A.bufferingB.cut-throughC.windowingD.congestion avoidan……

单项选择题Which statement about the ip classless router command is true?（）

A. The ip classless command is enabled by default in recent versions of IOS.
B. The ip classless command should only be enabled when static routing is being used instead of a routing protocol.
C. The ip classless command should be enabled by the network administrator whenever RIPv1 or IGRP is being used.
D. The ip classless command should be enabled by the network administrator whenever OSPF, RIPv2, or EIGRP is being used.

单项选择题An OSPF interface has been configured with the bandwidth 64 command. What will be the calculated OSPF cost of this link?（）

A.1
B.10
C.1562
D.64000
E.128000

多项选择题Which of the following host addresses are members of networks that can be routed across the public Internet?（）

A.10.172.13.65
B.172.16.223.125
C.172.64.12.29
D.192.168.23.252
E.198.234.12.95
F.212.193.48.254

单项选择题Which of the following is true concerning Frame Relay multipoint subinterfaces?（）

A. An IP address is required on the physical interface of the central router.
B. All routers are required to be fully meshed.
C. All routers must be in the same subnet to forward routing updates and broadcasts.
D. Multipoint is the default configuration for Frame Relay subinterfaces.

单项选择题Which command is required to apply an access list on a virtual terminal line of a router?（）

A. Router(config-line)# access-class 10 in
B. Router(config-if)# ip access-class 23 out
C. Router(config-line)# access-group 15 out
D. Router(config-if)# ip access-group 110 in
E. Router(config-line)# access-list 150 in
F. Router(config-if)# ip access-list 128 out