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4A0-C02 Practice Questions

Nokia SRA Composite Exam

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Question # 41

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.

Discussion 0
Question # 42

The "discard-unknown" command has been enabled at the VPLS level. Which of the following statements is true? (Choose 2)

Options:

A.  

Broadcast traffic will be flooded.

B.  

If the unicastSA has not been learned in the FDB, the frame will be dropped.

C.  

If the unicast DA has not been learned in the FDB, the frame will be dropped.

D.  

All traffic will be dropped, including multicast and broadcast.

E.  

Broadcast traffic will be dropped.

Discussion 0
Question # 43

An MC-LAG is configured with default parameters. When a failed interface recovers, the active link reverts to the restored interface.

Options:

A.  

TRUE

B.  

FALSE

Discussion 0
Question # 44

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.

Discussion 0
Question # 45

Click on the exhibit below.

Question # 45

A new router named PE-D is to be directly connected to PE-C and is required to be added to the existing VPLS 300. The design requires the least amount of signaling, the least amount of configuration changes for existing sites and the new site has to have access to all existing sites. How should the new site be added to VPLS 300?

Options:

A.  

Configure a mesh-sdp between all existing PE routers and the new PE router

B.  

Configure a mesh-sdp between PE-C and PE-D

C.  

Configure a spoke-sdp between PE-C and PE-

D.  

D.  

It is not possible to meet the design requirements.

Discussion 0
Question # 46

Click on the exhibit below.

Question # 46

Given the following output what is the most likely reason the SDP binding is operationally down? (Choose 2)

Options:

A.  

The sdp id is different on the far-end.

B.  

LDP is disabled on the far-end.

C.  

The vc-id is different on the far-end.

D.  

The mesh-sdp is missing on the far-end.

E.  

The mesh-sdp is administratively shutdown on PEL

F.  

There is an MTU mismatch.

Discussion 0
Question # 47

Which of the following needs to be considered when designing Ethernet networks with redundancy?

Options:

A.  

Processing the TTL takes extra time.

B.  

MAC learning rate is doubled.

C.  

FDB size is doubled.

D.  

Requires a protocol to remove loops.

Discussion 0
Question # 48

Click on the exhibit below.

Question # 48

A new site is added to PE-D of Metro

B.  

Which of the following statement below is true?

Options:

A.  

If a spoke-SDP is configured between the new site and PE-D no further SDPs will be required.

B.  

If a mesh- SDP is configured between the new site and PE-D no further SDPs will be required.

C.  

A mesh- SDP must be configured between the new site and all other PEs within Metro

B.  

D.  

A spoke- SDP must be configured between the new site and all other PEs within Metro

B.  

Discussion 0
Question # 49

Click the exhibit.

Question # 49

For the inter-AS model A VPRN. BGP is used as the PE-CE routing protocol. Which of the following statements about the control plane operation is TRUE?

Options:

A.  

PE1 sends an IPv4 update for prefix 192.168.1.0/27 via MP-BGP to ASBR1.

B.  

ASBR1 sends an IPv4 update for prefix 192.168.1.0/27 to ASBR2.

C.  

ASBR1 transforms an IPv4 update for prefix 192.168.1.0/27 to a VPN-IPv4 route; allocates VPN label V1 and sends the update to ASBR2.

D.  

ASBR2 accepts a VPN-IPv4 update from ASBR1, then sends the update to PE2 via MP-BGP.

Discussion 0
Question # 50

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

Options:

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

Discussion 0
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