Alcatel-Lucent 4A0-105 問題集

質問 1：
An MC-LAG is configured with default parameters. When a failed interface recovers, the active link reverts to the restored interface.
A. FALSE
B. TRUE
正解：A

質問 2：
During the process of troubleshooting a VPLS problem the "oam mac-purge" command with "register" option was used to purge a MAC address from the FDB. Which of the following statements is true?
A. RelearningoftheMAC address that was purged can only be done once customer traffic resumes.
B. Relearningofthe MAC address that was purged can only be done with the "oam macpopulate" command.
C. Relearning of the MAC address that was purged can only be done with the "oam mac-
register" command.
D. Customer traffic destined to the MAC address that was purged will be dropped until the MAC address is relearned with the "oam mac-populate" command.
正解：B

質問 3：
How is MAC learning achieved in traditional Ethernet switches?
A. As frames leave the switch, the SA is populated into the FDB.
B. As frames enter the switch, the SA is populated into the FDB.
C. As frames enter the switch, the DA is populated into the FD
D. As frames leave the switch, the DA is populated into the FDB.
正解：B

質問 4：
What configuration is required on the CE device when using MC-LAG?
A. The CE must be configured with an MC-LAG to both PE devices.
B. There is no configuration required on the CE.
C. The CE must be an Alcatel-Lucent 7750 SR.
D. The CE must be configured with LACP in active mode.
正解：D

質問 5：
The following question relates to this command syntax: "config>service# vpls 9000 customer 6 create". Which of the following statements are correct? (Choose 2)
A. The vc-id will be 6 for the service by default.
B. The customer-id in this command is 9000.
C. This value 9000 should be unique across the network as a best practice.
D. The egress vc-label will be 9000.
E. The service-id in this command is 9000.
正解：C,E

質問 6：
Click on the exhibit below.

Which bridge will become the root bridge?
A. Bridge E
B. Bridge D
C. Bridge C
D. Bridge B
正解：A

質問 7：
What are the advantages of running a physical ring topology with a mesh of mesh-SDPs? (Choose 2)
A. If the traffic is primarily Unicast, 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 multicast, 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.
正解：A,D

質問 8：
Which of the following statements about Spanning Tree Protocol is true?
A. For the switches that are non-root or designated switches, the port with the highest combined cost to the root is the root port.
B. The switch port that is the greatest distance from the LAN to the root is the designated port.
C. In the case where two switches have the same priority, the switch with the lowest MAC address becomes the root.
D. All of the above.
正解：C

質問 9：
Fill in the blank for this next sentence. Flooded traffic received on any ____________in the service is replicated to other spoke SDPs and SAPs and not transmitted on any mesh SDPs.
A. Neither (a) nor (b) will make this sentence true.
B. Mesh SDP
C. Either (a) or (b) will make this sentence true.
D. Spoke SDP
正解：B