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Exam Practice | 642-883 Exam Questions & Answers

QUESTION 1

Which ISP tier, also known as default-free, provides global reachability info?

A. Tier 1 ISP

B. Tier 0 ISP

C. Tier 3 ISP

D. Tier 2 ISP

Correct Answer: A

QUESTION 2

A Cisco IOS XR router must be configured with BFD for OSPF. Which configuration is correct?

A. interface GigabitEthernet0/0/0/0 ip ospf bfd

B. router ospf 1 area 0 interface GigabitEthernet0/0/0/0 bfd fast-detect

C. router ospf 1 area 0 interface GigabitEthernet0/0/0/0 bfd fast-detect ipv4

D. router ospf 1 bfd all-interfaces

Correct Answer: B

QUESTION 3

An engineer has two routers multihomed to the Internet via BGP. The first should be the primary path for all outbound

traffic and the second should automatically become active in the event the primary goes offline. Which method to

configure the routers is the most simple?

A. Set the local-preference to be higher on the primary router.

B. Set the local-preference to be lower on the primary router.

C. Set the MED to be higher on the primary router than the backup.

D. Set the primary router to have a higher weight than the backup.

Correct Answer: A

QUESTION 4

Refer to the exhibit.

R1 is advertising subnets 1.1.1.X/32 via eBGP. XR4 must accept only the first seven subnets in its BGP table. Which
configuration must occur on XR2 to meet these parameters?
A. route-policy INBOUND if destination in SUBNETS then pass endif router bgp 100 neighbor 10.10.14.1 address-family
ipv4 unicast route-policy INBOUND in
B. route-policy INBOUND if destination in FILTER then pass endif router bgp 100 neighbor 10.10.14.1 address-family
ipv4 unicast route-policy INBOUND in
C. router bgp 100 neighbor 10.10.14.1 address-family ipv4 unicast route-policy FILTER in
D. router bgp 100 neighbor 10.10.14.1 address-family ipv4 unicast route-policy SUBNETS in
Correct Answer: B 

QUESTION 5In Cisco IOS XE, which option is the default threshold value for slow peer detection?
A. 120 seconds
B. 180 seconds
C. 240 seconds
D. 300 seconds
Correct Answer: D

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