单项选择题

A technician is renaming files on a PC from a command prompt and is currently in the root of driveC: Which of the following commands should the technician use to move to a different directory? （）

A.CD
B.DIR
C.MD
D.RD

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多项选择题

A technician turns on a PC and before the computer boots up, the technician is prompted for apassword. The technician does not know the password. Which of the following can the techniciando to allow access to the PC?（） (Select TWO).

A. Set the clear password jumper on the motherboard
B. Enter the BIOS setup and select the clear password setting
C. Remove the power cord from the power supply and then plug it back in
D. Power cycle the PC
E. Remove the CMOS battery for 15 minutes

单项选择题

Which of the following network modifications should be implemented to extend the wirelessnetwork range and allow out-of-range users to share the Internet connection?（）

A. Create a new VLAN for the out-of-range users.
B. Add a wireless access point for the out-of-range users.
C. Upgrade the out-of-range users’ SSID searching software.
D. Enable network sharing on the users’ computers that are within range.

多项选择题

Which of the following are encrypted protocols? （）(Select TWO).

A.TELNET
B.SSH
C.POP3
D.FTP
E.HTTPS