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Latest and Most Accurate Cisco 642-883 Dumps Exam Questions and Answers:

Question: 21

Which option is the minimum required configuration to enable PIM on a Cisco IOS XR router interface?

A. router pim
address-family ipv4
interface GigabitEthernet0/0/0/0
B. router pim
interface GigabitEthernet0/0/0/0
address-family ipv4
enable
C. router pim
address-family ipv4
interface GigabitEthernet0/0/0/0
enable
D. router pim
interface GigabitEthernet0/0/0/0
enable
E. router pim
address-family ipv4
interface GigabitEthernet0/0/0/0
address-family ipv4
enable

Answer: D

Question: 22

Refer to the exhibit.

Which configuration on XR2 provides R1 with only the minimum routing information to reach the rest of the network?

A. Router isis ABC
interface GigabitEthernet0/0/0/1
circuit-type level-2-only
B. Router isis ABC
interface GigabitEthernet0/0/0/0
circuit-type level-1-2
C. Router isis ABC
interface GigabitEthernet0/0/0/1
circuit-type level-1
D. Router isis ABC
interface GigabitEthernet0/0/0/0
circuit-type level-1

Answer: D

Question: 23

On Cisco IOS XR Software, which set of commands is used to enable the gi0/0/0/1 interface for OSPF in area 0?

A. interface gi0/0/0/0
ip address 10.1.1.1 255.255.255.0
!
router ospf 1
network 10.1.1.1 0.0.0.0 area 0
B. interface gi0/0/0/0
ip address 10.1.1.1 255.255.255.0
!
router ospf 1
network 10.1.1.1 255.255.255.255 area 0
C. router ospf 1
area 0
interface GigabitEthernet0/0/0/1
D. interface gi0/0/0/0
ip address 10.1.1.1 255.255.255.0
ip ospf 1 area 0
E. router ospf 1
address-family ipv4 unicast
interface GigabitEthernet0/0/0/1 area 0
F. router ospf 1
address-family ipv4 unicast
interface GigabitEthernet0/0/0/1
area 0

Answer: C

Question: 24

Which three statements are true regarding the OSPF router ID? (Choose three.)

A. The OSPF routing process chooses a router ID for itself when it starts up.
B. The router-id command is the preferred procedure to set the router ID.
C. If a loopback interface is configured, its address will always be preferred as the router ID over any other methods.
D. After the router ID is set, it does not change, even if the interface that the router is using for the router ID goes down. The router ID changes only if the router reloads or if the OSPF routing process restarts.
E. In OSPF version 3, the OSPF router ID uses a 128-bit number.

Answer: A, B, D

Question: 25

Which two OSPF network scenarios require OSPF virtual link configuration? (Choose two.)

A. to connect an OSPF non-backbone area to area 0 through another non-backbone area
B. to connect an NSSA area to an external routing domain
C. to connect two parts of a partitioned backbone area through a non-backbone area
D. to enable route leaking from Level 2 into Level 1
E. to enable route leaking from Level 1 into Level 2
F. to enable OSPF traffic engineering

Answer: A, C

Question: 26

What is function of the RP/0/RSP0/CPU0:PE1(config-ospf)#distance Cisco IOS-XR command?

A. To modify the administrative distance of the OSPF routes
B. To modify the default seed metric of the OSPF external routes
C. To modify the OSPF default reference bandwidth
D. To modify the OSPF cost

Answer: A

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