Nokia 4A0-102 Exam Practice Test Instant Access

Question 1

Click the exhibit.

Router R3 is configured with an import policy to reject updates with an AS Path matching the regular expression ".+ 65540". Which of the following regarding updates originating in AS 65540 is TRUE?

ARouter R3 rejects all updates originating in AS 65540.

BRouter R3 accepts updates received from router R1 and rejects updates transited through router R2.

CRouter R3 accepts updates transited through router R2 and rejects updates received from router R1.

DRouter R3 accepts updates from both routers R1 and R2.

Answer : B

Question 2

Which of the following regarding the TTL of a BGP message is TRUE?

ATTL is a well-known mandatory BGP attribute.

BThe default TTL value of an eBGP message is 1, and 64 for an iBGP message.

CThe default TTL value of an iBGP message can be modified using the multihop command.

DThe default TTL value of an eBGP message can be modified using the 'ttl-security' command.

Answer : B

Question 3

Which of the following is NOT a goal of BGP routing policies?

ATo protect external networks from instability.

BTo communicate the architecture of an AS to external ASs.

CTo protect the local AS and other external ASs from bad NLRI.

DTo optimize ingress and egress traffic patterns to best serve the users of the AS.

Answer : B

Question 4

Click the exhibit.

Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have a full iBGP mesh. What path does traffic destined to 192.168.1.0/27 take from router R1?

AR1-R3-R8

BR1-R2-R4-R8

CR1-R3-R4-R8

DR1-R2-R4-R3-R8

Answer : B

Question 5

Click the exhibit.

An update travels from AS 135000 to AS 137000, traversing both 32-bit and 16-bit AS paths. What will the AS Path be when the update reaches AS 137000?

A140000 200 135000

B137000 140000 200 135000

C140000 23456 135000

D135000 200 140000

Answer : A

Question 6

Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6. Assuming that router R6 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R5?

AOption A

BOption B

COption C

DOption D

Answer : C

Question 7

Why is a full mesh of iBGP peers required?

ATo ensure proper route propagation inside a transit AS.

BTo ensure that all routers are directly connected.

CTo ensure that all routers run iBGP inside a transit AS.

DTo maximize control plane scalability.

Answer : A

Nokia 4A0-102 Nokia Border Gateway Protocol Exam Practice Test