4A0-104 Online Practice Questions and Answers

A customer has sites on three different Nokia 7750 SRs. The customer requires a fully-meshed VPLS. Which of the following is TRUE?

A. Each router requires 1 SDP.

B. Each router requires 2 SDPs.

C. Each router requires 3 SDPs.

D. Each router requires 6 SDPs.

An Ethernet frame is received by SAP 1/1/1:33. Which of the following is FALSE?

A. If the frame has a VLAN tag of 33, it is accepted.

B. If the frame has a tag other than 33, it is dropped.

C. If the frame is untagged, a VLAN tag of 33 is added, and the frame is accepted.

D. If the frame is untagged, it is dropped.

A VPRN service is configured with BGP used as the CE-PE routing protocol. What address families are required on the PE-CE BGP session?

A. VPN-IPv4 address families are required in order for routes to be exchanged with the PE.

B. Only default IPv4 address families are required since the CE is not aware of the VPRN service

C. Either IPv4 or VPN-IPv4 address families can be configured on the PE-CE BGP session

D. An IPv4 address family configuration is required for the PE-PE configuration.

The SAP 1/1/1:2.3 receives an untagged Ethernet frame. Which of the following is TRUE?

A. The frame is dropped.

B. VLAN tags 2 and 3 are added to the frame.

C. Only outer VLAN tag 2 is added.

D. Only inner VLAN tag 3 is added.

Which of the following about SDPs is FALSE?

A. Spoke SDPs prevent loops in a VPLS.

B. Mesh SDPs and spoke SDPs can be used in the same VPLS.

C. A spoke SDP does not require the routers at both ends to be directly connected.

D. A mesh SDP is identical to a spoke SDP except for its flooding behavior.

Which of the following best describes a distributed E-pipe Service?

A. An E-pipe that has 2 or more SDPs configured.

B. An E-pipe that has 3 or more SAPs configured.

C. An E-pipe that has 2 SAPs on the same node but no SDPs configured

D. An E-pipe that is configured between two nodes, each having 1 SAP and 1 SDP configured.

Which of the following encapsulation types on an Ethernet port support the provisioning of multiple SAPs? (Choose two.)

A. Dot1Q

B. Q-in-Q

C. ATM

D. NULL

E. Nil

What happens when a packet without a VLAN tag is received on a SAP provisioned with null encapsulation while an SDP vc-type is provisioned as vlan?

A. The frame is dropped.

B. The service ID is added as the VLAN tag.

C. A VLAN tag of 0 is added as the provider VLAN tag

D. The frame is forwarded with no VLAN tag

Which of the following statements best describes the purpose of an MP-BGP in a VPRN?

A. Routes from different customers with the same IPv4 address prefix are treated as equivalents by MPBGP.

B. Nokia 7750 SR routers support MP-BGP for VPN label signaling in a VPRN service only if LDP is used for LSP signaling.

C. The multi-protocol nature of MP-BGP allows VPRN routes to be distributed within the provider core network as IPv4 routes.

D. MP-BGP is an enhanced version of BGP that can carry a service label, a tranpot label, and customer route prefixes.

E. None of the above statements describe the use of an MP-BGP in a VPRN.

F. All of the above statements describe the use of an MP-BGP in a VPRN.

Which of the following conditions are necessary in order for service labels to be signaled between two PE routers? (Choose three.)

A. LDP must be enabled on both PE routers.

B. RSVP must be enabled on both PE routers.

C. Traffic engineering must be enabled in the IGP.

D. The VC-ID must match between the two PE routers in both directions.

E. The transport tunnel must be operationally up between the two PE routers in both directions.

F. The SDP ID must match between the two PE routers in both directions.