Computer Science MCQS

Computer Science MCQ with detailed explanations for students & freshers preparing for entrance exams, various tests, interviews, competitive exams like GATE exam, interview, competitive examination and entrance exam.

📚 Table of Content

Which layer of the OSI model is responsible for routing?

A. Physical

B. Data Link

C. Network

D. Transport

Correct answer is: C. Network

Multitasking is an extension of:

A. Multiprogramming

B. Time-sharing

C. Batch processing

D. Serial processing

Correct answer is: B. Time-sharing

What is the port number for HTTPS?

A. 80

B. 21

C. 443

D. 25

Correct answer is: C. 443

Virtual memory is typically located on:

A. RAM

B. Hard Disk

C. CPU Cache

D. ROM

Correct answer is: B. Hard Disk

Which protocol is used to assign IP addresses automatically?

A. DNS

B. DHCP

C. HTTP

D. FTP

Correct answer is: B. DHCP

Which command in Linux is used to list files in a directory?

A. dir

B. ls

C. list

D. cd

Correct answer is: B. ls

The device used to connect two different network architectures is:

A. Bridge

B. Hub

C. Gateway

D. Switch

Correct answer is: C. Gateway

Ping command uses which protocol?

A. TCP

B. UDP

C. ICMP

D. SMTP

Correct answer is: C. ICMP

Which topology requires a central controller or hub?

A. Mesh

B. Star

C. Bus

D. Ring

Correct answer is: B. Star

CPU stands for:

A. Central Process Unit

B. Central Processing Unit

C. Computer Personal Unit

D. Central Program Unit

Correct answer is: B. Central Processing Unit

CPU is the main processing unit of computer.