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4A0-102 NokiaBorder Gateway Protocol Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Nokia 4A0-102 NokiaBorder Gateway Protocol certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 149 questions

Click the exhibit.

Which of the following statements best describes the BGP sessions within the given network?

A.

The session between AS 65202 and AS 65206 is an iBGP session.

B.

Thesession between AS 65204 and AS 65206 is an intra-confederation eBGP session.

C.

A BGP session is required between AS 65202 and AS 65204.

D.

The BGP sessions within the member ASs are known as inter-confederation BGP sessions.

What kind of BGP attribute is the Multi_Exit_Disc?

A.

Optional transitive attribute.

B.

Optional non-transitive attribute.

C.

Well-known mandatory attribute.

D.

Well-known discretionary attribute.

Click the exhibit.

An update travels from AS 137000 to AS 135000, traversing both 32-bit and 16-bit AS Paths.

What AS Path is seen by AS 200?

A.

140000 137000

B.

137000 140000

C.

23456 23456

D.

200 140000 137000

Which of the followingregarding the atomic aggregate attribute is TRUE?

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.

Click the exhibit.

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

A.

Option A

B.

Option B

C.

Option C

D.

Option D

When implementing a BGP policy on anNokia7750 SR, which of the following types of address space would a typical address plan need to cover?

A.

RIR assigned CIDR space.

B.

External client address space.

C.

Loopback or link addresses.

D.

External link addresses.

E.

All of the above.

A router in AS 65100 receives two BGP routes. The first route is for138.1.1.0/24 with an AS Path of 65200 65300, Local Preference of 100, MED of 100, and router ID 10.10.10.10. The second route is for 138.1.0.0/16 with an AS Path of 65500 65300, Local Preference of 150, MED of 100, and router ID 10.1.1.1. Assuming all other attributes are equal, which route would be used to forward an IP packet with destination IP address 138.1.1.1?

A.

The first BGP route.

B.

The second BGP route.

C.

Both routes are used.

D.

It is impossible to determine without the value of the origin code for both routes.

Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP. Which of thefollowing AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R7?

A.

65206 65202 65100

B.

(65206 65202)65100

C.

(65204 65206 65202) 65100

D.

(65200) 65100

Which of the following regarding the withdrawal of routes from one BGP speaker to another is

TRUE?

A.

An update message is used. Only a single prefix can be withdrawn at a time.

B.

An update message is used. Multiple prefixes can be withdrawn at a time.

C.

A withdraw message is used. Only a single prefix can be withdrawn at a time.

D.

A withdraw message is used. Multiple prefixes can be withdrawn at a time.

Click the exhibit.

Considering that both routers C and D areadvertising the eBGP learned prefix 10.5.0.0/16 into

ISP X, which of the following best describes the route advertisement within ISP X?

A.

Router C sends the update to routers E and F only.

B.

Router C sends the update to routers D, E and F.

C.

Router C sends the update to routers A, B, E and F.

D.

Router C sends the update to routers A, B, D, E and F.

Click the exhibit.

If router A originates an update for prefix 192.168.0.1/27, what will the update contain when it reaches router B?

A.

AS Path of 65200, local-preference of 100.

B.

AS Path of 65200,local-preference of None.

C.

Null AS Path, local-preference of 100.

D.

Null AS Path, local-preference of None.

Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP policy?

A.

"client2" routes will be tagged with communities "West" and "North".

B.

"client2" routes will be tagged with communities "West", "North" and"South".

C.

"client2" routes will be tagged with community "West".

D.

"client2" routes will be tagged with community "South".

What is the result of configuring the following policy statement as aBGP import policy on theNokia7750 SR?

A.

All BGP routes are rejected.

B.

All BGP routes are accepted.

C.

All routes matching prefix list "List-1" are rejected.

D.

All BGP routes matching prefix list "List-1" are rejected.

Which of the following prefix-lists is the most specific match for prefix 172.31.2.1/24?

A.

Prefix 172.16.0.0/12 longer.

B.

Prefix 172.31.0.0/22 longer.

C.

Prefix 172.31.0.0/23 longer.

D.

Prefix 172.31.0.0/24 exact.

What is the function of the Cluster_List attribute?

A.

It is used for loop detection within the same cluster.

B.

It is used for loop detection between clusters.

C.

It is used for loop detection in a confederation.

D.

It is usedto identify the route reflectors within an AS.

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

A.

Import policies affect the way thelocal 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 thelocal 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.

Click the exhibit.

Which of the following can be used by router R4 in AS 65542 to reject all routesoriginating in AS 65540?

A.

An import policy that rejects updates with an AS Path matching the regular expression ".+ 65540 .+".

B.

An import policy that rejects updates with an AS Path matching the regular expression ".+ 65540".

C.

An import policy thatrejects updates with an AS Path matching the regular expression "65540 .+".

D.

An import policy that rejects updates with an AS Path matching the regular expression "65540".

Which of the following is considered a best practice for BGP address planning?

A.

Advertising external networks into IGP.

B.

Using system addresses for setting up iBGP sessions.

C.

Exportingthe networks associated with the external links of eBGP peers into BGP.

D.

Optimizing BGP route table by exporting IGP routes into BGP.

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 none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "showrouter bgp routes" on router R5?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Which of the following is the minimum requirement for an AS to be considered multi-homed?

A.

A single connection to a single service provider.

B.

Two connections to a single service provider.

C.

Two connections to twodifferent service providers.

D.

Multiple connections to different service providers.

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Total 149 questions
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