4A0-105 Online Practice Questions and Answers

Click on the exhibit below.

The following VPLS services and SAPs have been configured. Which of the following statements is true?

A. All untagged frames will be dropped.

B. The source MAC address of a frame with a top tag of 200 and bottom tag of 300 will be populated in VPLS 3.

C. All frames with more than one tag will be dropped.

D. The source MAC address of a frame with a single tag of 500 will be populated in VPLS 1.

E. The source MAC address of a frame with a top tag of 100 will be populated in VPLS 2.

Click on the exhibit below.

A new site is added to PE-D of Metro B. Which of the following statement below is true?

A. If a spoke-SDP is configured between the new site and PE-D no further SDPs will be required.

B. If a mesh- SDP is configured between the new site and PE-D no further SDPs will be required.

C. A mesh- SDP must be configured between the new site and all other PEs within Metro B.

D. A spoke- SDP must be configured between the new site and all other PEs within Metro B.

MAC explosion is best described as a large amount of MAC addresses being withdrawn and relearned?

A. TRUE

B. FALSE

What is the default remote-age timer of a B-VPLS?

A. The same timer is used in all VPLS types.

B. Higher than the default timer of an I-VPLS.

C. Lower than the default timer of an l-VPLS.

D. The same timer as an l-VPLS.

Click on the exhibit below.

Given the following output what is the most likely reason the SDP binding is operationally down? (Choose 2)

A. The sdp id is different on the far-end.

B. LDP is disabled on the far-end.

C. The vc-id is different on the far-end.

D. The mesh-sdp is missing on the far-end.

E. The mesh-sdp is administratively shutdown on PEL

F. There is an MTU mismatch.

Click on the exhibit below.

Assume a CE router is connected to the SAP of each PE. The arp cache of all CE routers is empty and the FDB for VPLS 300 is empty. The CE router connected to PE-A initiates a ping towards the CE router connected to PE-C. The ping is successful. Which of the following statements are true? (Choose 2)

A. The FDB on PE-A will contain entries for all CE routers.

B. The FDB on PE-B will contain an entry for the CE router connected to PE-A.

C. The FDB on PE-B will contain an entry for all CE routers.

D. The FDB on PE-C will contain entries for the CE router connected to PE-A and the CE router connected to PE-C.

What is the MTU impact on the SDP path-mtu if fast reroute, one-to-one mode is implemented on the LSP?

A. There will be no impact on the path-mtu.

B. The path-mtu will decrease by4 bytes.

C. The path-mtu will increase by 4 bytes.

D. The path-mtu will decrease by 8 bytes.

E. The path-mtu will increase by 8 bytes.

RSTP blocks a spoke-sdp using a management VPLS. Is traffic affected on an ES using the same transport SDP?

A. Yes

B. No

Click on the exhibit below.

CE-A is on VLAN 200 and CE-B is on VLAN 300. Which of the following SAP ids can be configured on PEA and PE-B to allow direct communication between CE-A and CE-B?

A. PE-A will require a SAP id of "sap 1/1/1:200" and PE-B will require a SAP id of "sap 1/1/1:300.

B. PE-A will require a SAP id of "sap 1/1/1" and PE-B will require a SAP id of "sap 1/1/1".

C. PE-A will require a SAP id of "sap 1/1/1:0" and PE-B will require a SAP id of "sap 1/1/1:0".

D. PE-A will require a SAP id of "sap 1/1/1:*" and PE-B will require a SAP id of "sap 1/1/1:*".

Which of the following is a true statement?

A. The lower the age-time, the greater the amount of flooding

B. The higher the age-time, the greater the amount of flooding.

C. The lower the age-time, the lower the amount of flooding.

D. There is no relationship between the age-time and the amount of flooding.