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Free 4A0-103 Exam Braindumps

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Consider the following:
- Router R2 is an ABR in OSPF Areas 0 and 1.
- Router R2 advertises the aggregate prefix 10.10.10.0/24 into Area 1.
- Router R1 in Area 0 generates LDP labels for FECs 10.10.102/31 and 10.10.10.4/31

Router R3 in Area 1 places these FECs in its LIB, but it does not place them in its LFIB. What can you do on router R3 to make it populate these labels in its LFIB?

  1. Disable route summarization on router R3
  2. Enable LDP aggregate prefix match
  3. Create an import policy to accept these FECs
  4. Disable LDP exact match on the specified FECs

Answer(s): B



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 approach to LSP path diversity provides the most control, but the least flexibility?

  1. Administrative Groups
  2. Shared Risk Link Groups
  3. Strict hop LSP paths
  4. Fast reroute

Answer(s): C



If an Alcatel-Lucent 7750 LSR receives a labeled packet with a outer label TTL of 250 and an inner label TTL of 251, which of the following statements is true?

  1. The packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 250.
  2. The packet will be label switched; the outer label TTL will be 249 and the inner label TTL will be 251.
  3. The packet will be label switched; both the outer label TTL and the inner label TTL will be 250.
  4. The packet will be label switched; both the outer label TTL and the inner label TTL will be 249, because they must be the same.

Answer(s): B






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