Join WhatsApp ChannelDaily MCQs & Exam Updates

Computer Science MCQs

MCQs on Programming, Networking, Database and OS

76 Questions
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
Filter: All Exams css pms fpsc ppsc nts | All Easy Medium Hard
61
Easy ppsc nts

Which command is used to add new records to a database table?

  • A UPDATE
  • B SELECT
  • C INSERT
  • D ALTER
Permalink
Correct Answer: Option C — INSERT
Explanation: The INSERT statement adds new rows into a database table and is one of the most common SQL operations.
Submitted by: PaperMCQs
62
Medium fpsc nts

Which sorting algorithm repeatedly selects the smallest element and places it in the correct position?

  • A Merge Sort
  • B Quick Sort
  • C Selection Sort
  • D Heap Sort
Permalink
Correct Answer: Option C — Selection Sort
Explanation: Selection Sort repeatedly finds the minimum element from the unsorted portion and places it at the beginning. It is simple but inefficient for large datasets.
Submitted by: PaperMCQs
63
Easy ppsc nts

Which protocol is used to automatically assign IP addresses to devices on a network?

  • A DNS
  • B DHCP
  • C SMTP
  • D SNMP
Permalink
Correct Answer: Option B — DHCP
Explanation: Dynamic Host Configuration Protocol automatically assigns IP addresses and network configuration information to devices, simplifying network administration.
Submitted by: PaperMCQs
64
Easy fpsc nts

Which protocol translates domain names into IP addresses?

  • A HTTP
  • B FTP
  • C DNS
  • D SSH
Permalink
Correct Answer: Option C — DNS
Explanation: The Domain Name System (DNS) converts human-readable domain names into numerical IP addresses. This translation allows users to access websites using easy-to-remember names instead of complex numeric addresses.
Submitted by: PaperMCQs
65
Easy ppsc nts

Which database key uniquely identifies each record in a table?

  • A Foreign Key
  • B Candidate Key
  • C Primary Key
  • D Composite Key
Permalink
Correct Answer: Option C — Primary Key
Explanation: A Primary Key uniquely identifies each record in a database table. It cannot contain duplicate values or NULL values and ensures entity integrity within relational database systems.
Submitted by: PaperMCQs
66
Easy nts

What does URL stand for?

  • A Universal Resource Locator
  • B Uniform Resource Locator
  • C Unified Resource Link
  • D Universal Retrieval Link
Permalink
Correct Answer: Option B — Uniform Resource Locator
Explanation: A Uniform Resource Locator (URL) specifies the address of a resource on the Internet. It identifies the protocol and location needed to access web pages, files, and other online services.
Submitted by: PaperMCQs
67
Easy ppsc nts

Which SQL command is used to retrieve data from a database?

  • A INSERT
  • B UPDATE
  • C SELECT
  • D DELETE
Permalink
Correct Answer: Option C — SELECT
Explanation: The SELECT statement retrieves data from one or more database tables. It is one of the most frequently used SQL commands and supports filtering, sorting, grouping, and joining data for analysis and reporting.
Submitted by: PaperMCQs
68
Easy fpsc nts

Which protocol is primarily used for sending emails over the Internet?

  • A HTTP
  • B SMTP
  • C FTP
  • D DNS
Permalink
Correct Answer: Option B — SMTP
Explanation: Simple Mail Transfer Protocol (SMTP) is the standard protocol used for sending email messages between servers and from clients to servers. It works alongside protocols such as POP3 and IMAP, which are used for receiving emails.
Submitted by: PaperMCQs
69
Easy ppsc nts

What is the primary function of an operating system?

  • A Create websites
  • B Manage hardware and software resources
  • C Compile programs
  • D Design databases
Permalink
Correct Answer: Option B — Manage hardware and software resources
Explanation: An operating system acts as an intermediary between users and computer hardware. It manages memory, processes, files, devices, and security while providing services that allow applications to run efficiently and reliably.
Submitted by: PaperMCQs
70
Easy nts

Which number system is directly understood by a computer?

  • A Decimal
  • B Binary
  • C Octal
  • D Hexadecimal
Permalink
Correct Answer: Option B — Binary
Explanation: Computers operate using electronic circuits that recognize only two states, represented as 0 and 1. Therefore, all data and instructions are ultimately processed in binary form, making binary the fundamental language of computing systems.
Submitted by: PaperMCQs
71
Easy fpsc nts

Which type of memory loses its contents when power is turned off?

  • A ROM
  • B Flash Memory
  • C RAM
  • D Hard Disk
Permalink
Correct Answer: Option C — RAM
Explanation: Random Access Memory (RAM) is volatile memory, meaning its contents are lost when power is removed. RAM temporarily stores data and instructions currently being used by the CPU, enabling fast access and efficient processing.
Submitted by: PaperMCQs
72
Easy fpsc ppsc nts

The internet protocol "HTTP" stands for:

  • A Hyper Text Transfer Protocol
  • B High Tech Transfer Protocol
  • C Hyper Text Transmission Protocol
  • D Hyper Transfer Text Protocol
Permalink
Correct Answer: Option A — Hyper Text Transfer Protocol
Explanation: HTTP stands for HyperText Transfer Protocol. It is the foundation of data communication on the World Wide Web. HTTPS (S for Secure) is its encrypted version.
Submitted by: PaperMCQs
73
Easy fpsc ppsc nts

What does RAM stand for?

  • A Random Access Memory
  • B Read Access Memory
  • C Rapid Access Memory
  • D Random Application Memory
Permalink
Correct Answer: Option A — Random Access Memory
Explanation: RAM stands for Random Access Memory. It is a type of volatile memory that temporarily stores data that the CPU is currently using. Data is lost when power is turned off.
Submitted by: PaperMCQs
74
Easy fpsc ppsc nts

What is the full form of HTML?

  • A Hyper Text Markup Language
  • B High Text Making Language
  • C Hyper Transfer Markup Language
  • D High Technology Markup Language
Permalink
Correct Answer: Option A — Hyper Text Markup Language
Explanation: HTML stands for HyperText Markup Language. It is the standard markup language for creating web pages and web applications.
Submitted by: PaperMCQs
75
Easy ppsc nts

Which of the following is NOT an operating system?

  • A Windows 11
  • B Ubuntu Linux
  • C Microsoft Word
  • D macOS Ventura
Permalink
Correct Answer: Option C — Microsoft Word
Explanation: Microsoft Word is a word processing application software, not an operating system. Windows, Ubuntu, and macOS are all operating systems that manage computer hardware and software.
Submitted by: PaperMCQs
76
Easy fpsc ppsc nts

What does CPU stand for?

  • A Central Processing Unit
  • B Central Program Unit
  • C Computer Processing Unit
  • D Central Processor Utility
Permalink
Correct Answer: Option A — Central Processing Unit
Explanation: CPU stands for Central Processing Unit. It is the primary component of a computer that performs most of the processing. It is often called the "brain" of the computer.
Submitted by: PaperMCQs
All Subjects
Biology 100 Chemistry 99 Computer Science 120 Current Affairs 386
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