Alcatel-Lucent 4A0-105 問題集

質問 1：
In IEEE 802.1ag,how are loops detected?
A. The MEP sees its own CFM frames returned to itself.
B. Spanning-tree BPDUs are returned to the sender.
C. The record field of the CFM frame keeps track of chassis-mac addresses.
D. This is not a function of IEEE 802.lag but of 802.1D
正解：A

質問 2：
A LAG is configured with LACP passive mode enabled.When will LACP packets be sent?
A. Every 1 second.
B. Never.
C. On initialization and then every hello-interval.
D. Only after receiving LACP packets.
正解：D

質問 3：
One of the shortcomings of Spanning Tree Protocol (STP) is that it computes a valid, but not necessarily optimal, path between nodes within a network.
A. FALSE
B. TRUE
正解：B

質問 4：
Click on the exhibit below.

How many LSPs are required in total between Metro A and Metro B if 100 hierarchical VPLS services are deployed across the two metro networks?
A. 2
B. 200
C. 1
D. 100
正解：A

質問 5：
Which of the following statements is true?
A. An IP filter can be applied on ingress at the same time a MAC filter is applied on the egress of the SAP.
B. Any number of ingress and egress filter policies can be associated with a SAP.
C. Filter Policies can be based on IP, MAC, and VPI/VCI addresses.
D. An IP filter and a MAC filter can be applied on the ingress SAP at the same time.
E. Filter Policies can only be applied on egress.
F. None of the above.
正解：A

質問 6：
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 7：
Click on the exhibit below.

A new router named PE-D is to be directly connected to PE-C and is required to be added to the existing VPLS 300. The design requires the least amount of signaling, the least amount of configuration changes for existing sites and the new site has to have access to all existing sites. How should the new site be added to VPLS 300?
A. Configure a mesh-sdp between all existing PE routers and the new PE router
B. Configure a mesh-sdp between PE-C and PE-D
C. Configure a spoke-sdp between PE-C and PE-D.
D. It is not possible to meet the design requirements.
正解：C

質問 8：
The FDB has learned 2 MAC addresses. The first is from a device accessible via a locality defined SAP, the second is from a device accessible via an SDP. Both MAC addresses were learned at the exact same time. If all traffic from these hosts stops at the same time, which address will age out first from the FDB based on default settings?
A. MAC learned via SAP
B. MAC learned via SDP
C. Both will timeout at the same time
D. There is not enough information to determine
正解：A

質問 9：
What is the default remote-age timer of a B-VPLS?
A. The same timer is used in all VPLS types.
B. The same timer as an l-VPLS.
C. Higher than the default timer of an I-VPLS.
D. Lower than the default timer of an l-VPLS.
正解：D