Join WhatsApp ChannelDaily MCQs & Exam Updates

Computer Science MCQs

MCQs on Programming, Networking, Database and OS

91 Questions Subject Test
Subject Preparation Guide

Prepare Computer Science with confidence

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

Computer BasicsProgrammingNetworksDatabases
Recommended for academic classes, IT tests and computer portions of competitive examinations.
Computer Science preparation illustration
Subject Test

Test your Computer Science preparation

Questions are tracked as practiced when you open Show Answer & Explanation. Tracking stays only in this browser tab and no subject-test result is saved.

Practiced MCQs
0 / 91
Use the MCQs you already prepared, or launch a random test from the full subject bank.
No login required Result is not saved Choose your own MCQ count & timer
Choose your test mode
Choose any number up to 91 available MCQs.
Enter 0 for no timer, or choose 1–300 minutes.
Tip: prepare some MCQs first, then start a quick self-check from My Practiced MCQs to test exactly what you studied.
Filter: All Exams css pms fpsc ppsc nts | All Easy Medium Hard
61
Medium css pms fpsc ppsc nts Uploaded: 01 Jul 2026

Which data structure is primarily used by the Depth-First Search (DFS) algorithm?

  • A Queue
  • B Hash Table
  • C Stack
  • D Heap
View Answer & Explanation Permalink
62
Medium fpsc Uploaded: 23 Aug 2026

Which wireless technology is commonly used for short-range device connections?

  • A Bluetooth
  • B Fiber Optic
  • C Ethernet
  • D DSL
View Answer & Explanation Permalink
63
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

Who co-invented the World Wide Web (WWW) alongside Robert Cailliau?

  • A Tom Berners
  • B Mark Zuckerberg
  • C Tim Berners-Lee
  • D Bill Gates
View Answer & Explanation Permalink
64
Medium fpsc Uploaded: 09 Aug 2026

What does 'API' stand for?

  • A Automated Program Interface
  • B Application Process Integration
  • C Application Programming Interface
  • D Application Protocol Interface
View Answer & Explanation Permalink
65
Medium fpsc Uploaded: 23 Aug 2026

What is the purpose of a backup?

  • A To create a copy of data for recovery
  • B To speed up the computer
  • C To install software
  • D To delete unnecessary files
View Answer & Explanation Permalink
66
Medium fpsc nts Uploaded: 20 Jun 2026

Which Access key uniquely identifies each record?

  • A Foreign Key
  • B Primary Key
  • C Composite Key
  • D Candidate Key
View Answer & Explanation Permalink
67
Medium fpsc Uploaded: 23 Aug 2026

What is a nibble in computing?

  • A A group of 4 bits
  • B A group of 2 bits
  • C A group of 16 bits
  • D A group of 8 bits
View Answer & Explanation Permalink
68
Medium fpsc nts Uploaded: 20 Jun 2026

Which Excel function counts non-empty cells?

  • A COUNT()
  • B COUNTA()
  • C COUNTIF()
  • D SUM()
View Answer & Explanation Permalink
69
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
View Answer & Explanation Permalink
70
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
View Answer & Explanation Permalink
71
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

What is the main purpose of a Firewall in a computer network?

  • A To prevent unauthorized access
  • B To remove all viruses from a computer
  • C To increase internet speed
  • D To store network Data
View Answer & Explanation Permalink
72
Medium css fpsc Uploaded: 20 Jun 2026

What is the purpose of an index in a database?

  • A Reduce security
  • B Improve query performance
  • C Store backups
  • D Encrypt records
View Answer & Explanation Permalink
73
Medium css pms fpsc ppsc nts Uploaded: 01 Jul 2026

What is the full form of "NLP" in Artificial Intelligence and Computer Science?

  • A Numeric Learning Program
  • B Network Layer Protocol
  • C Neural Logic Processing
  • D Natural Language Processing
View Answer & Explanation Permalink
74
Medium css fpsc Uploaded: 20 Jun 2026

Which layer of OSI handles physical transmission of bits?

  • A Network
  • B Transport
  • C Physical
  • D Session
View Answer & Explanation Permalink
75
Medium css fpsc Uploaded: 20 Jun 2026

Which OSI layer is responsible for end-to-end communication?

  • A Network Layer
  • B Data Link Layer
  • C Transport Layer
  • D Session Layer
View Answer & Explanation Permalink
76
Medium fpsc ppsc Uploaded: 20 Jun 2026

What is Track Changes used for in Word?

  • A Database management
  • B Reviewing edits
  • C Creating charts
  • D Printing documents
View Answer & Explanation Permalink
77
Medium css fpsc Uploaded: 20 Jun 2026

What is artificial intelligence?

  • A Computer hardware
  • B Simulation of human intelligence by machines
  • C Network design
  • D Database storage
View Answer & Explanation Permalink
78
Medium fpsc Uploaded: 13 Aug 2026

Which of the following is a function of the 'Mail Merge' feature in Word?

  • A Checking spelling
  • B Creating personalized letters for multiple recipients
  • C Formatting text
  • D Inserting images
View Answer & Explanation Permalink
79
Medium fpsc Uploaded: 23 Aug 2026

Which loop is guaranteed to execute at least once?

  • A For loop
  • B Do-while loop
  • C Nested loop
  • D While loop
View Answer & Explanation Permalink
80
Medium css pms fpsc ppsc nts Uploaded: 22 Jun 2026

What is the default port number for HTTPS?

  • A 21
  • B 25
  • C 80
  • D 443
View Answer & Explanation Permalink
All Subjects
Biology 210 Chemistry 417 Computer Science 601 Current Affairs 1,274
1–4 of 11Auto-changing every 5s
Academic Subjects
Physics9th Class 248
View All Academic Classes
Mock Tests
Quick Test (20 Q) Full Mock Test
Practiced MCQs0 / 91