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Computer Science MCQs

MCQs on Programming, Networking, Database and OS

179 Questions Subject Test
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161
Easy nts Uploaded: 09 Aug 2026

What is the purpose of a 'loop' in programming?

  • A Design interfaces
  • B Connect to internet
  • C Store data
  • D Repeat a block of code multiple times
162
Medium nts Uploaded: 13 Aug 2026

What is bandwidth throttling?

  • A Intentionally slowing down internet speed
  • B Increasing internet speed permanently
  • C Storing data in cache
  • D Encrypting network traffic
163
Medium nts Uploaded: 23 Aug 2026

What is the function of an operating system's file system?

  • A To process graphics
  • B To connect to the internet
  • C To organize and manage data storage on disks
  • D To manage printers
164
Easy fpsc ppsc nts Uploaded: 18 Jun 2026

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
165
Easy nts Uploaded: 20 Jun 2026

What does Ctrl+Home do in Excel?

  • A Go to first worksheet
  • B Go to cell A1
  • C Open Home tab
  • D Save workbook
166
Easy nts Uploaded: 07 Aug 2026

What is the primary purpose of an IP protocol version 6 (IPv6) over IPv4?

  • A Provide a larger address space
  • B Reduce internet speed
  • C Eliminate the need for DNS
  • D Remove security features
167
Easy nts Uploaded: 23 Aug 2026

Which key uniquely identifies a record in a database table?

  • A Primary Key
  • B Candidate Key
  • C Composite Key
  • D Foreign Key
168
Easy fpsc nts Uploaded: 20 Jun 2026

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

  • A HTTP
  • B SMTP
  • C FTP
  • D DNS
169
Easy nts Uploaded: 20 Jun 2026

Which protocol is used to automatically obtain network configuration information?

  • A HTTP
  • B DHCP
  • C DNS
  • D SSH
170
Easy fpsc nts Uploaded: 20 Jun 2026

What is the role of DNS in networking?

  • A Assign IP addresses
  • B Translate domain names to IP addresses
  • C Transfer files
  • D Encrypt network traffic
171
Easy ppsc nts Uploaded: 20 Jun 2026

What is cloud storage?

  • A Local disk storage
  • B Storage accessible via the internet
  • C RAM allocation
  • D CPU cache
172
Medium nts Uploaded: 13 Aug 2026

What is virtual memory?

  • A A type of cache
  • B Extra RAM chip
  • C Memory simulated using hard disk space
  • D A network storage
173
Easy nts Uploaded: 07 Aug 2026

Which device is used to input handwritten text into a computer?

  • A Printer
  • B Monitor
  • C Scanner
  • D Speaker
174
Easy nts Uploaded: 07 Aug 2026

Which of the following is a common cause of a memory leak in programming?

  • A Writing comments in code
  • B Using loops
  • C Failing to release unused memory
  • D Using too many variables
175
Medium nts Uploaded: 23 Aug 2026

What is the primary function of RAM in a computer?

  • A Temporary storage for actively used data
  • B Permanent data storage
  • C Displaying graphics
  • D Processing calculations
176
Easy fpsc nts Uploaded: 20 Jun 2026

What is the full form of VPN?

  • A Virtual Private Network
  • B Verified Public Network
  • C Virtual Program Node
  • D Visual Private Node
177
Medium css pms fpsc ppsc nts Uploaded: 25 Jun 2026

What type of communication occurs between a computer and a keyboard?

  • A Full-Duplex
  • B Simplex
  • C Half-Duplex
  • D Multiplex
178
Hard nts Uploaded: 13 Aug 2026

Which of the following is a compiled programming language?

  • A JavaScript
  • B PHP
  • C C++
  • D Python
179
Medium nts Uploaded: 13 Aug 2026

Which of the following best defines 'throughput' in computing?

  • A Storage capacity of memory
  • B Number of errors in a program
  • C Amount of data processed in a given time
  • D Time delay in a system
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