单项选择题
Which of the following protocols uses port 119, by default?（）
A.NNTP
B.NTP
C.TFTP
D.FTP
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相关考题
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单项选择题
When the DHCP server is unavailable for a network, how will PCs attempt to configure their NICs?（）
A. PCs will attempt to use the last address assigned to them
B. PCs will pull from a static address pool
C. PCs will use APIPA
D. PCs will prompt the user for an address
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单项选择题
A user is trying to connect their new desktop to the network but is unable to get an IP address. The technician tests the cable and finds that there are too many open pairs. Which of the following wiring standards needs to be used in the replacement cable?（）
A. 568B
B.Crossover
C. 569-A
D. 607-A -
单项选择题
An administrator needs to know the workstation name of a user who called in for support in orderto remotely manage it. After calling the user and having the user open a command prompt, whichof the following commands would the administrator ask the user to type?（）
A. Netstat
B. Ifconfig
C. Hostname
D. Ping
