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4A0-102 Nokia Border Gateway Protocol Questions and Answers

Questions 4

The following policies are configured and exported using "export "Policy-1" "Policy-2"". Assuming both "Client-1" and "Client-2" are properly defined on the router, which routes are advertised?

4A0-102 Question 4

Options:

A.

Client-1 routes only.

B.

Client-2 routes only.

C.

Client-1 and Client-2 routes.

D.

Neither Client-1 nor Client-2 routes.

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Questions 5

Which of the following organizations would an ISP based in Europe approach for an IP prefix assignment?

Options:

A.

ARIN

B.

ICANN

C.

RIPE NCC

D.

LACNIC

E.

APNIC

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Questions 6

Which of the following statements regarding BGP FRR is FALSE?

Options:

A.

The router must receive several BGP routes to compute a backup path.

B.

BGP FRR can be triggered by BFD.

C.

The backup path can use the same next hop as the primary path.

D.

BGP peer-tracking can be used to improve BGP FRR failure detection times.

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Questions 7

Which of the following regarding the atomic aggregate attribute is TRUE?

Options:

A.

It is an optional transitive attribute.

B.

It is an optional non-transitive attribute.

C.

The atomic aggregate flag is always set if the aggregator attribute is set.

D.

The atomic aggregate flag is always set if the AS Path information is lost due to aggregation.

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Questions 8

Which of the following regarding route reflectors is TRUE?

Options:

A.

Only the route reflector is configured with a cluster id.

B.

There can only be one route reflector in a cluster.

C.

Clients should have iBGP sessions with each other to maintain the mesh.

D.

There can only be one level of route reflectors in the topology.

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Questions 9

Which of the following best describes the relationship between locally configured policies and the direction of traffic?

Options:

A.

Import policies affect the way the local AS receives traffic, while export policies affect the way it sends traffic.

B.

Import policies affect the way the local AS sends traffic, while export policies affect the way it receives traffic.

C.

Both import and export policies affect the way the local AS receives traffic, but not the way it sends traffic.

D.

Both import and export policies affect the way the local AS sends traffic, but not the way it receives traffic.

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Questions 10

Click the exhibit.

4A0-102 Question 10

Router R1 is a route reflector with clients R2, R5 and R6. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6. Assuming that routers R1, R2 and R4 are configured with "add-paths ipv4 send 2 receive", what is the expected output of "show router bgp routes" when executed on router R2?

4A0-102 Question 10

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Questions 11

Click the exhibit.

4A0-102 Question 11

Routers RR1 are RR2 are redundant route reflectors for clients R3 and R4. Which of the following is a valid configuration on router RR1?

4A0-102 Question 11

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Questions 12

Which of the following regarding BGP authentication on the Alcatel-Lucent 7750 SR is FALSE?

Options:

A.

Authentication is performed before establishing the BGP session.

B.

Authentication can only be configuredon the group or neighbor level.

C.

By default, MD5 authentication is disabled.

D.

Peer authentication may be optionally requested in an open message.

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Questions 13

The configuration of an Alcatel-Lucent 7750 SR is given below. Router Rl has established BGP sessions with routers R2 and R3. Which of the following is TRUE?

4A0-102 Question 13

Options:

A.

Router R1forms an iBGP session with router R2, and an eBGP session with router R3.

B.

Router R1forms iBGP sessions with routers R2 and R3.

C.

Router R1forms eBGP sessions with routers R2 and R3.

D.

The types of BGP sessions with routers R2 and R3 cannot be determined.

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Questions 14

Which of the following statements regarding BGP control plane convergence is FALSE?

Options:

A.

Core and edge node failure recovery depends on IGP convergence.

B.

Edge neighbor failure is detected by the eBGP session timeout.

C.

BGP control plane convergence is independent of number of affected prefixes.

D.

Upon BGP control plane convergence, an optimal path is installed in the FIB.

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Questions 15

Click the exhibit.

4A0-102 Question 15

Router R6 is a route reflector for clients R1, R2 and R5 with local preferences 100, 200 and 500 respectively. Router R3 advertises prefix 192.168.1.0/27 to routers R1, R2 and R5 which are configured with advertise-external. Routers R4 and R6 are both configured with "add-paths ipv4 send 2 receive". Which routes to 192.168.0.1/27 is router R4 expected to have in its BGP routing table?

Options:

A.

The routes from routers R1, R2 and R5.

B.

The routes from routers R1and R2.

C.

The routes from routers R2 and R5.

D.

Two routes are chosen at random and advertised to router R4.

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Questions 16

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4A0-102 Question 16

Assuming a full iBGP mesh in ISP 1, how does router R1 in ISP 1 handle a BGP update received from ISP 2?

Options:

A.

The update is sent to router R2 in ISP 1.

B.

The update is sent to routers R2 and R3 in ISP 1.

C.

The update is sent to all routers in ISP 1.

D.

The update is sent to routers R2 and R3 in ISP 1, and to router R3 in ISP 2.

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Questions 17

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

Options:

A.

To protect external networks from instability.

B.

To communicate the architecture of an AS to external ASs.

C.

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

D.

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

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Questions 18

Click the exhibit.

4A0-102 Question 18

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 R1?

4A0-102 Question 18

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Questions 19

Click the exhibit.

4A0-102 Question 19

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?

Options:

A.

R1-R3-R8

B.

R1-R2-R4-R8

C.

R1-R3-R4-R8

D.

R1-R2-R4-R3-R8

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Questions 20

Click the exhibit.

4A0-102 Question 20

Assume all router-IDs are properly configured. Which of the following configurations is required on the Alcatel-Lucent 7750 SR router A to establish an IPv6 BGP session to router D?

4A0-102 Question 20

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

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Questions 21

Click the exhibit.

4A0-102 Question 21

When router A receives the BGP update for the 192.168.0.1/27 prefix, it propagates it to routers B and C. What action is taken by router B when it receives the update?

Options:

A.

Router B propagates the BGP update to routers D and C.

B.

Router B propagates the BGP update to router D.

C.

Router B detects duplicates in its BGP database and discards the update.

D.

Router B propagates the update to routers A, C and D.

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Questions 22

Click the exhibit.

4A0-102 Question 22

AS 65550 owns CIDR block 10.64.0.0/12. Router R3 is advertising Client1 and Client2 networks into BGP. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "summary-only" enabled. Which of the following routes are received by router R7?

Options:

A.

Client1, Client2 and the aggregate.

B.

Only the aggregate.

C.

Only Client1 and the aggregate.

D.

Only Client2 and the aggregate.

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Exam Code: 4A0-102
Exam Name: Nokia Border Gateway Protocol
Last Update: May 8, 2024
Questions: 152

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