Question 1

Click on the exhibit below. 4-A0-105-page64-image17 In the following diagram, traffic ingressing on SAP 1/2/3:1 will be passed to the layer-2 DPI device for inspection based on a filter policy applied to the ingress of the SAP. What feature should be enabled on SAP 1/2/1:100 and SAP 1/2/2:100 to ensure that incorrect information is not populated in the FDB of VPLS 1?

Options :

A : Learning should be disabled on both SAPs connected to the DPI device to prevent FDB instability

B : A MAC filter should be applied to both SAPs connected to the DPI to limit MAC learning on the port

C : An IP filter should be applied to both SAPs connected to the DPI to prevent FDB instability

D : The SAPs connected to the DPI should be configured with the "discard-unknown" feature to limit MAC learning on the port

Answer: A

Question 2

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

Options :

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.

Answer: B

Question 3

Click on the exhibit below. 4-A0-105-page64-image32 Assume PE-B expects avian tag as part of the RFC 4762 (Martini) encapsulation. How must PE-A be configured?

Options :

A : The port that the SAP belongs to must have the correct ether type configured.

B : The SAP must be configured with the right VLAN tag

C : The SDP VC type must be configured as type VLAN and the correct vlan-vc-tag must be specified

D : All of the above.

Answer: C

Question 4

What configuration is required on the CE device when using MC-LAG?

Options :

A : The CE must be configured with an MC-LAG to both PE devices.

B : The CE must be configured with LACP in active mode.

C : There is no configuration required on the CE.

D : The CE must be an Alcatel-Lucent 7750 SR.

Answer: B

Question 5

Consider a large metro-to-metro VPLS network interconnected with a mesh of mesh-SDPs. Which of the following statements does NOT apply to this situation?

Options :

A : Bandwidth and replication inefficiency can occur on inter-metro links if there is a lot of multicast traffic

B : The number of control sessions grows exponentially in a fully meshed network

C : Spanning-tree is required to prevent loops when using mesh SDPs on the inter-metro links.

D : Network touches increase with each node added to the mesh.

Answer: C

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