4A0-115

4A0-115 practice questions, page 2 of 2, with answer review and explanations.

Question 6

Based upon the exhibit, which of the following statements about the forwarding of BUM traffic is FALSE?

  1. PE3 replicates the traffic and sends it to all PEs in its VPLS 1 flooding list.
  2. PE3 adds an ESI label to packets forwarded to PE1 because PE1 is connected to the same Ethernet segment.
  3. PE1 forwards the traffic received from PE3 to CE1, and CE1 discards it based upon the ESI label.
  4. PE2 decapsulates the packets received from PE3 and forwards the frames to CE2.

Question 7

In the exhibit MAC1 moves from PE1 to PE2. Which of the following actions related to this MAC address mobility is performed?

  1. CE1 generates an update message to PE1 withdrawing its MAC.
  2. PE1 generates an update message to remote PEs identifying the new location of CE1.
  3. PE2 advertises a MAC/IP route for MAC1 with a sequence number higher than that received from PE1.
  4. PE3 waits to receive a data packet from CE1 to update its FDB entry for MAC1.

Question 8

What are EVPN inclusive multicast Ethernet tag (IMET) routes used for?

  1. To advertise the MAC or MAC/IP addresses of locally-learned hosts
  2. To advertise the redundancy mode of a local Ethernet segment
  3. To discover all PEs participating in the same VPLS service
  4. To discover all PEs attached to the same Ethernet segment