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質問 1：
Click on the exhibit below.
Based on the following configuration which VLANs will be managed by the management VPLS?
A. There is not enough information provided
B. VLANs 1-4094
C. VLAN0
D. None, this is an invalid configuration
正解：B
質問 2：
Which of the following describes the setting of the l-SID on the Alcatel-Lucent 7750 SR?
A. TheI-SID is set to 0 by default and is only used for interop purposes. The receiving PE uses the service label to determine the I-VPLS.
B. The I-SID is set to the service-id, unless the service-id is larger than a 24 bit value. In this case the I-SID must be explicitly configured.
C. TheI-SID is always set to the service-id by default.
D. There is no default value. The I-SID must always be explicitly configured
正解：B
質問 3：
Which of the following is a function of the data plane that must be considered when provisioning a VPLS service?
A. Bandwidth and replication requirements.
B. Number of TLDP sessions.
C. Number of LSPs.
D. MAC address consumption in the FDB.
E. Number of SDPs.
正解：A
質問 4：
When deploying Active/Standby pseudowires,the CE does not require any special configuration
A. TRUE
B. FALSE
正解：B
質問 5：
What configuration is required on the CE device when using MC-LAG?
A. The CE must be an Alcatel-Lucent 7750 SR.
B. The CE must be configured with LACP in active mode.
C. The CE must be configured with an MC-LAG to both PE devices.
D. There is no configuration required on the CE.
正解：B
質問 6：
When a PE node receives a PBB encapsulated frame on a B-VPLS, how does the PE determine which l-VPLS it belongs to?
A. The l-SID in the l-TAG is inspected to determine where the frame should be delivered.
B. When the B-MAC header is stripped the customer MAC address is then looked up in the FDB
C. The l-TAG in the l-SID is inspected to determine where the frame should be delivered.
D. The PE inspects the service label in the MPLS header before stripping the B-MAC
header.
正解：A
質問 7：
Which of the following best describes the difference between VPWS and VPLS?
A. Unlike VPWS, VPLS allows customers to view the network as a routed network.
B. Unlike VPWS, VPLS is a service where customer MAC addresses are learned.
C. Unlike VPLS. VPWS appears as a multi-hop network to the customers.
D. Unlike VPLS, VPWS allows CEs that are member of the same service instance to communicate with each other as if they are connected via a bridged LAN.
正解：B
質問 8：
When spanning tree is enabled within a VPLS service and the STP mode is 802.1 D 2004 what happens if a PVST BPDU is received on a SAP?
A. The spanning tree encapsulation will be dynamically changed to PVST on the SAP the PVST BPDU was received on.
B. The SAP that the PVST BPDU was received on will be disabled to prevent loops.
C. Spanning tree will be disabled on the SAP that the PVST BPDU was received on.
D. The PVST BPDU will be ignored and 802.1D 2004 BPDUs will continue to be transmitted on the SAP.
正解：A
質問 9：
What is the default fdb size for a VPLS service?
A. 25
B. 250
C. 100
D. 1
正解：B
Click on the exhibit below.
Based on the following configuration which VLANs will be managed by the management VPLS?
A. There is not enough information provided
B. VLANs 1-4094
C. VLAN0
D. None, this is an invalid configuration
正解：B
質問 2：
Which of the following describes the setting of the l-SID on the Alcatel-Lucent 7750 SR?
A. TheI-SID is set to 0 by default and is only used for interop purposes. The receiving PE uses the service label to determine the I-VPLS.
B. The I-SID is set to the service-id, unless the service-id is larger than a 24 bit value. In this case the I-SID must be explicitly configured.
C. TheI-SID is always set to the service-id by default.
D. There is no default value. The I-SID must always be explicitly configured
正解：B
質問 3：
Which of the following is a function of the data plane that must be considered when provisioning a VPLS service?
A. Bandwidth and replication requirements.
B. Number of TLDP sessions.
C. Number of LSPs.
D. MAC address consumption in the FDB.
E. Number of SDPs.
正解：A
質問 4：
When deploying Active/Standby pseudowires,the CE does not require any special configuration
A. TRUE
B. FALSE
正解：B
質問 5：
What configuration is required on the CE device when using MC-LAG?
A. The CE must be an Alcatel-Lucent 7750 SR.
B. The CE must be configured with LACP in active mode.
C. The CE must be configured with an MC-LAG to both PE devices.
D. There is no configuration required on the CE.
正解：B
質問 6：
When a PE node receives a PBB encapsulated frame on a B-VPLS, how does the PE determine which l-VPLS it belongs to?
A. The l-SID in the l-TAG is inspected to determine where the frame should be delivered.
B. When the B-MAC header is stripped the customer MAC address is then looked up in the FDB
C. The l-TAG in the l-SID is inspected to determine where the frame should be delivered.
D. The PE inspects the service label in the MPLS header before stripping the B-MAC
header.
正解：A
質問 7：
Which of the following best describes the difference between VPWS and VPLS?
A. Unlike VPWS, VPLS allows customers to view the network as a routed network.
B. Unlike VPWS, VPLS is a service where customer MAC addresses are learned.
C. Unlike VPLS. VPWS appears as a multi-hop network to the customers.
D. Unlike VPLS, VPWS allows CEs that are member of the same service instance to communicate with each other as if they are connected via a bridged LAN.
正解：B
質問 8：
When spanning tree is enabled within a VPLS service and the STP mode is 802.1 D 2004 what happens if a PVST BPDU is received on a SAP?
A. The spanning tree encapsulation will be dynamically changed to PVST on the SAP the PVST BPDU was received on.
B. The SAP that the PVST BPDU was received on will be disabled to prevent loops.
C. Spanning tree will be disabled on the SAP that the PVST BPDU was received on.
D. The PVST BPDU will be ignored and 802.1D 2004 BPDUs will continue to be transmitted on the SAP.
正解：A
質問 9：
What is the default fdb size for a VPLS service?
A. 25
B. 250
C. 100
D. 1
正解：B
小雪 -
私は4A0-105は全くの素人でしたが無事合格する事ができました。このPass4Testサイトの4A0-105問題集は解説してあるので理解できました。