Nokia 4A0-103 Online Practice Questions and Exam Preparation

Nokia 4A0-103 Online Questions & Answers

• Question 131:

  Which of the following describes constraint-based routing?

  A. A mechanism that implements opaque LSAs.
  B. A mechanism that computes routes based on specified requirements.
  C. A mechanism that ensures the IGP best route is used.
  D. A mechanism that enables LDP signaling to use a route other than the IGP best route.
  B. A mechanism that computes routes based on specified requirements.

• Question 132:

  Which of the following regarding MPLS label value assignment is FALSE?

  A. Label values may be dynamically assigned by LDP.
  B. Label values may be dynamically assigned by RSVP-TE.
  C. Label values may be reserved for special uses.
  D. Label values may be dynamically assigned by IGP.
  D. Label values may be dynamically assigned by IGP.

• Question 133:

  How have Traffic Engineering extensions to IS-IS been implemented?

  A. By defining new LSAs for the IS-IS protocol.
  B. By utilizing the OSPF opaque LSAs to maintain interoperability with OSPF routing domains
  C. By defining new TE extension TLVs to the IS-IS protocol.
  D. By enabling CSPF algorithm extensions that allow link state TE to be implemented.
  C. By defining new TE extension TLVs to the IS-IS protocol.

• Question 134:

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

  A. The MPLS TTL values are incremented at each request.
  B. The router uses MPLS Echo Request packets that are IP-routed.
  C. The router collects hop information along the tunnel's path.
  D. The router performs an unidirectional LSP test.
  B. The router uses MPLS Echo Request packets that are IP-routed.

• Question 135:

  Which of the following best describes downstream unsolicited label distribution?

  A. An LSR may answer requests for label mappings immediately, without waiting for a label mapping from the next-hop.
  B. An LSR may advertise label mappings to all peers for which it might be a next-hop for a given FEC.
  C. An LSR propagates a label mapping downstream for a FEC, only if it has a label mapping for the FEC next-hop.
  D. An LSR will only distribute a label for a FEC when it has been requested to do so.
  B. An LSR may advertise label mappings to all peers for which it might be a next-hop for a given FEC.

• Question 136:

  Click on the exhibit.

  

  The link between routers R4 and R6 is down before the LSP is signaled. CSPF is enabled on the LSP. Which of the following conditions is TRUE?

  A. Router R1 sends a PATH message and router R4 sends back a PATH Error message.
  B. Router R1 does not send a PATH message because it detects an error.
  C. Router R1 sends a PATH message and router R4 sends back a PATH Tear message.
  D. Router R1 sends a PATH message and router R4 sends back a RESV Error message.
  B. Router R1 does not send a PATH message because it detects an error.

• Question 137:

  What is the common usage of the MPLS EXP bits?

  A. Each implementation can use them as they see fit.
  B. They are used to carry the Ethertype value.
  C. They are used to carry the TTL value.
  D. They are used to carry QoS classification.
  E. They are used to carry fragmentation flag information
  D. They are used to carry QoS classification.

• Question 138:

  Which of the following about label modes on the Alcatel-Lucent 7750 SR is FALSE?

  A. RSVP uses downstream on demand label distribution mode.
  B. LDP uses conservative label retention mode.
  C. LDP advertises label mappings to all peers for which it might be a next-hop for a given FEC.
  D. RSVP distributes a label mapping for a FEC when it has been requested to do so.
  B. LDP uses conservative label retention mode.

• Question 139:

  Click on the exhibit.

  

  Why might router R2 have a Link LDP session to R1 (10.10.10.1:0) but not to R3 (10.10.10.3:0)?

  A. LDP is not configured on R2.
  B. R2 does not have a route to 10.10.10.3.
  C. LDP is not configured on R3's interface to R2.
  D. The targeted session is not configured on R2.
  C. LDP is not configured on R3's interface to R2.

• Question 140:

  Which of the following about RSVP-TE on an Alcatel-Lucent 7750 SR is TRUE?

  A. Label bindings are distributed to other routers when explicitly requested.
  B. Label bindings are distributed to all neighbors including non-downstream routers.
  C. Label bindings are distributed if labels have not been received from downstream routers.
  D. All labels received from downstream neighbors are stored in the LIB.
  A. Label bindings are distributed to other routers when explicitly requested.