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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

What is the result of initiating an oam mac-ping to an unknown unicast MAC address in a VPLS instance?

A.

The oam mac-ping will fail. The MAC address must be known in the local FDB to be successful.

B.

The request will be flooded and the only response will come from the PE node that has learned the specified MAC address on a local SAP.

C.

The request will be flooded and the CE device with the corresponding MAC will reply.

D.

All nodes will reply because the oam mac-ping is flooded.

Which of the following functions must a PE router support when participating in a VPLS service? (Choose 3)

A.

MAC learning

B.

Frame replication

C.

Frame fragmentation

D.

Frame forwarding

E.

Must discard frames with an unknown destination MAC

F.

MSTP

Click on the exhibit below.

CE-A is on VLAN 200 and CE-B is on VLAN 300. Which of the following SAP ids can be configured on PE-A and PE-B to allow direct communication between CE-A and CE-B?

A.

PE-A will require a SAP id of "sap 1/1/1:200" and PE-B will require a SAP id of "sap 1/1/1:300.

B.

PE-A will require a SAP id of "sap 1/1/1" and PE-B will require a SAP id of "sap 1/1/1".

C.

PE-A will require a SAP id of "sap 1/1/1:0" and PE-B will require a SAP id of "sap 1/1/1:0".

D.

PE-A will require a SAP id of "sap 1/1/1:*" and PE-B will require a SAP id of "sap 1/1/1:*".

What are the advantages of running a physical ring topology with a mesh of mesh-SDPs? (Choose 2)

A.

STP can be used to break the loop.

B.

STP is not required to break the loop because of split-horizon rules.

C.

If the traffic is primarily multicast, a full mesh of SDPs is a simple and efficient design.

D.

If the traffic is primarily Unicast, a full mesh of SDPs is a simple and efficient design.

How is MAC learning achieved in traditional Ethernet switches?

A.

As frames leave the switch, the DA is populated into the FDB.

B.

As frames enter the switch, the DA is populated into the FDB.

C.

As frames leave the switch, the SA is populated into the FDB.

D.

As frames enter the switch, the SA is populated into the FDB.

The following question relates to this command syntax: "config>service# vpls 9000 customer 6 create". Which of the following statements are correct? (Choose 2)

A.

The customer-id in this command is 9000.

B.

The service-id in this command is 9000.

C.

This value 9000 should be unique across the network as a best practice.

D.

The vc-id will be 6 for the service by default.

E.

The egress vc-label will be 9000.

A customer has requested a VPLS service. The customer is using dot1q encapsulation and they have requested that all vlan tags be transparently passed. Which two SAP IDs will accept VLAN tags and pass them transparently? (Choose 2)

A.

sap 1/1/1

B.

sap 1/1/1:0*

C.

sap 1/1/1:0

D.

sap 1/1/1:*

How do user VPLSs become associated with a management VPLS for redundant spoke-sdp connections?

A.

The association must be defined in the user VPLS service.

B.

The association is done when the user VPLS is associated with the same sdp-id in the management VPLS

C.

The association is based on service IDs.

D.

The association is based on customer IDs.

To reduce the amount of flooding between PE devices which of the following steps should be taken?

A.

Configure the local age timer to be larger.

B.

Configure the local age timer to be lower.

C.

Configure the remote age timer to be larger.

D.

Configure the remote age to be lower.

Which command will display the Route Target associated to a specific prefix on an Alcatel-Lucent 7750 SR?

A.

Show router bgp routes

B.

Show router bgp routes detail

C.

Show router route-table

D.

Show router route-table

E.

Either (b) or (d)

When configuring a VPRN service on an Alcatel-Lucent 7750 SR, where should the following policy be applied?

A.

On the CE under the RIP context

B.

On the PE under the BGP context

C.

On the PE under the RIP context

D.

On the CE under the BGP context

E.

This policy is not required

Which of the following is a characteristic of inter-AS model C VPRN?

A.

A data packet destined to a remote AS is encapsulated with three labels within the originating AS.

B.

The ASBR redistributes VPN-IPv4 updates to its ASBR eBGP peers.

C.

PE routers in different ASes exchange IPv4 routes directly between each other using eBGP.

D.

The advertising ASBR assigns a new label to the route before sending it via an MP-eBGP update to its ASBR peer.

Click the exhibit.

For the extranet VPRN and community lists shown, which of the following communities will be included in the export policy applied to VPRN 20 on router R2?

A.

"Blue-Only"

B.

"Blue-Only" and "Blue-Green"

C.

"Green-Only"

D.

"Extranet-VPN-Green"

E.

"Blue-Green"

Click the exhibit.

What is wrong with the VPRN configuration applied on this Alcatel-Lucent 7750 SR?

A.

The VPRN ID must match the value used in the vrf-target command.

B.

The VPRN ID must match the value used in the route-distinguisher command.

C.

The router-id command should not be used in this context.

D.

The "no shutdown" command must be configured for the VPRN to be operationally UP.

Click the exhibit.

Community lists are configured for the PE hub and spoke VPRN. Which communities should be exported by the VPRN service on PE1?

A.

"Spoke.Sites" and "Hub_Site"

B.

"Spoke_Sites"

C.

"Hub_Site"

D.

No communities should be exported

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier offering VPRN services. Which of the following configuration steps is NOT required?

