When configured. MPLS can increa

24． Which of the following is TRUE?

A． When he talks or sings, Jay Chou can both speak clearly．

B． When he sings, Jay Chou can-t speak clearly． When he talks, he can't, either．

C． When he talks, Jay Chou can-t speak clearly． But when he sings, he can．

D． When he sings, Jay Chou can't speak clearly． But when he talks, he can．

A.Logical units are used only when a Layer 2 identifier is present such as a VLAN

B.A logical unit of 0 is required when using a frame-relay DLCI

C.A logical unit is always required

D.Logical units are not required unless ATM or 802.1Q VLAN tagging is configured.

---- Excuse me. Could you tell me ___________?

---- Yes, There is a video shop next to the tall building.

A. where can I buy some CDs B. where I can buy some CDs

C. when can I buy some CDs D. when I can buy some CDs

A. to make CEF tables smaller

B. to enable label switching on the frame mode interface

C. to restrict MPLS availability to predefined time periods

D. to restrict label switching to a limited number of networks

E. to restrict end users from seeing the routers in the MPLS network

29．__________ when you are on the bus or bike．

A． Radio can be listened

B．TV can be watched

C． Radio can be listened to

D． TV can be used

A.Bus

B.Mesh

C.Multipath

D.Ring

发生火情时，客人们能用电梯吗?

A.Can guests use the stairs when a fire appears?

B.Can guests use the elevators when a fire presents?

C.Can guests use the lifts when a fire occurs?

D.Can guests use the ladders when a fire breaks up?

A. Layer 3 MPLS VPNs can forward only IP packets

B. Layer 2 MPLS VPNs can forward any network protocol

C. MPLS label paths are automatically formed based on Layer 2 frames

D. Layer 3 MPLS VPNs can forward any network protocol based on Layer 2 frames

E. In Layer 2 MPLS VPNS, the service provider controls the customer Layer 3 policies