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Free 4A0-105 Exam Braindumps
4A0-105 Virtual Private LAN Services Questions 86–90 (page: 19)

Updated On: 9-Feb-2026
Page 19 of 40
PDF with 193 Questions

Why should you configure send-flush-on failure on your PE routers when using active/standby pseudowires?

  1. It flushes the local FDB speeding recovery
  2. It discards all packets in the queue and sends icmp-discad messages to the sender. The packets are re-transmitted resulting in no loss of data.
  3. On failure, the PE sends an LDP flush-all-from-me message to all PE devices in the VPLS. This speeds convergence to the new topology.
  4. It is not important to use send-flush-on-failure as Active/Standby signalling automatically converges the FDB in all VPLS instances

Answer(s): C



Which physical topology is NOT commonly deployed in today's VPLS networks?

  1. Ring topologies.
  2. Metro-to-metro topologies
  3. H-VPLS topologies.
  4. Partial-mesh topologies.

Answer(s): D



Which of the following is a function of the data plane that must be considered when provisioning a VPLS service?

  1. Number of LSPs.
  2. Number of TLDP sessions.
  3. Number of SDPs.
  4. MAC address consumption in the FDB.
  5. Bandwidth and replication requirements.

Answer(s): E



Click on the exhibit below.


Given the following configuration, which service type will VPLS 1 and VPLS 100 be displayed as with the "show service service-using" command?

  1. VPLS 1 will be displayed as mVPLS and VPLS 100 will be displayed as VPLS.
  2. VPLS 1 will be displayed as mVPLS and VPLS 100 will be displayed as uVPLS
  3. VPLS 1 will be displayed as VPLS and VPLS 100 will be displayed as VPLS.
  4. VPLS 1 will displayed VPLS and VPLS 100 will be displayed as uVPLS.

Answer(s): A



Click on the exhibit below.


If the device connected to PE-A in Metro A sends a frame to PE-A that requires replication within the VPLS which devices is PE-A responsible for replicating the frame to?

  1. PE-A must replicate the frame to all devices participating in the VPLS
  2. PE-A must replicate the frame to all PEs within Metro A
  3. PE-A must replicate the frame to all devices in the Metro A
  4. All of the above

Answer(s): B



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