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NO.1 What is the function of the MPLS label assigned to a packet?
A. It identifies the FEC.
B. It specifies the packet's header length
C. It identifies the origin of the packet.
D. It specifies the type of data contained in the packet
Answer: A
NO.2 An Alcatel-Lucent 7750 SR has its TE update threshold enabled with the up threshold set to
40%. The maximum reservable bandwidth on the link is 200M and 30M have already been reserved.
When will a TE update be sent on this link?
A. When the reserved bandwidth goes above 80M.
B. When the reserved bandwidth goes above 40M.
C. When an additional 80M bandwidth is reserved.
D. When an additional 40M bandwidth is reserved.
Answer: A
NO.3 Which default LDP parameter are you able to change with CLI?
A. Label space mode
B. Label retention
C. Control mode
D. Keepalive factor
Answer: D
NO.4 Which MPLS label mode saves label mappings received from all peer LSRs?
A. Conservative label retention
B. Liberal label retention
C. Downstream on demand
D. Downstream unsolicited
Answer: B
NO.5 Which of the following statements is true when the implicit null is implemented?
A. The penultimate router will POP the top label from the packets.
B. The eLER will receive packets with a top label value of 3.
C. The eLER will receive packets with a top label value of 0.
D. The penultimate router will always receive unlabeled packets.
E. The penultimate router performs a double lookup on the packet.
Answer: A
NO.6 Which of the following statements regarding LSP path configuration are true? (Choose three)
A. The path must include at least one hop.
B. The path may be used multiple times in a single LSP .
C. The path may comprise loose hop entries only.
D. The path must define the LSP's tail end.
E. The path may be used for multiple LSPs.
Answer: C,E
NO.7 Fill in the blanks: A ________device has all interfaces inside the provider domain, and a
_______ device has at least one interface outside the provider domain.
A. PE, P
B. P , PE
C. PE, CE
D. CE, PE
E. CE, P
Answer: B
NO.8 Click on the exhibit.
This policy is applied on a router as an LDP export policy and an LDP session has been established
between this router and its neighboring router. In addition to the FECs learned from its neighbors,
what additional FECs will appear in this router's LIB?
A. All FECs that are in the 192.168.1.0/ 24 address space.
B. Local FECs that are in the 192.168.1.0/ 24 address space.
C. All FECs that are not in the 192.168.1.0/ 24 address space.
D. All FECs except the local FECs that are in the 192.168.1.0/ 24 address space.
Answer: B