Nokia Nokia Certifications 4A0-103 Questions & Answers

• Question 131:

  Which of the following describes how a router sets the destination IP address for an RSVP RESV message?

  A. It sets the address to the system address of the head-end router.

  B. It sets the address to the next upstream hop from the ERO.

  C. It sets the address to the next upstream hop from the PSB.

  D. It sets the address to the next upstream hop from the RRO.

  Correct Answer: C

• Question 132:

  Which of the following about the RSVP-TE Hello protocol is FALSE?

  A. The Hello protocol can speed up convergence without reducing refresh time.

  B. Hello messages are sent after at least one RSVP session is active on the interface.

  C. An interface with multiple RSVP sessions sends Hello messages for each session.

  D. An RSVP neighbor is declared down if Hello messages are not received within the Hello timeout.

  Correct Answer: C

• Question 133:

  An Alcatel-Lucent 7750 SR enabled with LDP has multiple equal cost paths to a given FEC. After ECMP is enabled, which of the following is FALSE?

  A. The router has new entries added for the given FEC in its LIB.

  B. The router has new entries added for the given FEC in its FIB.

  C. The router generates a single label for the given FEC and advertises it to all its peers,

  D. The router has multiple LSP tunnels for the given FEC.

  Correct Answer: A

• Question 134:

  Two directly connected routers set different interface Hello timeout values. Router R1 uses 15 seconds, while router R2 uses 30 seconds. Which of the following best describes the LDP adjacency?

  A. The adjacency forms with the lower timeout value.

  B. The adjacency forms with the higher timeout value.

  C. The adjacency is in init state.

  D. The adjacency times out after 30 seconds.

  Correct Answer: A

• Question 135:

  Which of the following LDP message categories is UDP-based?

  A. Notification

  B. Session

  C. Discovery

  D. Advertisement

  Correct Answer: C

• Question 136:

  Which of the following are the default settings for the Alcatel-Lucent 7750 SR when using LDP?

  A. Per-platform label space, conservative retention mode

  B. Per-interface label space, conservative retention mode

  C. Per-platform label space, liberal retention mode

  D. Per-interface label space, liberal retention mode

  Correct Answer: C

• Question 137:

  Which of the following about T-LDP is FALSE?

  A. Link-based and T-LDP sessions may be configured on the same LSR.

  B. T-LDP supports sessions between non-directly connected devices.

  C. T-LDP can be configured between directly connected devices.

  D. T-LDP Hello messages are sent to a multicast address.

  Correct Answer: D

• Question 138:

  Click on the exhibit.

  

  This policy is applied as an LDP export policy. In addition to the FECs learned from its neighbors, which FECs now appear in the router's LIB?

  A. Local FECs not included in the 192.168.1.0/24 address space and the system IP FEC.

  B. Only the system IP FEC appears in the LIB.

  C. Any local FECs, except those with a 24-bit mask.

  D. Local FECs in the 192.168.1.0/24 address space.

  Correct Answer: A

• Question 139:

  Click on the exhibit.

  

  Router R2 advertises an OSPF summary route 10.10.10.0/24 into Area 1. Router R3 receives labels for individual FECs 10.10.10.2/32 and 10.10.10.4/32. These two FECs are installed in router R3's LIB but not in the LFIB. What needs to be done on router R3 to install these labels into its LFIB?

  A. Disable route summarization on router R3.

  B. Enable LDP aggregate prefix match.

  C. Create an import policy to accept 10.10.10.2/32 and 10.10.10.4/32.

  D. Disable LDP exact match on 10.10.10.2/32 and 10.10.10.4/32.

  Correct Answer: B

• Question 140:

  Which of the following about Alcatel-Lucent 7750 SR command "oam Isp-trace prefix" is FALSE?

  A. The router performs a unidirectional LSP test.

  B. The router collects hop information along the tunnel's path.

  C. The router uses MPLS Echo Request packets that are IP-routed,

  D. The MPLS TTL values are incremented at each request.

  Correct Answer: C