multiple Choice Questions Explanation
Explanation/Reference:
QUESTION 128
Refer to the exhibit. What are two important facts in interpreting the output of the show ip piminterfacecommand? (Choose two.)

A. Multiaccess segments elect a DR based on lowest IP address.
B. Multiaccess segments elect a DR based on highest IP address.
C. Multiaccess, multicast segments do not elect a DR.
D. The RP is only seen in version 2 of Sparse-Dense mode.
E. Point-to-Point links do not display DR information.
Correct Answer: BE Section: Multiple Choice Questions
Explanation Explanation/Reference:

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Cisco 642-901 Real Exam, Free Download Cisco 642-901 Exam Dump For Download