Which of the following hardware is hot pluggable?（）

单项选择题A technician needs to assign a default subnet mask for a class B network to a network device that was just installed. Which of the following would the technician use?（）

A.224.0.0.1
B.255.0.0.0
C.255.255.0.0
D.255.255.255.0

单项选择题A technician notices that there is a second partition on the primary hard drive. This partition is not assigned a drive letter and is not accessible from Windows. Which of the following is the MOST likely explanation for this extra partition?（）

A. Space reserved by the drive manufacturer for firmware.
B. Space set aside by Windows for use by the virtual memory swap file.
C. A potentially dangerous virus has been downloaded onto the system.
D. A recovery partition put there by the manufacturer.

多项选择题Which of the following commands verifies connectivity between two hosts?（）

A.chkntfs
B.dxdiag
C.tracert
D.ipconfig
E.ping

单项选择题A customer reports that the laser printer produces poor quality printouts. Having arrived onsite, the technician has a discussion with the customer and reviews some examples of their print jobs. Which of the following should the technician do NEXT? （）

A. Clean the toner cartridge.
B. Change the paper.
C. Replace the fuser.
D. Print a test page.

单项选择题A technician receives a boot error message OS not found. Which of the following should thetechnician check? （）

A. The boot order in the BIOS
B. If Plug and Play is enabled
C. If the computer is in Safe Mode
D. If the BIOS is current