Cisco 642-883 Exam Review Questions – Updated 2018

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642-883 exam questions, 642-883 PDF dumps; 642-883 exam dumps:: (130 Q&A) (New Questions Are 100% Available! Also Free Practice Test Software!)

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

Question: 21

What is defined by using the Cisco IOS XR policy-global configuration command?

A. the default BGP route policy
B. global variables that can be referenced by any route policy
C. the global default route policy
D. hierarchical route policy
E. nested route policy

Answer: B

Global Configuration Mode
Prompt: (config)
Enter global configuration mode from executive (EXEC) mode by using the configure command. Global configuration commands generally apply to the whole system rather than just one protocol or interface. You can enter all other configuration submodes listed in this section from global configuration mode.
RP/0/RP0/CPU0:router# configure
Global Parameter Configuration Mode
Prompt: (config-rpl-gl)
Enter global parameter configuration mode by using the policy-global command in global configuration mode.
In global parameter configuration mode, you can create or modify a global policy by entering successive commands and then terminating the configuration by entering the end-global command.
For example, to configure global parameters:
RP/0/RP0/CPU0:router(config)# policy-global
RP/0/RP0/CPU0:router(config-rp-gl)# glbpathtype ebgp
RP/0/RP0/CPU0:router(config-rp-gl)# glbtag 100
RP/0/RP0/CPU0:router(config-rp-gl)# end-global

Question: 22

What is the default OSPF seed metric and type?

A. 10 and E1
B. 10 and E2
C. 20 and E1
D. 20 and E2
E. 0 and E1
F. 0 and E2

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
router ospf 1
network area 0
B. interface gi0/0/0/0
ip address
router ospf 1
network area 0
C. router ospf 1
area 0
interface GigabitEthernet0/0/0/1
D. interface gi0/0/0/0
ip address
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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