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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

601 Questions Subject Test

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Strengthen your knowledge of computer fundamentals, hardware, software, programming, networks, databases and information technology.

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421

Easy nts Uploaded: 20 Jun 2026

Which protocol retrieves email messages from a mail server?

A POP3
B SMTP
C FTP
D HTTP

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422

Medium nts Uploaded: 13 Aug 2026

What is the purpose of RAID in storage systems?

A Encrypt stored data
B Compile source code
C Combine multiple disks for redundancy or performance
D Manage user accounts

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423

Medium nts Uploaded: 23 Aug 2026

Which of the following best describes edge computing?

A A network topology
B Processing data only in the cloud
C A type of database
D Processing data closer to its source rather than a centralized location

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424

Hard nts Uploaded: 13 Aug 2026

Which of the following is an example of an interpreted language?

A Assembly
B C++
C Python
D C

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425

Easy css Uploaded: 07 Aug 2026

Which data structure uses LIFO order?

A Stack
B Queue
C Linked List
D Array

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426

Medium ppsc Uploaded: 09 Aug 2026

What is the function of 'RAM slots' on a motherboard?

A Connect to internet
B Hold memory modules
C Store permanent data
D Display graphics

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427

Medium nts Uploaded: 23 Aug 2026

Which of the following is a linear data structure?

A Hash Table
B Graph
C Array
D Tree

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428

Easy fpsc nts Uploaded: 20 Jun 2026

What is malware?

A Network cable
B Malicious software
C Database table
D Operating system

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429

Medium css Uploaded: 09 Aug 2026

What is the main function of an assembler?

A Convert assembly language to machine code
B Store data permanently
C Run applications
D Manage files

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430

Medium ppsc Uploaded: 13 Aug 2026

Which of the following best describes 'latency' in networking?

A Total data transferred
B Delay before data transfer begins
C Storage capacity
D Number of devices connected

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431

Medium fpsc Uploaded: 07 Aug 2026

What is the primary difference between a process and a thread?

A A process has its own memory space; threads share memory within a process
B Threads require separate operating systems
C Processes cannot run concurrently
D Threads always run slower than processes

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432

Medium css Uploaded: 23 Aug 2026

What is the base of the octal number system?

A 8
B 2
C 16
D 10

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433

Medium css pms Uploaded: 20 Jun 2026

Which data structure is most suitable for implementing recursion?

A Queue
B Array
C Stack
D Heap

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434

Easy css Uploaded: 23 Aug 2026

What is firmware?

A A database system
B A network protocol
C A type of virus
D Permanent software programmed into hardware

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435

Hard nts Uploaded: 09 Aug 2026

What does 'ALU' stand for in computer architecture?

A Arithmetic Logic Unit
B Advanced Logic Unit
C Arithmetic Language Unit
D Automated Logic Unit

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436

Hard fpsc Uploaded: 13 Aug 2026

Which function in Excel is used to sum a range of cells?

A COUNT
B MAX
C AVERAGE
D SUM

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437

Medium nts Uploaded: 07 Aug 2026

Which of the following best describes 'machine learning'?

A A file compression technique
B A type of computer hardware
C A network security protocol
D A subset of AI where systems learn from data

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438

Hard nts Uploaded: 23 Aug 2026

What is the function of a modem?

A To manage printers
B To store files
C To modulate and demodulate signals for internet connectivity
D To display graphics

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439

Medium css fpsc Uploaded: 20 Jun 2026

What does VLOOKUP do in Excel?

A Creates charts
B Searches values vertically
C Deletes rows
D Sorts data

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440

Hard css Uploaded: 13 Aug 2026

What does 'booting' refer to in computing?

A Deleting files
B Shutting down a system
C Installing software
D Starting up a computer

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