最新なAlcatel-Lucent 4A0-105問題集（156題）、真実試験の問題を全部にカバー！

質問 1：
Which of the following are true when ports are configured with the IEEE 802.3ah Loopback Control feature? (Choose 3)
A. All packets, exceptfor information PDUs,are looped back.
B. The loopback control PDU instructs the remote port to enter loopback mode.
C. Putting a port in loopback does not affect customer data flow
D. Both ports must rediscover the OAM capabilities of each other once the port is put back into service.
E. When a port is in loopback mode, service mirroring will still work if it is a mirror-source or mirror-destination.
F. Both ports must still send Information PDUs to avoid going back to discovery mode.
正解：A,B,F

質問 2：
MAC explosion is best described as a large amount of MAC addresses being withdrawn and relearned?
A. TRUE
B. FALSE
正解：A

質問 3：
After the "disable-learning" command has been executed at the VPLS level, a new client device originates a frame. What is the result?
A. The new source MAC addresses will not be entered in the VPLS service forwarding database.
B. New remote source MAC addresses will not be entered in the VPLS services forwarding database, but new local MAC addresses would continue to be entered.
C. If the MAC address of this new client device does not reach the upper limit of the configured total number of MAC addresses allowed in the VPLS forwarding database, then the new MAC address will be stored.
D. New local source MAC addresses will not be entered in the VPLS service forwarding database, but new remote MAC addresses would continue to be entered.
正解：A

質問 4：
Click on the exhibit below.

The service MTU on PE-A is 1514 bytes and the service MTU on PE-C is 1518 bytes. What is the status of the mesh-sdp between PE-A and PE-C?
A. The mesh-sdp will be up.
B. The mesh-sdp will only be up on PE-A.
C. The mesh-sdp will be down.
D. The mesh-sdp will only be up on PE-C.
正解：C

質問 5：
Which protocol is used to signal the status of the active links between the PE and the CE in MC-LAG?
A. DHCP
B. MCLAG
C. A proprietary protocol
D. MSTP
E. LACP
正解：E

質問 6：
Click on the exhibit below.

The SAP on PE-A has been configured with dot1q encapsulation. The SAP on PE-B has been configured with qinq encapsulation. CE-A sends frames with a single tag of 100. The VLAN tag from CE-A must be passed transparently. CE-B is expecting a frame with a top tag of 200 and bottom tag of 100. Which of the following is the correct SAP id for PE-B?
A. sap 1/1/1:200*
B. sap 1/1/1:*
C. sap 1/1/1:0*
D. sap 1/1/1:200.100
正解：A

質問 7：
What is the default fdb size for a VPLS service?
A. 25
B. 250
C. 100
D. 1
正解：B

質問 8：
In IEEE 802.1ag,how are loops detected?
A. Spanning-tree BPDUs are returned to the sender.
B. This is not a function of IEEE 802.lag but of 802.1D
C. The MEP sees its own CFM frames returned to itself.
D. The record field of the CFM frame keeps track of chassis-mac addresses.
正解：C

質問 9：
Which of the following features can be enabled to eliminate MAC instability when using policy-based forwarding to redirect traffic to a Layer 2 DPI device?
A. mac-move
B. discard-unknown
C. disable-learning
D. enable-mac-stability
正解：C