A. Disk unit
B. Control unit
C. ALU
D. Modem
✅ The correct answer is option C.
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
562. A symbol that modifies an action is known as
A. Compiler
B. Modifier
C. Interpreter
D. Mod
✅ The correct answer is option B.
563. The brain of any computer system is
A. ALU
B. Memory
C. CPU
D. Control unit
✅ The correct answer is option C.
564. A byte is comprised of:
A. One bit
B. Four bits
C. Eight bits
D. Sixteen bits
✅ The correct answer is option C.
565. CD-ROM is a
A. Semiconductor memory
B. Memory register
C. Magnetic memory
D. All of the above
✅ The correct answer is option E.
566. A digital device that processes data is known as
A. Data processor
B. Data entry
C. DBMS
D. Database
✅ The correct answer is option A.
567. Pick out the wrong statement.
A. Information stored in RAM can be changed by over writing it
B. Information stored in ROM cannot be changed by overwriting
C. Information can be stored in any location of RAM
D. Computer main memory can be accessed only sequentially
✅ The correct answer is option D.
568. A terminal having local processing capability is
A. KIPS
B. AI
C. Intelligent terminal
D. Optical terminal
✅ The correct answer is option C.
569. Time during which a job is processed by the computer is:
A. Execution Time
B. Delay Time
C. Real Time
D. Waiting Time
✅ The correct answer is option A.
570. Arithmetic logic unit I. perform arithmetic operations II. store data III. perform comparison IV. communicate with input devices from above the correct one is
A. I only
B. II only
C. I and II only
D. I and III only
✅ The correct answer is option D.