单选题What is a Label-Switched Path?（）A a traffic engineered pathB another name for a Frame Relay PVCC a bidirectional path through a networkD a unidirectional path through a network

A. The network is stable

B. There is a flapping link or interface, and router C knows an alternate path to the network

C. There is a flapping link or interf ace, and router C does not know an alternate path to the network

D. EIGRP is not working correctly on router C

E. There is not enough information to make a determination

A. A routed protocol is assigned to an interface and determines the method of packet deliver.

B. A routing protocol determines the path of a packet through a network.

C. A routed protocol determines the path of a packet through a network.

D. A routing protocol operates at the transport layer of the OSI model.

E. A routed protocol updates the routing table of a router.

A. a traffic engineered path

B. another name for a Frame Relay PVC

C. a bidirectional path through a network

D. a unidirectional path through a network

A. Router A will prefer the path through router B for network 172.20.0.0

B. Router A will prefer the path through router C for network 172.20.0.0

C. Packets from router D will prefer the path through router B for networks advertised by router A

D. Packets from r outer D will prefer the path through router C for networks advertised by router A

A. The network has been stable for at least the last 45 minutes

B. There is a flapping link or interf ace, and router C knows an alternate path to the network

C. There is a flapping link or interface, and router A does not know an alternate path to the network

D. EIGRP is not working correctly on router C

E. There is not enough information to make a determination

A. VTP

B. ISL

C. 802.1Q

D. STP

E. None of the above

A. to act as an equal-cost path to the primary path

B. to enable another LSP for load balancing

C. to act as a diverse backup path to the primary path

D. to allow the use of explicit path selection via EROs