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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

51 Questions
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41
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
42
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
43
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
44
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
45
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
46
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
47
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
48
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
49
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
50
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
51
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
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