Which of the following cable types can transmit at 100 ……

单项选择题A technician has installed a new motherboard in a workstation, but after hardware tests, themotherboard has failed. Which of the following should the technician do FIRST before replacingthe motherboard? （）

A. Reseat all power connections.
B. Remove the CMOS battery.
C. Install the graphics card.
D. Ground to the case.

单项选择题The security team has implemented new guidelines on how to handle sensitive information storedon workstations based on a past incident involving information found on donated workstations.Which of the following should be completed by technicians before donating the workstations?（）

A. Install a new operating system
B. Delete users’ data before donation
C. Write the drive with 1’s and 0’s three times
D. Delete all partitions of the hard drive

单项选择题A user is trying to connect a mobile IR printer to a mobile device with no success. Which of the following is the MOST important when printing to an IR printer?（）

A. Enough light
B. Line of sight
C. Correct printer drivers
D. Enough power

单项选择题The network printer is locking up and printing garbled text. When the user cancels the job fromtheir local print queue, nothing happens. Which of the following is the MOST likely cause?（）

A. The printer needs to be power cycled to clear the job.
B. The print server’s queue needs to be checked.
C. The printer needs to be set to factory defaults.
D. The user’s workstation needs to be rebooted.

单项选择题Which of the following ISP types requires an RJ-11 connection to the PC?（）

A.Cellular
B.Cable
C.Dial-up
D.WiMAX