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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

Click on the exhibit below.

Which bridge will become the root bridge?

A.

Bridge B

B.

Bridge C

C.

Bridge D

D.

Bridge E

What is the DA address used for in the Ethernet Header?

A.

MAC learning

B.

SA filtering

C.

Routing table population

D.

Frame forwarding

After the "disable-learning" command has been executed at the VPLS level, a new client device originates a frame. What is the result?

A.

If the MAC address of this new client device does not reach the upper limit of the configured total number of MAC addresses allowed in the VPLS forwarding database, then the new MAC address will be stored.

B.

The new source MAC addresses will not be entered in the VPLS service forwarding database.

C.

New local source MAC addresses will not be entered in the VPLS service forwarding database, but new remote MAC addresses would continue to be entered.

D.

New remote source MAC addresses will not be entered in the VPLS services forwarding database, but new local MAC addresses would continue to be entered.

What type of SDP cannot be configured in an l-VPLS?

A.

Mesh-sdp

B.

Spoke-sdp

C.

MPLS

D.

GRE

Which failure scenario is NOT supported by IEEE 802.lag?

A.

Loss of connectivity.

B.

Unidirectional Loss.

C.

Loop detection.

D.

Merged Services.

E.

End-to-end bit error rates.

What action will be taken when an MPLS router receives a frame with a label that does not exist in the LFIB?

A.

The frame will be flooded.

B.

The frame will be discarded.

C.

The frame will be fragmented.

Click on the exhibit below.

Which port will become the alternate port?

A.

Bridge B 1/1/3

B.

Bridge B 1/1/2

C.

Bridge C 1/1/2

D.

Bridge C 2/1/1

E.

Bridge D 1/1/1

F.

Bridge D 1/1/3

G.

Bridge E 1/1/1

Click on the exhibit below.

If the device connected to PE-A in Metro A sends a frame to PE-A that requires replication within the VPLS which devices is PE-A responsible for replicating the frame to?

A.

PE-A must replicate the frame to all devices participating in the VPLS

B.

PE-A must replicate the frame to all PEs within Metro A

C.

PE-A must replicate the frame to all devices in the Metro A

D.

All of the above

Click on the exhibit below.

Assume there are two VPLS services configured on the MDU. How could load-balancing be achieved when using Active/Standby pseudowires?

A.

This cannot be done.

B.

Each VPLS will use the same pair of SDP's with the same endpoint configured with the option "load-balancing 2".

C.

Each VPLS will need their own pair of spoke-SDP's configured. The spoke-sdp's that are to be active should be configured with the option "precedence primary".

D.

Under the end-point configuration, enable load-balancing 2 and the MDU will load balance automatically.

What is the name of the feature supported on the Alcatel-Lucent 7750 SR that prevents MAC explosion in large VPLS deployments?

A.

H-VPLS

B.

M-VPLS

C.

PBB

D.

MC-EP

What is the maximum number of VLANs supported on a traditional Layer 2 switch?

A.

4094

B.

8190

C.

32768

D.

131071

Redundant spoke-SDPs are used between 2 Metro networks for redundancy. How can load balancing be achieved across the redundant spoke-SDPs?

A.

A single management VPLS using RSTP can be used to block different SDPs for different VPLS services.

B.

A single management VPLS using 802.1D-2004 can be used to block different SDPs for different VPLS services

C.

There is no way to have load balancing across redundant spoke-SDPs.

D.

Two management VPLS using RSTP can be used to block different SDPs for different VPLS services.

Which OAM tool can be used to dynamically learn the MAC address of a CE device connected to a SAP within a VPLS service?

A.

oam mac-populate

B.

oam mac-ping

C.

oam mac-trace

D.

oam svc-ping

E.

oam cpe-ping

Click on the exhibit below.

Based on the following output what will the vc-id be of any mesh-sdp bound to this service?

A.

9000

B.

1514

C.

1000

D.

100

Click on the exhibit below.

Based on the following configuration which VLANs will be managed by the management VPLS?

A.

VLANs 1-4094

B.

VLAN 0

C.

There is not enough information provided

D.

None, this is an invalid configuration

In Active/Standby pseudowires a failed pseudowire has recovered. Under what circumstances will the active pseudowire revert to the previously failed link?

A.

It will always revert to the previously failed link.

