4A0-104 Online Practice Questions and Answers

Which of the following about VPRN route targets is FALSE?

A. Route targets are carried in MP-BGP updates.

B. Route targets identify the VRF that a VPN-IPv4 prefix is associated with.

C. Route targets are communicated between PEs that are part of a specific VPRN.

D. Route targets identify the egress SAP of a service towards a CE.

An IPv4 MPLS provider network is being configured for 6VPE. BGP is being used for the PE-CE protocol to exchange IPv6 routes. Which of the following is FALSE?

A. MP-BGP in the provider network needs to support the VPN-IPv6 address family.

B. PE routers must be configured to run MP-BGP.

C. PE-to-CE BGP sessions need to be configured to support IPv6.

D. The provider network core must be configured to support IPv6.

Click the exhibit.

This is output from router R4. Service 333 is a VPLS. Why does peer 10.10.10.1 not have an EgrLbl?

A. The SDP to 10.10.10.1 on router R4 is shutdown.

B. Router R4 has not sent a label to router R1 (10.10.10.1) yet.

C. 10.10.10.1 has a different service MTU set.

D. 10.10.10.1 has not sent a label to router R4 yet.

A service provider wishes to configure a Layer 2 service that will forward customer VLAN tags. When configuring an SDP for the service, which vc-type will forward service delimiting tags on the ingress PE?

A. vc-type ether

B. vc-type vlan

C. vc-type dot1q

D. vc-type null

What is the minimum Ethernet physical network MTU required for a Layer 2 service on a GRE encapsulated SDP with a service MTU of 1514?

A. 1514

B. 1526

C. 1548

D. 1556

E. 1536

Which of the following about the VPRN data plane is TRUE?

A. A packet receives a service label and a transport label at the ingress PE.

B. A packet has its service label swapped at each P router.

C. The egress PE pops the service label, and the transport label is forwarded.

D. The service label is popped by the remote CE.

Which of the following options are used to configure an MPLS signaling type to be used on an SDP? (Choose two.)

A. configure service sdp sdp-id gre create

B. configure service sdp sdp-id create

C. Idp

D. Isp Isp-name

What is the default vc-type for an SDP on the Nokia 7750 SR?

A. vc-type null

B. vc-type ether

C. vc-type vlan

D. vc-type none

Which of the following statements is TRUE concerning a VPRN data plane flow?

A. A data packet will receive a service label at the CE and a transport label at the ingress PE.

B. A data packet intended for a remote CE will have its service label swapped at each P router along the path towards the egress PE.

C. At the egress PE, the transport label will be popped and the data packet forwarded with the service label.

D. The service label is popped by the remote CE. The unlabeled packet is forwarded based on the longest match lookup algorithm in the VRF.

E. All of the above statements are false.

F. All of the above statements are true.

What is a key benefit of a VPLS service?

A. The customer maintains complete control over routing.

B. The adding of new sites is simplified; no re-configuration is required at existing sites.

C. The clear demarcation of functionality between service provider and customer makes troubleshooting easier.

D. All of the above.