All Free Computer Science and IT MCQs with Answers

271. CAD stands for_________?

• A. Computer aided design
• B. Computer algorithm for design
• C. Computer application in design
• D. Computer analogue design

Explanation: CAD expands to Computer-Aided Design, software used to create and modify engineering, architectural, and product designs. The other choices do not form the established expansion of CAD.

272. EBCDIC stands for__________?

• A. Extended Binary Coded Decimal Interchange Code
• B. Extended Bit Code Decimal Interchange Code
• C. Extended Bit Case Decimal Interchange Code
• D. Extended Binary Case Decimal Interchange Code

Explanation: EBCDIC means Extended Binary Coded Decimal Interchange Code, an 8-bit character encoding historically used mainly on IBM mainframes. The other options incorrectly replace Binary with terms such as Bit or Case.

273. MICR stands for_________?

• A. Magnetic ink character recognition
• B. Magnetic Ink Code Reader
• C. Magnetic Ink Cases Reader
• D. None of these

Explanation: MICR means Magnetic Ink Character Recognition, a technology that reads magnetically printed characters on bank cheques. It is recognition of characters, not a magnetic ink code reader or case reader.

274. UNIVAC is___________?

• A. Universal Automatic Computer
• B. Universal Array Computer
• C. Unique Automatic Computer
• D. Unvalued Automatic Computer

Explanation: UNIVAC is short for Universal Automatic Computer, the name of an early commercial computer series. The remaining expansions are not the historical meaning of the acronym.

275. You can organize files by storing them in__________?

• A. archives
• B. folders
• C. indexes
• D. lists

Explanation: Folders organize files by grouping related items within a file-system hierarchy. Archives are compressed or stored collections, while indexes and lists do not provide the normal file-storage structure.

276. Which of the following statements is true about Minicomputer and Microcomputer?

• A. Minicomputer works faster than Microcomputer
• B. Microcomputer works faster than Minicomputer
• C. Speed of both the computers is the same
• D. The speeds of both these computers cannot be compared with the speed of advanced

Explanation: In the traditional classification, minicomputers were larger and generally more powerful and faster than microcomputers. The comparison is historical and not a precise rule for every individual system.

277. Coded entries which are used to gain access to a computer system are called__________?

• A. Entry codes
• B. Passwords
• C. Security commands
• D. Code words

Explanation: Passwords are coded words or character strings used to authenticate a user and control access to a computer system. Entry codes and code words are informal terms, not the standard security term tested here.

278. Who is the father of Computer science?

• A. Allen Turing
• B. Charles Babbage
• C. Simur Cray
• D. Augusta Adaming

Explanation: Alan Turing is widely called the father of computer science because of his foundational work on algorithms, computability, and theoretical computing. The option says “Allen,” but it clearly intends Alan Turing.

279. File Management is responsibly of__________?

• A. Task Manager
• B. RAM
• C. BIOS
• D. Operating System

Explanation: The operating system manages files and folders, including creating, copying, moving, renaming, and deleting them. Task Manager monitors processes, while RAM and BIOS serve different functions.

280. Half of a byte is called?

• A. Transistor
• B. Compiler
• C. Nibble
• D. Binary Digit

Explanation: A byte contains 8 bits, so half a byte contains 4 bits and is called a nibble. A binary digit is only one bit, not half a byte.