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Q21. Which of the following statements is true of an established LDP session?
A. It uses a UDP connection with an arbitrary port number.
B. It uses a UDP connection with well known port number 646.
C. It uses a TCP connection with an arbitrary port number.
D. It uses a TCP connection with well known port number 646.
Answer: D
Q22. 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?
A. CSPF looks for the delta bandwidth, taking down the first path if necessary.
B. CSPF looks for the delta bandwidth, implementing make-before-break.
C. After 5 failed attempts to find the bandwidth requested, the head end disables the LSP.
D. CSPF looks for the entire bandwidth requested, implementing MBB.
Answer: B
Q23. 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
Answer: B
Q24. 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
Answer: B
Q25. Which of the following statements best defines an LSP?
A. An LSP is a bidirectional path across the MPLS domain.
B. An LSP is a bidirectional path for a particular FEC across the MPLS domain.
C. An LSP is a unidirectional path across the MPLS domain.
D. An LSP is a bidirectional path between adjacent LSRs.
E. An LSP is a unidirectional path between adjacent LSRs.
Answer: C
Renewal 4A0-103 free exam:
Q26. Which of the following routing protocols are supported on the Alcatel-Lucent 7750 SR to enable constraint-based LSPs? (Choose two)
A. RIPv2-TE
B. CSPF
C. OSPF-TE
D. ISIS-TE
E. RSVP-TE
Answer: C,D
Q27. Which of the following statements regarding DiffServ-TE LSPs is true?
A. The Maximum Allocation Model (MAM) provides the most efficient bandwidth utilization model
B. In the Maximum Allocation Model (MAM), each CT receives dedicated bandwidth constraints.
C. In the Russian Doll Model (RDM), a CT2 LSP automatically preempts a CT1 LSP.
D. Using the Russian Doll Mode! (RDM), a CT1 LSP may use unreserved CTO bandwidth.
Answer: B
Q28. Which of the following statements regarding the MPLS SWAP label operation is true?
A. The inner label will be exchanged with the MPLS outer label.
B. The inner label will be exchanged for a new label.
C. The outer label will be exchanged for a new label.
D. All labels will be exchanged for one new label.
E. All labels will be exchanged for an equal number of new labels.
Answer: C
Q29. Which of the following devices can originate an opaque LSA?
A. TE enabled OSPF routers
B. Backbone router only
C. ABR only
D. ASBR only
Answer: A
Q30. Which of the following are features of RSVP-TE? Choose three answers.
A. It supports IGP-based LSPs.
B. It supports constrained path LSPs.
C. It does not support loose explicit path LSPs.
D. It is recommended for use in Traffic Engineering applications.
E. It cannot be used with facility backup fast reroute.
Answer: A,B,D