A.

Creating an export policy on CSC-CE1 and CSC-CE2 to advertise local PE addresses to the network provider.

B.

Configuring eBGP between CSC-CE and CSC-PE routers; setting the address family to IPv4; and enabling the advertisement of labels for IPv4 routes.

C.

Configuring iBGP between PE and CSC-CE within each customer carrier site; setting the address family to IPv4; and enabling the advertisement of labels for IPv4 routes.

D.

Configuring MP-iBGP between PE1 and PE2; setting the address family to IPv4; and enabling the advertisement of labels for IPv4 routes.

Complete the following statement. In a VPRN, the label signaled by RSVP-TE is used to ______________.

A.

Identify the egress PE in the MPLS domain

B.

Signal the egress VPRN ID

C.

Identify the ingress PE in the MPLS domain

D.

Transport route updates between PEs

Click the exhibit.

PE3 learns Internet routes via its VRF interface to the Internet peering router and stores them in its Internet VRF. CE1 is connected to the Red VPN and requires Internet access via its Red VRF interface. Which of the following statements do not fulfill this requirement?

A.

PE1 advertises the Red VPN routes and a default route to PE3.

B.

The Internet VRF on PE3 imports the Red VPN routes advertised by PE1.

C.

PE1 imports all Internet routes and advertises them to CE1 via the Red VRF.

D.

PE3 advertises a default route from its Internet VRF instead of advertising all Internet routes.

Which command is required in the blank line to complete the configuration shown below on an Alcatel-Lucent 7750 SR?

A.

Sap 1/1/1 create

B.

Sap 1/1/1 customer 10 create

C.

No shutdown

D.

Neighbor 192.168.1.2

Click the exhibit.

When configuring a VPRN service on an Alcatel-Lucent 7750 SR, where should the policy be applied?

A.

On the CE under the OSPF context

B.

On the PE under the BGP context

C.

On the PE under the OSPF context

D.

On the CE under the BGP context

E.

This policy is not required.

A customer has two sites connected to PE-1 and a third site dual-homed to PE-2 and PE-3. If BGP is used as the PE-CE protocol, what is the total number of BGP and MP-BGP sessions required on PE-1 for a functional VPRN service? Assume that route reflection is not used.

A.

0 BGP and 2 MP-BGP sessions

B.

2 BGP and 0 MP-BGP sessions

C.

2 BGP and 1 MP-BGP sessions

D.

2 BGP and 2 MP-BGP sessions

E.

1 BGP and 2 MP-BGP sessions

Click the exhibit.

Based on the displayed configuration, which routes does PE3 place in the VPRN 10 routing table?

A.

The routes learned from CE3 and PE1.

B.

The route learned from CE3 only.

C.

The routes learned from PE1 and PE2.

D.

The routes learned from CE3 and PE2.

Which of the following statements is true? Choose the best answer.

A.

A P router may forward customer packets to their destination without the presence of a route to that destination

B.

The ingress PE router may forward customer packets to their destination without the presence of a route to that destination

C.

The egress PE router may forward customer packets to their destination without the presence of a route to that destination

D.

Any provider core router (P or PE) may forward customer packets to their destination without the presence of a route to that destination

In a provider core consisting of 6 PE and 4 P routers, what is the minimum number of BGP sessions required in total for correct operation of VPRN services?

A.

0

B.

5

C.

10

D.

15

E.

45

In the output from an Alcatel-Lucent 7750 SR shown below, what does the highlighted text represent?

A.

The LDP identifier

B.

The Service identifier

C.

The Route Target

D.

The Route Distinguisher

E.

The tunnel label

Which of the following about a full mesh VPRN design is FALSE?

A.

Each customer site has a logically direct route to every other customer site.

B.

It provides optimal routing between all sites.

C.

It allows access between all CE devices and all sites participating in the same VRF.

D.

It requires a full BGP mesh in the provider core.

Click the exhibit.

For the Inter-AS model B VPRN, which of the following about the inter-as-label output on ASBR1 is TRUE?

A.

ASBR1 includes label 131069 in the route update sent to ASBR2.

B.

ASBR1 includes label 131068 in the route update sent to ASBR2.

C.

ASBR1 includes label 131068 in the route update sent to PEL

D.

ASBR1 includes labels 131068 and 131069 in the route update sent to ASBR2.

What command is required to configure the PE devices for a VPRN service on an Alcatel-Lucent 7750 SR?

A.

Family vpn-ipv4

B.

Family vprn-ipv4

C.

Family vprn

D.

Address-family vpn-ipv4

E.

Address-family vprn-ipv4

F.

Address-family vprn

Click the exhibit.

For the inter-AS model C VPRN, which of the following statements about a data packet sent from CE1 toCE2isTRUE?

A.

PE1 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.

B.

ASBR1 sends the data packet with one label: the BGP label.

C.

ASBR1 sends the data packet with one label: the service label.

D.

ASBR2 sends the data packet with three labels: the bottom label is a service label, the middle label is a BGP label, and the top label is an LDP label.

When using the AS-override method to prevent BGP loops in VPRNs, where should the "as-override" CLI command be configured?

A.

On the PE facing the CE neighbor

B.

On the CE facing the PE neighbor

C.

On the P facing the PE neighbor

D.

On the PE facing the PE neighbor

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