單項選擇題What will a router do during startup if a configuration file is not located in NVRAM?（）

A. it will search for the configuration file in the locations specified by boot system commands.
B. it will search for the configuration file in flash and if no configuration file is found there, it will enter the setup dialog.
C. it will search for the configuration file on a TFTP server and if no configuration file is found there, it will enter the setup dialog.
D. it will search for the configuration file in flash and if no configuration file is found there, it will load a limited configuration file from ROM.
E. it will search for the configuration file on a TFTP server and if no configuration file is found there, it will load a limited configuration file from ROM.


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1.單項選擇題A router leams about a remote network from EIGRP.OSPF. and a static route. Assuming all routing protocols are using their default administrative distance, which route will the router use to forward data to the remote network?（）

A. The router will use the static route.
B. The router will use the OSPF route.
C. The route will use the EIGRP route.
D. The router will load balance and use all three routes.

3.單項選擇題What is the advantage of using a multipoint interface instead of point-to-point subinterfaces when configuring a Frame Relay hub in a hub-and-spoke topology?（）

A. it avoids split-horizon issues with distance vector routing protocols.
B. IP addresses can be conserved if VLSM is not being used for subnetting.
C. A multipoint interface offers greater security compared to point-to-point subinterface configurations.
D. The multiple IP network addresses required for a multipoint interface provide greater addressing flexibility over point-to-point configurations.

4.多項選擇題What are the possible trunking modes for a switch port?（）

A.transparent
B.auto
C.on
D.desirable
E.client
F.forwarding

5.多項選擇題Which of the following are types of flow control?（）

A.buffering
B.cut-through
C.windowing
D.congestion avoidance
E.loadbalancing

6.單項選擇題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.

8.多項選擇題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

9.單項選擇題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.

10.單項選擇題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