4A0-105 Online Practice Questions and Answers

Which of the following technologies allows for two explicit VLAN tags to be received from a customer device?

A. RSVP-TE

B. SP-VLAN

C. QinQ

D. Dot1Q

Which of the following statements is false?

A. VPLS is a bridged LAN service.

B. VPLS provides L2 VPN services to CEs.

C. VPLS is a point-to-point service where CEs are presented with point-to-point virtual circuits.

D. CEs that are members of the same VPLS service instance communicate with each other as if they are connected via a bridged LAN.

In Rapid Spanning Tree Protocol, a Backup Port is on the same switch as a Designated Port?

A. TRUE

B. FALSE

MC-LAG provides link and node protection from an MDU to 3 or more PE devices.

A. TRUE

B. FALSE

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 be down.

C. The mesh-sdp will only be up on PE-A.

D. The mesh-sdp will only be up on PE-C.

Click on the exhibit below.

Management VPLS 100 has been created for redundant spoke-SDP connections. User VPLSs 10 and 20 are using the same spoke-SDPs that are being managed by VPLS 100. Unexpected behavior has been reported. Based on the following output, what is the most likely reason for the unexpected behavior?

A. VPLS 100 was not actually configured as a management VPLS.

B. VPLS 10 and VPLS 20 are not actually configured as a user VPLS.

C. VPLS 10 and VPLS 20 are not using the same spoke-sdps that the management VPLS is using.

D. Based on the output there is now way of telling if there is a problem with the configuration.

Click on the exhibit below.

Which SDP on R3 will MAC addresses be associated with for devices behind R2?

A. It depends if traffic is received via R4 or R1 from devices behind R2.

B. The devices cannot communicate based on the configuration in the diagram so there will be no mac address association.

C. Devices behind R2 will be associated with the sdp between R3 and R1.

D. Devices behind R2 will be associated with the sdp between R3 and R4.

H-VPLS solves the data-plane and control-plane problems with the exception of one issue. What is the concern that H-VPLS does not solve?

A. Increased LSP count.

B. Number of TLDP sessions.

C. The amount of network touches.

D. FDB consumption.

E. Increased bandwidth and replication.

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.

In IEEE 802.1ag, which two key functions are configured on bridge ports (SAPs and SDPs) to support CFM messages? (Choose 2)

A. MEP

B. MAP

C. MIP

D. MUP