Which peripheral device should be used?

An employee needs to execute a program from the command line.

Which peripheral device should be used?
A . Keyboard
B . Hard drive
C . Speaker
D . Printer

Answer: A

Explanation:

The employee needs to execute a program from the command line, which requires inputting commands into the computer.

The primary device for inputting commands is the keyboard.

Other options like the hard drive, speaker, and printer are not used for inputting commands.

The hard drive is used for data storage.

The speaker outputs sound.

The printer outputs documents.

Therefore, the correct peripheral device for this task is the keyboard.

References:

"Computer Fundamentals" by Anita Goel, which discusses input devices and their uses.

"The Principles of Information Systems" by Ralph Stair and George Reynolds, which details peripheral devices and their functions.