4A0-115 試験問題を無料オンラインアクセス

Which of the following statements about the EVPN Layer 2 Attributes extended community is FALSE?

• A.It specifies a P flag that indicates whether the advertising PE is a primary PE.
• B.It specifies the service maximum transmission unit (MTU).
• C.It is advertised with the auto-discovery per EVPN instance (A-D per EVI) route.
• D.It is applicable to EVPN VPLS services.

Examine the exhibit.

Which of the following actions is performed by PEI after it receives a BUM packet from CEI?

• A.PEI does not flood the packet because PEI is acting as non-designated forwarder (non-DF) for VPLS 10.
• B.PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE3.
• C.PEI sends the packet to PE2 but not to PE3 because PE3 is connected to the originating ES.
• D.PEI sends the packet to PE2 and to PE3. An ESI label is included only in the packet sent to PE2.

Examine the exhibit.

Which of the following configuration conditions is required for the proper operation of EVPN VPWS 2?

• A.The local AC tag ID and the remote AC tag ID configured on PE2 must match.
• B.The local AC tag ID configured on PE2 must match the local AC tag ID configured on PEI.
• C.The local AC tag ID configured on PEI must match the local AC tag ID configured on PE3.
• D.The remote AC tag ID configured on PE2 must match the remote AC tag ID configured on PE3.

Which of the following best describes the operation of a non-designated forwarder (non-DF) in a single-active Ethernet segment?

• A.Allows Tx unicast, blocks Rx unicast, allows Tx BUM, blocks Rx BUM
• B.Blocks Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
• C.Allows Tx unicast, allows Rx unicast, blocks Tx BUM, allows Rx BUM
• D.Blocks Tx unicast, blocks Rx unicast, blocks Tx BUM, blocks Rx BUM

In the exhibit, the interface-less forwarding model is used for the Layer-3 EVPN service. Which of the following statements about traffic forwarding from Host 1 to Host 2 is FALSE?

• A.PEI consults the FDB of RVPLS 1 and forwards the traffic to the local interface of VPRN 11.
• B.PE2 inspects the service label and determines that it is associated with RVPLS 2.
• C.PEI encapsulates the packet with two labels: an outer transport label and an inner service label.
• D.PE2 consults the FDB of RVPLS 2 and forwards the traffic to Host 2.