B.

It will never revert to the previously failed link.

C.

It will revert if the precedence of the previously failed link is set to 0 or "primary".

D.

It will revert if the precedence of the previously failed link is lower than the currently active link

What action will be taken when an Ethernet switch receives a frame with a known DA and an outer Ethertype value of 0x0800 on a dot1q encapsulated port?

A.

The frame will be forwarded out the port associated with the DA.

B.

The frame will be discarded.

C.

The frame will be flooded to all ports.

D.

The frame will be fragmented and forwarded out the port associated with the DA.

What is the MTU impact on the SDP path-mtu if fast reroute facilities-mode is implemented on the LSP?

A.

There will be no impact on the path-mtu.

B.

The path-mtu will decrease by4 bytes.

C.

The path-mtu will increase by 4 bytes.

D.

The path-mtu will decrease by 8 bytes.

E.

The path-mtu will increase by 8 bytes.

Click on the exhibit below.

Given the following configuration, which service type will VPLS 1 and VPLS 100 be displayed as with the "show service service-using" command?

A.

VPLS 1 will be displayed as mVPLS and VPLS 100 will be displayed as VPLS.

B.

VPLS 1 will be displayed as mVPLS and VPLS 100 will be displayed as uVPLS

C.

VPLS 1 will be displayed as VPLS and VPLS 100 will be displayed as VPLS.

D.

VPLS 1 will displayed VPLS and VPLS 100 will be displayed as uVPLS.

The service mtu of a VPLS is set to 9100. What is the recommended MTU value that can be set for the access port assuming dot1q encapsulation?

A.

9100

B.

9104

C.

9108

D.

9122

E.

9126

Click on the exhibit below.

Based on the output below which of the following statements is true?

A.

This Bridge is furthest from the Root Bridge within the VPLS mesh.

B.

This Bridge is the Root Bridge.

C.

SAP 1/1/1 is an Edge Port.

D.

This Bridge is closest to the Root Bridge within the VPLS mesh.

An l-VPLS is configured with a service id of 511. What will the value of the l-SID be assuming a default configuration?

A.

The 1-SID must be explicitly configured.

B.

The 1-SID only supports a range from 1 to 255.

C.

The 1-SID will default to 511 .the value of the service-id.

D.

Thel"SIDwilldefaultto131582, the value of the service-id + 131071.

What is the default service-mtu for a VPLS service?

A.

1500

B.

1514

C.

1518

D.

It depends on the access port MTU.

E.

It depends on the network port MTU.

What scaling factors should a network engineer be aware of when designing VPLS networks? (Choose 3)

A.

Control plane scaling.

B.

Data plane scaling.

C.

Network touches.

D.

Route table reduction.

E.

OAM tools.

Click on the exhibit below.

Which SDP on R3 will MAC addresses be associated with for devices behind R2?

A.

It depends if traffic is received via R4 or R1 from devices behind R2.

B.

The devices cannot communicate based on the configuration in the diagram so there will be no mac address association.

C.

Devices behind R2 will be associated with the sdp between R3 and R1.

D.

Devices behind R2 will be associated with the sdp between R3 and R4.

In RSTP, an alternate port is on the same switch as a designated Port.

A.

TRUE

B.

FALSE

Click on the exhibit below.

You have been requested to add load balancing across the redundant spoke-SDPs in the network shown. What further configuration is required? (Choose 2)

A.

An additional management VPLS.

B.

Another set of LSPs between PE1 and PE3 and between PE2 and PE4.

C.

Another set of SDPs between PE1 and PE3 and between PE2 and PE4.

D.

Load balancing has to be enabled within the management VPLS.

Which of the following statements regarding unicastand multicast frames is true for a traditional layer 2 switch? (Choose 2)

A.

Multicast frames only forward out ports that have a known receiver.

B.

Unicast frames only forward out ports that have a known receiver.

C.

If the FDB is empty, unicast and multicast frames are treated equally.

D.

If the FDB has an entry for the unicast frame, both unicastand multicast are treated equally.

RSTP blocks a spoke-sdp using a management VPLS. Is traffic affected on an ES using the same transport SDP?

A.

Yes

B.

No

MC-LAG provides link and node protection from an MDU to 3 or more PE devices.

A.

TRUE

B.

FALSE

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