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Free Nokia 4A0-C02 Practice Exam with Questions & Answers | Set: 12

Questions 166

When a PE node receives a PBB encapsulated frame on a B-VPLS, how does the PE determine which l-VPLS it belongs to?

Options:
A.

The l-TAG in the l-SID is inspected to determine where the frame should be delivered.

B.

When the B-MAC header is stripped the customer MAC address is then looked up in the FDB

C.

The l-SID in the l-TAG is inspected to determine where the frame should be delivered.

D.

The PE inspects the service label in the MPLS header before stripping the B-MAC header.

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Questions 167

If the command "disable-learning" has been added at the VPLS level, then MAC entries which have already been learned will not be aged.

Options:
A.

TRUE

B.

FALSE

Questions 168

The operation of a VPLS can be best described by which of the following statements?

Options:
A.

A frame should be sent to the PE that connects to the target site whenever possible.

B.

A frame should be flooded as little as possible.

C.

Customer frames should be switched based on the destination MAC address.

D.

All of the above.

E.

Only (a) and (b) are true.

Questions 169

An l-VPLS can be associated with many B-VPLS services.

Options:
A.

TRUE

B.

FALSE

Questions 170

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

Options:
A.

4094

B.

8190

C.

32768

D.

131071

Questions 171

Click on the exhibit below.

4A0-C02 Question 171

Study the diagram shown. What consideration should be given to the transport tunnel of SDP 300?

Options:
A.

The SDP must be configured to use GRE encapsulation.

B.

The SDP must follow the same path as the user's SDP.

C.

The SDP should be configured to use an RSVP signaled transport with fast reroute.

D.

The SDP must be the same as the user's SDP.

Questions 172

How many designated ports are there in a spanning tree topology?

Options:
A.

The same as the number of alternate ports in the topology

B.

1 per segment

C.

The same as the number of root ports

D.

1 per switch

Questions 173

What are the limitations of a traditional layer 2 switch? (Choose 3}

Options:
A.

Isolates collision domains.

B.

Requires layer 2 loop prevention.

C.

Slow response to topology changes.

D.

Limited to 4094 vlans per switch.

E.

Increased flooding.

Questions 174

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

Options:
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.

Questions 175

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

Options:
A.

Yes

B.

No

Questions 176

Multiple VPLS services can be offered over the same set of LSP tunnels?

Options:
A.

TRUE

B.

FALSE

Questions 177

How does the IEEE 802.1ag loopback function differently from the loopback feature in 802.3ah? (Choose 2)

Options:
A.

Theloopbackfuntionin802.1ag is an intrusive test that will stop customer data.

B.

The loopback function of 802.lag is a non-intrusive "ping" sent from a MEP to a remote MEP or MIP.

C.

The loopback function in 802.3ah is an intrusive test that will loop customer data.

D.

The loopback function of 802.lag is an intrusive test that will "loop" all customer data back to the original sender.

Questions 178

MC-LAG is only supported on network ports.

Options:
A.

TRUE

B.

FALSE

Questions 179

What is the default remote-age timer of a B-VPLS?

Options:
A.

The same timer is used in all VPLS types.

B.

Higher than the default timer of an I-VPLS.

C.

Lower than the default timer of an l-VPLS.

D.

The same timer as an l-VPLS.

Questions 180

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

Options:
A.

oam mac-populate

B.

oam mac-ping

C.

oam mac-trace

D.

oam svc-ping

E.

oam cpe-ping

Exam Code: 4A0-C02
Certification Provider: Nokia
Exam Name: Nokia SRA Composite Exam
Last Update: Jul 19, 2025
Questions: 639

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