A.The last three bits of DSCP are set to 101.

B.Eight levels of AF in DSCP are mapped into eight levels of IP Precedence.

C.The first three bits of DSCP are mapped into three bits of IP Precedence.

D.All 8 bits of TOS are set to zero.

A.If multiple routers associate to the same virtual router, they must be configured with the same virtual router ID and at feast one virtual IP address.

B.If multiple routers are configured with the same virtual IP address, they all associate to the same virtual router.

C.If multiple routers associate to the same virtual router, they must be configured with the same virtual router ID and virtual IP address.

D.If multiple routers are configured with the same virtual router ID.they all associate to the same virtual router.

A.False

B.True

A.The two routers between which LDP session is established are called LDP Peer.

B.In MPLS, LDP is used to implement label distribution, label control and label retention.

C.The UDP and TCP port number for LDP is 64.

D.Between two LSRs that run LDP, the LDP session is established and Label/FEC mapping information is exchanged.