What is the primary purpose of variable length subnet masks (VLSM)?

A. To reduce the size of each routing update.

B. To allow interoperability between routing protocols.

C. To allow different subnet masks for different subnets.

D. To reduce the size of the routing table.

Click on the exhibit.

Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?

A. Down

B. Initializing

C. 2-way

D. Full

The destination IP address of a received unlabeled packet is successfully matched in the FIB. Which of the following is FALSE?

A. A POP label stack operation may be performed.

B. The outgoing interface and next-hop address will be determined from the FIB.

C. The packet can be forwarded as a labeled or unlabeled packet.

D. A PUSH label stack operation may be performed.

Click on the exhibit.

All links have 1Gbps unreserved bandwidth initially and Shared Explicit reservation style is used. After the LSP's primary and standby secondary paths are signaled, how much unreserved bandwidth is left on the links?

A. R1-R2 will have 300Mbps left and R2-R4 will have 400Mbps left.

B. R1-R2 will have 400Mbps left and R2-R4 will have 400Mbps left.

C. R1-R2 will have 600Mbps left and R2-R4 will have 600Mbps left.

D. R1-R2 will have 300Mbps left and R2-R4 will have 600Mbps left.

Epipe services do no consume any MAC resources because MAC learning is disabled.

A. TRUE

B. FALSE

Which of the following statements is TRUE about the VRF?

A. The VRF is a virtual router on the PE router that contains the customer's routes for the VPRN

B. Each PE maintains multiple VRFs based on the number of PE peers it connects to.

C. Each PE has a VRF for each VPRN service provisioned on the router.

D. All of the above.

E. Only A and C.

F. Only A and B

Service tunnels and transport tunnels are bidirectional and only require the operator to configure the tunnel on one router.

A. TRUE

B. FALSE

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.

When using MP-BGP for an IPv4 VPRN service, what address family needs to be used for a PE-CE BGP session?

A. The VPN-IPv4 address family.

B. The IPv4 address family.

C. Either IPv4 or VPN-IPv4 address families can be configured.

D. The same address family must be used for the provider network and the PE-CE.

IS-IS IPv6 routing is configured in the network with globally routed addresses as shown. How many routes will router R4 have in its IPv6 route table?

A. 1

B. 2

C. 3

D. 4

E. 6

F. 7