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4A0-C02 Nokia SRA Composite Exam Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Nokia 4A0-C02 Nokia SRA Composite Exam 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 639 questions

Which of the following about BGP Site of Origin (SoO) is FALSE?

A.

The SoO attribute can be used to uniquely identify the site from which a PE learns routes.

B.

Before a PE redistributes a VPN-IPv4 route, it can assign an SoO attribute to the route.

C.

The SoO attribute can be used to prevent loops from a single site with multiple CE-PE connections.

D.

The SoO attribute can be used as matching criteria when redistributing routes from the CE to the PE.

Click the exhibit.

Which of the following commands produces the output for the inter-AS model B VPRN?

A.

ASBR1# show router 10 bgp routes vpn-ipv4

B.

ASBR1# show router bgp routes

C.

ASBR1# show router bgp routes vpn-ipv4

D.

ASBR1# show router route-table

Which of the following commands may be used on an Alcatel-Lucent 7750 SR to display a network exported locally to BGP on the originating router? (Choose two)

A.

Show router bgp routes

B.

Show router bgp routes prefix

C.

Show router bgp routes self-originated

D.

Show router bgp routes hunt

E.

Show router bgp neighbor advertised-routes

Which of the following regarding "well-known discretionary'' BGP attributes is TRUE?

A.

They must be recognized by all peers and included in all BGP updates.

B.

They are discarded if not recognized by the recipient.

C.

They must be recognized by all peers and optionally included in BGP updates.

D.

The receiving router sends a notification if a well-known discretionary attribute is not present in an update.

Which of the following commands would correctly configure the confederation AS number as 65200 with a member AS of 65202?

A.

config>router- confederation 65200 members 65202

B.

config>router>bgp= confederation 65200 members 65202

C.

config>router= confederation 65202 members 65200

D.

config>router>bgp= confederation 65202 members 65200

Which of the following behaviors regarding the modification of BGP attributes within a confederation is TRUE?

A.

Next Hop is modified when crossing member AS boundaries within a confederation.

B.

Origin Code is modified when crossing member AS boundaries within a confederation.

C.

AS Path is modified when crossing member AS boundaries within a confederation.

D.

None of the well known mandatory attributes is modified within a confederation.

What happens to a route that is rejected by an import policy on an Alcatel-Lucent 7750 SR?

A.

The route is discarded.

B.

The route is kept in the RIB-In, but marked as an invalid route.

C.

The route is moved to the LOC-RIB, but not marked as a used route.

D.

The route is moved to the route table, but not to the FIB.

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 two different service providers.

D.

Multiple connections to different service providers.

Click the exhibit.

Assuming router A is configured with "next-hop-self", what does the BGP update for prefix 192.168.0.1/27 contain when it arrives at router B?

A.

AS Path of 65200 65100, Next Hop of router A.

B.

AS Path of 65200 65100, Next Hop of router E.

C.

AS Path of 65100, Next Hop of router A.

D.

AS Path of 65100, Next Hop of router E.

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

A.

"client1" routes will be tagged with communities "North" and "West".

B.

"client1" routes will be tagged with community "West".

C.

"client1" routes will be tagged with community "North".

D.

"client1" routes will be rejected.

Click the exhibit.

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?

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.

Which of the following regarding the connections between eBGP peers is TRUE?

A.

eBGP peers typically use system addresses for session establishment.

B.

eBGP peers are managed under a single administration.

C.

eBGP peers do not propagate updates learned via iBGP.

D.

eBGP peers are usually directly connected to each other.

Which of the following is NOT a BGP message type?

A.

Route-Refresh

B.

OpenSent

C.

Notification

D.

Update

E.

Keepalive

Click the exhibit.

After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be propagated to?

A.

All routers with which it has a BGP session.

B.

All routers with which it has a BGP session, except the router it received the update from, which is router B.

C.

All routers with which it has a BGP session, except the router it received the update from, which is router C.

D.

All routers with which it has a BGP session, except the router it received the update from, which is router D.

E.

Only eBGP neighbors.

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

A.

"client2" routes will be only tagged with communities 'East'' and "South".

B.

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

C.

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

D.

"client2" routes will be rejected.

