Free 4A0-C01 Exam Braindumps (page: 91)

Page 91 of 212

Why does IPv6 not use ARP?

  1. The ARP functionality has been replaced by the Neighbor Discovery protocol.
  2. The ARP functionality is not needed due to the increased IPv6 address space.
  3. ICMPv6 reduced its role to connectivity checking and auto-configuration only.
  4. ICMFV6 replaced the ARP functionality with Multicast Listener Discovery (MLD).

Answer(s): A



Which of the following statements best defines an LSP?

  1. An LSP is a bidirectional path across the MPLS domain.
  2. An LSP is a bidirectional path for a particular FEC across the MPLS domain.
  3. An LSP is a unidirectional path across the MPLS domain.
  4. An LSP is a bidirectional path between adjacent LSRs.
  5. An LSP is a unidirectional path between adjacent LSRs.

Answer(s): C



An LSP path is configured as follows:
- Shared-explicit reservation style
- Make-before-break (MBB) enabled
- 500Mpbs bandwidth reserved on a 1Gbps link
With 100Mbps of unreserved bandwidth remaining, the operator increases the LSP-path's bandwidth reservation to 900Mbps. What happens to the existing LSP?

  1. CSPF looks for the delta bandwidth, taking down the first path if necessary.
  2. CSPF looks for the delta bandwidth, implementing make-before-break.
  3. After 5 failed attempts to find the bandwidth requested, the head end disables the LSP.
  4. CSPF looks for the entire bandwidth requested, implementing MBB.

Answer(s): B



Which of the following LDP messages are used in the successful establishment of LDP sessions? Choose three answers

  1. Label request message
  2. Notification message
  3. Address message
  4. Keepalive message
  5. Initialization message
  6. Hello message

Answer(s): D,E,F



Page 91 of 212



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