Join WhatsApp ChannelDaily MCQs & Exam Updates

Computer Science MCQs

MCQs on Programming, Networking, Database and OS

16 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 / 16
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 16 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
1
Hard ppsc Uploaded: 23 Aug 2026

What is the term for unwanted repetitive email messages?

  • A Cache
  • B Cookies
  • C Spam
  • D Malware
View Answer & Explanation Permalink
2
Hard ppsc Uploaded: 23 Aug 2026

What does CAPTCHA stand for functionally?

  • A A test to distinguish humans from bots
  • B A programming language
  • C A type of firewall
  • D A database key
View Answer & Explanation Permalink
3
Hard ppsc Uploaded: 07 Aug 2026

Which of the following is an example of an operating system?

  • A Windows
  • B MS Word
  • C Excel
  • D Photoshop
View Answer & Explanation Permalink
4
Hard ppsc Uploaded: 13 Aug 2026

What is the time complexity of binary search?

  • A O(n)
  • B O(n^2)
  • C O(log n)
  • D O(1)
View Answer & Explanation Permalink
5
Hard ppsc Uploaded: 23 Aug 2026

What is the function of a hub in networking?

  • A To route data intelligently
  • B To store files
  • C To broadcast data to all connected devices
  • D To encrypt data
View Answer & Explanation Permalink
6
Hard ppsc Uploaded: 13 Aug 2026

Which of the following is used to protect data through scrambling?

  • A Firewall
  • B Backup
  • C Encryption
  • D Antivirus
View Answer & Explanation Permalink
7
Hard ppsc Uploaded: 13 Aug 2026

What is freeware?

  • A Software available for free use
  • B Malicious software
  • C Software with a mandatory license fee
  • D A hardware component
View Answer & Explanation Permalink
8
Hard ppsc Uploaded: 13 Aug 2026

Which company developed the iOS operating system?

  • A Google
  • B Samsung
  • C Apple
  • D Microsoft
View Answer & Explanation Permalink
9
Hard ppsc Uploaded: 07 Aug 2026

What does WWW stand for?

  • A World Wide Wire
  • B Wide World Web
  • C World Wide Web
  • D World Web Wide
View Answer & Explanation Permalink
10
Hard ppsc Uploaded: 13 Aug 2026

What does DBMS stand for?

  • A Database Management System
  • B Data Backup Management System
  • C Database Monitoring System
  • D Data Base Modeling System
View Answer & Explanation Permalink
11
Hard ppsc Uploaded: 09 Aug 2026

What is the function of 'cache memory'?

  • A Provide internet access
  • B Display graphics
  • C Permanently store files
  • D Store frequently accessed data for quick access
View Answer & Explanation Permalink
12
Hard ppsc Uploaded: 09 Aug 2026

Which of the following is a benefit of using 'SSD' over 'HDD'?

  • A Faster data access speed
  • B Larger physical size
  • C Lower cost per gigabyte
  • D More moving parts
View Answer & Explanation Permalink
13
Hard ppsc Uploaded: 13 Aug 2026

Which of the following is an example of an embedded system?

  • A Web server
  • B Cloud storage
  • C Desktop computer
  • D Digital wristwatch with a microcontroller
View Answer & Explanation Permalink
14
Hard ppsc Uploaded: 13 Aug 2026

What does ACID stand for in database transactions?

  • A Atomicity, Consistency, Isolation, Durability
  • B Atomic, Complete, Isolated, Direct
  • C Access, Control, Integrity, Data
  • D Accuracy, Consistency, Integrity, Data
View Answer & Explanation Permalink
15
Hard ppsc Uploaded: 13 Aug 2026

Which of these is an object-oriented programming language?

  • A Machine Language
  • B Assembly
  • C Java
  • D C
View Answer & Explanation Permalink
16
Hard ppsc Uploaded: 07 Aug 2026

What is the function of a firewall?

  • A Compile source code
  • B Monitor and control network traffic for security
  • C Increase processing speed
  • D Store large files
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 / 16