Router R1, in AS 65540, has the export policy shown below. It advertises an aggregate route to eBGP peer router R2 in 65550. What is the AS Path of the aggregate route received by router R2?

A.

65540

B.

65540 1

C.

65540 65540

D.

65550 65540

Based on the default settings for the Alcatel-Lucent 7750 SR, when a policy change is made and committed, what action is required by the user for the change to take effect?

A.

Execute a command to re-evaluate all routes in the Local-RIB against the configured export policies.

B.

Execute a command to re-evaluate all routes in the RIB-In against the configured import policies.

C.

Execute a command to reset the BGP session with the affected peer or peers.

D.

No further action is required.

Click the exhibit.

Router R6 is a route reflector for clients R1, R2 and R5. Router R5 is configured with a local preference of 200. On which routers is "advertise-external* needed for router R6 to receive exactly two distinct routes for prefix 192.168.1.0/27?

A.

On router R5 only.

B.

On either router R1or R2.

C.

On both routers R1and R2.

D.

On all routers R1, R2 and R5.

Which of the following statements regarding route reflectors is TRUE?

A.

Route reflectors propagate BGP learned routes to their clients.

B.

Route reflectors require "n" iBGP sessions, where "n" is the number of BGP routers in the AS.

C.

Route reflectors disable iBGP split horizon for all iBGP peers in the AS.

D.

Route reflectors do not work in conjunction with confederations.

The user of an Alcatel-Lucent 7750 SR wants to see the effect of changing an import policy immediately. What is the best command to force re-evaluation of the import policy with minimal impact?

A.

Configure router bgp shutdown

B.

Clear router bgp neighbor soft

C.

Clear router bgp neighbor soft-inbound

D.

Clear router bgp protocol

Click the exhibit.

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

A.

AS Path of 65200, Next Hop of router A, Origin of IGP.

B.

AS Path of 65200, Next Hop of router A, Origin of incomplete.

C.

Null AS Path, Next Hop of router A, Origin of IGP.

D.

Null AS Path, Next Hop of router A, Origin of incomplete.

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

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.

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

A.

ARIN

B.

ICANN

C.

RIPE NCC

D.

LACNIC

E.

APNIC

What is the result of configuring the following policy statement as a BGP import policy on the Alcatel-Lucent 7750 SR?

A.

All BGP routes are accepted.

B.

All routes matching prefix lists "List-1" and "List-2" are rejected.

C.

BGP routes matching prefix lists "List-1" or "List-2" are rejected.

D.

BGP routes matching prefix lists "List-1" and "List-2" are rejected.

Which of the following about a single-homed AS is FALSE?

A.

A single-homed AS is also known as a stub AS.

B.

A single-homed AS is also known as a leaf AS.

C.

A single-homed AS uses either the ISP AS number or a private AS number.

D.

A single-homed AS can be either transit or non-transit

What kind of BGP attribute is the Local Preference?

A.

Optional transitive attribute.

B.

Optional non-transitive attribute.

C.

Well-known mandatory attribute.

D.

Well-known discretionary attribute.

Upon the successful establishment of a TCP session between peers, what type of BGP message is exchanged?

A.

OpenSent

B.

Keepalive

C.

Open

D.

Notification

E.

Update

An Alcatel-Lucent 7750 SR is configured with a local preference of 250. If it receives a BGP update with a local preference of 500, what local preference is sent to its eBGP peers?

A.

100

B.

250

C.

500

D.

None

Click the exhibit.

AS 65550 owns the CIDR block 10.64.0.0/12. Router R4 advertises the aggregate 10.64.0.0/12 to AS65540. Which of the following is TRUE regarding the aggregate route advertisement?

A.

The aggregator attribute will not be present, and the atomic aggregate flag will not be set.

B.

The aggregator attribute will not be present, and the atomic aggregate flag will be set.

C.

The aggregator attribute will be present, and the atomic aggregate flag will not be set.

D.

The aggregator attribute will be present, and the atomic aggregate flag will be set.

Which of the following is FALSE regarding the 16-bit public autonomous system numbers?

A.

They are allocated to the RIRs by ICANN/IANA.

B.

They are used when connecting ASs on the Internet.

C.

They range from 1 to 56319.

D.

They are assigned by the ISPs for enterprise networks.

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