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Exam : Alcatel-Lucent 4A0-103
Title : Alcatel-Lucent Multiprotocol Label Switching


1. Receiving labeled packets from the MPLS domain, removing the MPLS header and forwarding unlabeled packets outside the MPLS domain is the function of which device?
A. LER
B. LSR
C. PE
D. iLER
E. eLER
Answer: E

2. Which factor is a primary cause of IP hyper-aggregation?
A. IP routing protocols do not always select the best route to a destination
B. IP routing protocols always select multiple routes to a destination
C. IP routing protocols do not make use all available network attributes to select a path
D. Improper network design results in limited network path redundancy
Answer: C

3. Inspecting the MPLS header in the received packet and exchanging it for a new MPLS header is the function of which device?
A. iLER
B. LER
C. LSR
D. PE
E. eLER
Answer: C

4. Which of the following statements are true regarding the roles of devices in an MPLS domain? Choose 2 answers.
A. An LER is located internal to the provider domain and switches labeled packets
B. An LSR is located internal to the provider domain and switches labeled packets
C. An LSR is located at the boundary of the provider domain and may forward labeled or unlabeled packets
D. An LER is located at the boundary of the provider domain and may forward labeled or unlabeled packets
Answer: BD

5. Choose the answer that best completes the following statement. The device at the beginning of an LSP is referred to as the ____ while the device at the end of an LSP is referred to as the ____.
A. PE, P
B. LER, LSR
C. LSR, LER
D. iLER, eLER
E. eLER, iLER
F. P, PE
Answer: D