All Free Computer Science and IT MCQs with Answers

371. ADF stands for ________?

• A. All Disc Feeder
• B. Automatic Document Feeder
• C. Automatic Document Finder
• D. Automatic Disc Finder

Explanation: ADF means Automatic Document Feeder, a scanner or printer mechanism that feeds multiple pages automatically. It refers to documents, not discs or searching for files.

372. AGP stands for ________?

• A. Accelerated Group Part
• B. Advanced Graphics Port
• C. Accelerated Graphics Port
• D. Advanced Group Part

Explanation: AGP means Accelerated Graphics Port, an older high-speed interface designed to connect a graphics card to the motherboard. “Advanced Graphics Port” is the usual distractor.

373. LCD stands for ________?

• A. Liquid Clear Display
• B. Light Clear Display
• C. Light Crystal Display
• D. Liquid Crystal Display

Explanation: LCD means Liquid Crystal Display, which uses liquid-crystal cells to control light and form images. “Light Crystal Display” reverses the essential term.

374. ___________ is system software to facilitate editing of text and data?

• A. MS Word
• B. Editors ....
• C. PowerPoint
• D. MS publisher

Explanation: An editor is software used to create or modify text and other data; it is commonly classified as a system utility in basic computer texts. MS Word and Publisher are application programs, and PowerPoint is presentation software.

375. Which of the following is/ are operating systems?

• A. Windows
• B. Unix
• C. OS/2
• D. All of these

Explanation: Windows, Unix, and OS/2 are all operating systems that manage computer hardware and provide services to applications. Therefore, the inclusive choice is All of these.

376. Physical structure of computer is called __________?

• A. Software
• B. Hardware
• C. Human ware
• D. All of these

Explanation: Hardware is the physical structure of a computer, including components such as the processor, keyboard, and monitor. Software consists of instructions, so it is not physically part of the computer’s structure.

377. LED stands for

• A. Light Emission Digit
• B. Light Emitting Diode
• C. Light Emission Depot
• D. Light Emission Direct

Explanation: LED expands to Light Emitting Diode. It produces light when electric current passes through a semiconductor diode.

378. FDD stands for

• A. Flight Dynamics Division
• B. Feature Driven Development
• C. Floppy Disk Drive
• D. Frequency Division Duplex

Explanation: FDD commonly means Floppy Disk Drive, the hardware that reads and writes floppy disks. The other expansions belong to unrelated technical fields.

379. PDA stands for

• A. Personal Digital Assistant
• B. People's Digital Assistant
• C. Personal Data Assistant
• D. People's Data Assistant

Explanation: PDA stands for Personal Digital Assistant, a small handheld device used for functions such as scheduling, contacts and notes. “Data Assistant” is not the standard expansion.

380. Programs designed to perform specific task is known as ________________.

• A. System software
• B. Application software
• C. Utility programs
• D. Operating system

Explanation: Application software is written to help users perform specific tasks, such as word processing, accounting or web browsing. System software manages the computer itself, while utilities perform maintenance tasks.