NTS NAT-ICS (Computer Science Track) Computer Science: Most Important MCQs with Answers

Practise NTS NAT-ICS (Computer Science Track) Computer Science most important MCQs in sets of about 20 questions with instant answers and explanations. This …

Loading sets…

NTS NAT-ICS (Computer Science Track) Computer Science Most Important sample MCQs

  1. Q1. What is the output of the expression 2 + 3 * 4?

    • A) 20
    • B) 14
    • C) 11
    • D) 24

    Answer: 14

  2. Q2. Which operator is used for bitwise XOR?

    • A) &
    • B) |
    • C) ^
    • D) ~

    Answer: ^

  3. Q3. What is the primary function of the Instruction Register (IR)?

    • A) To store the address of the next instruction
    • B) To store the current instruction being executed
    • C) To store the result of an operation
    • D) To store the data being transferred

    Answer: To store the current instruction being executed

  4. Q4. Which cache mapping technique maps a block to a specific cache line?

    • A) Direct Mapping
    • B) Associative Mapping
    • C) Set-Associative Mapping
    • D) None of the above

    Answer: Direct Mapping

  5. Q5. What is the hit ratio if 80 out of 100 memory accesses are found in the cache?

    • A) 0.2
    • B) 0.8
    • C) 0.5
    • D) 0.1

    Answer: 0.8

  6. Q6. A CPU has a clock cycle time of 2 ns. What is the clock speed?

    • A) 500 MHz
    • B) 1 GHz
    • C) 2 GHz
    • D) 4 GHz

    Answer: 1 GHz

  7. Q7. What is the main advantage of a pipelined processor?

    • A) Increased instruction-level parallelism
    • B) Reduced instruction execution time
    • C) Improved branch prediction
    • D) Simplified instruction decoding

    Answer: Increased instruction-level parallelism

  8. Q8. A computer system has 4GB of RAM. What is the minimum number of bits required to address each byte?

    • A) 32
    • B) 31
    • C) 30
    • D) 29

    Answer: 32

  9. Q9. What is the primary function of the Program Counter (PC)?

    • A) To store the current instruction
    • B) To store the address of the next instruction
    • C) To store the result of an operation
    • D) To store the data being transferred

    Answer: To store the address of the next instruction

  10. Q10. Which of the following is a type of cache coherence protocol?

    • A) MESI
    • B) FIFO
    • C) LRU
    • D) None of the above

    Answer: MESI

  11. Q11. What is the main disadvantage of a direct-mapped cache?

    • A) High cost
    • B) Low hit ratio
    • C) Conflict misses
    • D) None of the above

    Answer: Conflict misses

  12. Q12. A processor has a 5-stage pipeline. What is the maximum speedup achievable?

    • A) 2
    • B) 5
    • C) 10
    • D) None of the above

    Answer: 5

  13. Q13. Which of the following is a characteristic of a RISC processor?

    • A) Complex instruction set
    • B) Large number of addressing modes
    • C) Simple instruction set
    • D) None of the above

    Answer: Simple instruction set

  14. Q14. What is the main advantage of a multi-core processor?

    • A) Improved single-threaded performance
    • B) Increased instruction-level parallelism
    • C) Improved multi-threaded performance
    • D) None of the above

    Answer: Improved multi-threaded performance

  15. Q15. A computer system has a 2-way set-associative cache. What is the main advantage?

    • A) Reduced conflict misses
    • B) Improved hit ratio
    • C) Increased cache size
    • D) None of the above

    Answer: Reduced conflict misses

  16. Q16. What is the purpose of the Memory Buffer Register (MBR)?

    • A) To store the address of the memory location
    • B) To store the data being transferred
    • C) To store the current instruction
    • D) To store the result of an operation

    Answer: To store the data being transferred

  17. Q17. Which of the following is a type of parallelism?

    • A) Instruction-level parallelism
    • B) Data-level parallelism
    • C) Thread-level parallelism
    • D) All of the above

    Answer: All of the above

  18. Q18. What is the main disadvantage of a unified cache?

    • A) Increased complexity
    • B) Reduced performance
    • C) Conflict between instruction and data accesses
    • D) None of the above

    Answer: Conflict between instruction and data accesses

  19. Q19. A processor has a clock speed of 2 GHz. What is the clock cycle time?

    • A) 0.5 ns
    • B) 1 ns
    • C) 2 ns
    • D) None of the above

    Answer: 0.5 ns

  20. Q20. What is the primary function of the Control Unit?

    • A) To execute instructions
    • B) To manage data transfer
    • C) To generate control signals
    • D) To store data

    Answer: To generate control signals

What are most important Computer Science MCQs for NTS NAT-ICS (Computer Science Track)?

Most Important Computer Science MCQs are critical must-know MCQs to prioritise before the exam. On Imtehan they are grouped into short sets so you can review one topic at a time before moving to timed mocks.

How many NTS NAT-ICS (Computer Science Track) Computer Science most important questions can I practise?

Imtehan organises NTS NAT-ICS (Computer Science Track) Computer Science questions into multiple sets. Start with the sample questions below, then open a set to practise interactively with scoring and explanations.

Is NTS NAT-ICS (Computer Science Track) Computer Science most important practice free?

Yes - you can practise NTS NAT-ICS (Computer Science Track) Computer Science MCQs for free on Imtehan. Premium unlocks detailed analytics and unlimited mock attempts.