A. Register
B. ALU
C. Control unit
D. Store location
✅ The correct answer is option D.
Basics of Computer Science MCQs
Strengthen your fundamental knowledge with our Basics of Computer Science MCQs with answers and explanations. Our collection covers key topics such as computer fundamentals, hardware and software, operating systems, networking basics, databases, programming concepts, and internet technologies. These multiple-choice questions are designed for students, competitive exam aspirants, and professionals preparing for NTS, PPSC, FPSC, CSS, PMS, university entry tests, and IT job assessments. Practice online to improve your understanding, enhance problem-solving skills, and excel in exams with our updated Basics of Computer Science MCQs
422. An instruction that transfers program control to one or more possible paths is known as
A. Utility program
B. System software
C. Broadband channel
D. Application program
✅ The correct answer is option C.
423. Which printer is very commonly used for desk-top publishing?
A. Laser printer
B. Ink-jet printer
C. Daisy wheel printer
D. Dot-matrix printer
✅ The correct answer is option A.
424. A disk’s content that is recorded at the time of manufacture and cannot be changed or erased by user is –
A. Read-only
B. Memory-only
C. Run-only
D. Write-only
✅ The correct answer is option A.
425. The most common input device used today is
A. Motherboard
B. Track ball
C. Scanner
D. Mouse
✅ The correct answer is option E.
426. The operation of a digital computer is based on _____ principle.
A. counting
B. measuring
C. electronic
D. logical
✅ The correct answer is option A.
427. A storage device which is used to store data & information external to the main storage is known as
A. Buffer
B. Backing storage
C. PROM
D. Accumulator
✅ The correct answer is option B.
428. High-level languages are not concerned with computer but with
A. Assembler
B. Machine code
C. Compiler
D. All of the above
✅ The correct answer is option A.
429. The size of commonly used floppy disk is
A. 4.5″
B. 3.5″
C. 3.25″
D. 5.5″
✅ The correct answer is option B.
430. Conversion of an octal number 208 to its binary number is
A. 100002
B. 101112
C. 101102
D. 111102
✅ The correct answer is option A.