A+ Certification Practice Questions

1. What does CPU stand for?

Central Processing Unit

Central Power Unit

Computer Power Unit

Cross Power Unit

The correct answer is Central Processing Unit. CPU stands for Central Processing Unit, which is the primary component of a computer that performs most of the processing inside the computer. It is responsible for executing instructions, performing calculations, and managing the flow of data within the computer system.

Explanation

The correct answer is Central Processing Unit. CPU stands for Central Processing Unit, which is the primary component of a computer that performs most of the processing inside the computer. It is responsible for executing instructions, performing calculations, and managing the flow of data within the computer system.

2. Among the components listed below, identify an output device.

Monitor

CPU

Keyboard

Mouse

An output device is a component that displays information or data from a computer. In this case, the monitor is the correct answer because it visually presents the output of the computer, such as text, images, and videos. The CPU, keyboard, and mouse are all input devices, as they allow the user to interact with and input data into the computer system.

Explanation

An output device is a component that displays information or data from a computer. In this case, the monitor is the correct answer because it visually presents the output of the computer, such as text, images, and videos. The CPU, keyboard, and mouse are all input devices, as they allow the user to interact with and input data into the computer system.

3. Among the components lised below, name an input device.

Monitor

CPU

Keyboard

Printer

An input device is a device that allows users to input data or commands into a computer. The keyboard is a common input device that enables users to type and enter data into the computer. It consists of a set of keys, including letters, numbers, and various function keys, which are used to input information or commands into the computer system. Therefore, the keyboard is the correct answer as it is an input device used for data input.

Explanation

An input device is a device that allows users to input data or commands into a computer. The keyboard is a common input device that enables users to type and enter data into the computer. It consists of a set of keys, including letters, numbers, and various function keys, which are used to input information or commands into the computer system. Therefore, the keyboard is the correct answer as it is an input device used for data input.

4. A scanner is an output device.

True

False

A scanner is actually an input device, not an output device. It is used to convert physical documents or images into digital format, which can then be stored, edited, or printed. Output devices, on the other hand, are used to display or present information to the user, such as monitors or printers.

Explanation

A scanner is actually an input device, not an output device. It is used to convert physical documents or images into digital format, which can then be stored, edited, or printed. Output devices, on the other hand, are used to display or present information to the user, such as monitors or printers.

5. CD- ROm is used to store data.

True

False

A CD-ROM is a type of optical disc that is used to store data. It stands for Compact Disc-Read Only Memory. It is commonly used to store software, documents, multimedia files, and other types of data. The data on a CD-ROM cannot be modified or erased, hence the "Read Only" aspect. Therefore, the statement "CD-ROM is used to store data" is true.

Explanation

A CD-ROM is a type of optical disc that is used to store data. It stands for Compact Disc-Read Only Memory. It is commonly used to store software, documents, multimedia files, and other types of data. The data on a CD-ROM cannot be modified or erased, hence the "Read Only" aspect. Therefore, the statement "CD-ROM is used to store data" is true.