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Alcatel-Lucent Virtual Private LAN Services (4A0-105) - Alcatel-Lucent Exam Questions

Last updated on June 20, 2026

97% Exam Compliance
156 Total Questions
1
Question
What option is available when using PBB to reduce the amount of required VPLS services?
Options
A The Alcatel-Lucent 7750 SR supports the mapping of multiple, standard VPLS services to B-VPLS services.
B The Alcatel-Lucent 7750 SR supports 1:1 mapping of I-VPLS services to B-VPLS services.
C The Alcatel-Lucent 7750 SR supports 1:1 andM:1 mapping of l-VPLS services to B- VPLS services.
D The Alcatel-Lucent 7750 SR supports the mapping of multiple, standard VPLS services to l-VPLS services.
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2
Question
How many designated ports are there in a spanning tree topology?
Options
A The same as the number of alternate ports in the topology
B The same as the number of root ports
C 1 per switch
D 1 per segment
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3
Question
A LAG is configured with LACP passive mode enabled. When will LACP packets be sent?
Options
A Every 1 second.
B On initialization and then every hello-interval.
C Only after receiving LACP packets.
D Never.
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4
Question
Which of the following are true when ports are configured with the IEEE 802.3ah Loopback Control feature? (Choose 3)
Select 3
Options
A When a port is in loopback mode, service mirroring will still work if it is a mirror-source or mirror- destination.
B All packets, except for information PDUs, are looped back.
C Both ports must rediscover the OAM capabilities of each other once the port is put back into
service.
D The loopback control PDU instructs the remote port to enter loopback mode.
E Both ports must still send Information PDUs to avoid going back to discovery mode.
F Putting a port in loopback does not affect customer data flow
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5
Question
What are the advantages of running a physical ring topology with a mesh of mesh-SDPs? (Choose 2)
Select 2
Options
A If the traffic is primarily multicast, a full mesh of SDPs is a simple and efficient design.
B STP can be used to break the loop.
C If the traffic is primarily Unicast, a full mesh of SDPs is a simple and efficient design.
D STP is not required to break the loop because of split-horizon rules.
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