Nokia Nokia Certifications 4A0-103 Questions & Answers

• Question 171:

  Click on the exhibit button below.

  

  Consider the output shown; why is the label in bold font not in use?

  A. The router cannot do a SWAP of this label.

  B. The label does not match the egress label for the same FEC.

  C. The label is for a FEC for which the next-hop is the peer router

  D. The label was signaled in error.

  Correct Answer: C

• Question 172:

  How does MPLS-TE overcome the issue of IP hyper-aggregation?

  A. By enabling the creation of LSPs across alternate links to balance the network traffic.

  B. By eliminating the requirement for core IP routing.

  C. By not allowing more than one LSP to use a particular path.

  D. By defining multiple LSPs across a network and implementing an IGP load balancing algorithm across them.

  Correct Answer: A

• Question 173:

  Click on the exhibit button.

  

  The policy on router R2 is applied as an LDP export policy. What FECs now appear in router R2's LIB?

  A. Local FECs, not including those in the 192.168.1.0/24 address space.

  B. Only system ID FECs may appear 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 174:

  LDP is enabled on both ends of a point-to-point link, but the "show router Idp status" command indicates that LDP is operationally down. The Oper Down Reason field shows the message "systemIpDown." What might cause this condition?

  A. The LSP is in the administrative down state.

  B. The router's router ID overlaps another.

  C. The router's interfaces do not have LDP running.

  D. The router's system interface requires an IP address

  Correct Answer: D

• Question 175:

  Which of the following are characteristics of ECMP LSPs in LDP? Choose three answers

  A. Liberal label retention mode

  B. T-LDP enabled with peers to which load balancing is desired.

  C. ECMP enabled in the config>router context.

  D. Hashing used to select the egress label.

  E. Export policy applied to advertise multiple labels for a given FEC.

  Correct Answer: ACE

• Question 176:

  Which of the following are top level TLV types defined for OSPF-TE? Choose two answers.

  A. Router address

  B. Traffic engineering metric

  C. Maximum bandwidth

  D. Link

  E. Admin Group

  Correct Answer: AD

• Question 177:

  In MPLS, how is the label range 0 ?15 used?

  A. Static LSPs

  B. Reserved use

  C. Vendor proprietary use

  D. Management LSPs

  E. Dynamic LSPs

  Correct Answer: B

• Question 178:

  Which of the following can be used for label signaling and distribution on the Alcatel-Lucent 7750 SR? Choose two answers

  A. RSVP-TE

  B. TDP

  C. LDP

  D. ADP

  E. MPLS-TE

  Correct Answer: AC

• Question 179:

  Which of the following statements regarding per-platform label space are true? Choose two answers.

  A. A separate label is used for each interface that the FEC is advertised on.

  B. It uses fewer label resources than a per-interface label space.

  C. It is typically used when the device has ATM or Frame Relay interfaces.

  D. It uses more label resources than a per-interface label space.

  E. A single label may be assigned to an FEC and used across all interfaces of the same router.

  F. It is only valid when the LDP peers are directly connected over an interface, and the label is only going to be used for traffic sent over that interface.

  Correct Answer: BE

• Question 180:

  Which of the following is described by the following statement? An LSR propagates a label mapping only for an FEC for which it has a label mapping for the FEC next-hop.

  A. Independent control mode.

  B. Ordered control mode.

  C. Liberal label retention.

  D. Conservative label retention.

  E. Downstream on demand

  Correct Answer: B