Computer Science
Multiple Choice
Questions
(MCQs) – Sets 29
with Detailed Explanations
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SET 29 – Computer Science MCQs
✅ No repetition from Sets 1–28
✅ 10 completely new questions
✅ Each explanation
Level: Class 9–10 / Beginners
1. What is a client in a network?
A. Main server
B. Network cable
C. Device that requests services
D. Storage unit
✅ Correct Answer: C
Explanation:
A client is a device or software that requests services or resources from another computer called a server. Examples include a web browser requesting web pages from a web server. Clients rely on servers for data, applications, and network resources in client-server architecture.
2. What is a server?
A. Input device
B. Storage device
C. Computer that provides services
D. Network cable
✅ Correct Answer: C
Explanation:
A server is a powerful computer or software that provides services, data, or resources to clients over a network. Examples include file servers, web servers, and email servers. Servers operate continuously and are designed to handle multiple client requests efficiently.
3. What is peer-to-peer (P2P) network?
A. Centralized network
B. Network with only servers
C. Network where all computers are equal
D. Wireless network
✅ Correct Answer: C
Explanation:
In a peer-to-peer network, all computers have equal roles and can act as both client and server. There is no central server. P2P networks are simple, low-cost, and suitable for small networks but lack strong security and centralized management.
4. What is client-server model?
A. No server
B. All devices equal
C. Central server provides services to clients
D. Wireless system
✅ Correct Answer: C
Explanation:
The client-server model is a network structure where a central server provides resources and services to multiple clients. It offers better security, centralized control, and easy management. This model is widely used in businesses, schools, and internet services.
5. What is network protocol?
A. Network cable
B. Hardware device
C. Set of rules for communication
D. Internet speed
✅ Correct Answer: C
Explanation:
A network protocol is a set of rules that define how data is transmitted and received over a network. Protocols ensure reliable communication between devices. Common examples include HTTP, FTP, and TCP/IP, which enable smooth data exchange.
6. What is TCP/IP?
A. Hardware
B. Software license
C. Basic internet communication protocol
D. Database
✅ Correct Answer: C
Explanation:
TCP/IP is a suite of protocols used for communication over the internet. TCP ensures reliable data delivery, while IP handles addressing and routing. Together, they form the foundation of modern networking and internet communication.
7. What is HTTP?
A. Programming language
B. File system
C. Protocol for web communication
D. Antivirus
✅ Correct Answer: C
Explanation:
HTTP stands for Hypertext Transfer Protocol. It is used for transferring web pages between a browser and a web server. HTTP defines how requests and responses are formatted, enabling users to access websites easily through the internet.
8. What is FTP?
A. Security tool
B. Web browser
C. Protocol for file transfer
D. Operating system
✅ Correct Answer: C
Explanation:
FTP stands for File Transfer Protocol. It is used to transfer files between computers over a network. FTP allows users to upload, download, and manage files on remote servers, commonly used in website management.
9. What is DNS?
A. Data network system
B. Domain Name System
C. Device number system
D. Digital network service
✅ Correct Answer: B
Explanation:
DNS translates human-readable domain names into IP addresses that computers understand. For example, it converts a website name into a numerical address. DNS makes internet usage easier by allowing users to remember names instead of numbers.
10. What is URL?
A. Internet protocol
B. Web browser
C. Address of a web resource
D. Network cable
✅ Correct Answer: C
Explanation:
A URL (Uniform Resource Locator) is the address used to access resources on the internet, such as web pages or files. It specifies the protocol, domain name, and path, enabling browsers to locate and display content correctly.
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