A router with a serial interface will be used for an ISDN link.What other function group devices are required to complete the connection to the service provider? （）

单项选择题A technician at TestKing needs to update the network documentation. One of the tasks includes documenting the name of the IOS image file of each router in the network.Which commands could be used to find this information?（）

A. Router# show protocols
B. Router# show version
C. Router# show image
D. Router# show IOS
E. Router# show flash

多项选择题Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?（）

A.15.234.118.63
B.92.11.178.93
C.134.178.18.56
D.192.168.16.87
E.201.45.116.159
F.217.63.12.192

多项选择题Which of the following host addresses are member 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. 212.192.48.254

多项选择题Which connections allow the use of full-duplex Ethernet?（）

A. Switch to host
B. Switch to switch
C. Hub to hub
D. Switch to hub
E. Host to host

单项选择题What is the purpose of pressing the Ctrl+Break keys during the router password recover procedure?（）

A. To restart the router.
B. To bypass the configuration in Flash.
C. To view the password before changes are made.
D. To bypass setup configuration mode.
E. To access ROM Monitor mode.