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Alcatel-Lucent 4A0-105 Exam
4A0-105 Virtual Private LAN Services (Page 2 )

Updated On: 12-Jan-2026
Page 2 of 49
PDF with 193 Questions

Which of the following technologies allows for two explicit VLAN tags to be received from a customer device?

  1. RSVP-TE
  2. SP-VLAN
  3. QinQ
  4. Dot1Q

Answer(s): C



What is the SA in the Ethernet frame used for by a layer 2 switch?

  1. MAC learning
  2. SA filtering
  3. Routing table population
  4. Frame forwarding

Answer(s): A



What are the limitations of a traditional layer 2 switch? (Choose 3}

  1. Isolates collision domains.
  2. Requires layer 2 loop prevention.
  3. Slow response to topology changes.
  4. Limited to 4094 vlans per switch.
  5. Increased flooding.

Answer(s): B,C,D



Which of the following statements about the VC-ID is false?

  1. The vc-id is signaled in the control plane.
  2. The vc-id is part of the data plane encapsulation.
  3. There is a vc-id to vc-label mapping.
  4. The vc-id has point to point significance.

Answer(s): B



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