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.

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.
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