单项选择题

Which of the following BEST describes the function of a DNS server?（）

A. Secures network traffic through shared key encryption.
B. Provides resolution of host names to IP addresses.
C. Provides security for a network through the use of ACLs.
D. Dynamically assigns IP addresses for easy client configuration.

<上一题目录下一题>

热门试题

单项选择题A user calls and says they cannot get to the Internet. How would a technician walk the user through checking the IP address and default Gateway on the computer?（）

A. Start>Run>type ipconfig>click OK and ask user to read the results.
B. Start>Run>type cmd>click OK>type ipconfig /flushdns>press enter and ask user to read the results.
C. Start>Run>type cmd>click OK>type ipconfig /release>press enter key and ask user to read the results.
D. Start>Run>type cmd>click OK>type ipconfig /all>press enter key and ask user to read the results.

多项选择题Which of the following bus speeds is used for a PCIe card?（）

A. 1x
B. 3x
C. 6x
D. 8x
E. 24x

单项选择题Which of the following connector types is used with twisted pair cable?（）

A. T-Connector
B. BNC
C. RJ-45
D. LC

单项选择题Which of the following allows verification of the port that a printer is currently using?（）

A. The print queue window from system tray
B. Properties of the printer from the Printers Control Panel
C. Print spooler view in the Printers Control Panel
D. Properties of the port within Device Manager

单项选择题Which of the following protocols uses port 80?（）

A. SMTP
B. HTTP
C. HTTPS
D. FTP