Computer Network MCQ – Improve Your Networking Skills with Online Quiz

Challenge your networking skills with these Computer Network MCQs. Practice multiple-choice questions on network types, protocols, and security to boost your expertise.

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Enhance your networking knowledge with expert-curated Computer Network MCQs. These multiple-choice questions cover essential topics like network protocols, security, and architecture. Perfect for students and professionals, this quiz helps you assess your understanding and prepare for exams or interviews. Test your skills now and strengthen your grasp on computer networks!

Explore a collection of Computer Network MCQs designed to help students, professionals, and competitive exam aspirants strengthen their understanding. These multiple-choice questions cover topics like network types, protocols, security, and more.

Computer Network Multiple Choice Questions and Answers

Question: What is a computer network?
Answer: A computer network is a collection of interconnected devices that communicate and share resources using protocols.

Question: Which protocol is used for web browsing?
Answer: HTTP and HTTPS are the primary protocols used for web browsing.

Question: What is the full form of IP in networking?
Answer: IP stands for Internet Protocol.

Question: Which device is used to connect multiple networks?
Answer: A router is used to connect multiple networks.

Question: What is the main function of a switch in networking?
Answer: A switch forwards data packets based on MAC addresses within a network.

Question: What is the difference between TCP and UDP?
Answer: TCP is connection-oriented, ensuring reliable data transfer, while UDP is connectionless and faster but does not guarantee delivery.

Question: Which network topology has a central hub?
Answer: Star topology has a central hub that connects all devices.

Question: What is the maximum length of an IPv4 address?
Answer: An IPv4 address is 32 bits long.

Question: What is an example of a private IP address?
Answer: 192.168.1.1 is an example of a private IP address.

Question: What layer of the OSI model does a router operate at?
Answer: A router operates at the Network layer (Layer 3) of the OSI model.

Question: What is the function of a firewall in networking?
Answer: A firewall protects a network by filtering incoming and outgoing traffic based on security rules.

Question: What is DNS used for in networking?
Answer: DNS (Domain Name System) translates domain names into IP addresses.

Question: Which type of network connects computers within a single building?
Answer: A Local Area Network (LAN) connects computers within a single building.

Question: What is the default port number for HTTPS?
Answer: The default port number for HTTPS is 443.

Question: What is the main purpose of subnetting in networking?
Answer: Subnetting divides a large network into smaller networks to improve efficiency and security.

Question: What does VPN stand for in networking?
Answer: VPN stands for Virtual Private Network.

Question: What is the function of an ARP in networking?
Answer: ARP (Address Resolution Protocol) maps IP addresses to MAC addresses.

Question: What is the primary purpose of DHCP?
Answer: DHCP (Dynamic Host Configuration Protocol) assigns IP addresses automatically to devices in a network.

Question: Which network device is used to extend a network’s range?
Answer: A repeater is used to extend a network’s range by amplifying signals.

Question: What is the purpose of ICMP in networking?
Answer: ICMP (Internet Control Message Protocol) is used for sending error messages and operational information in a network.

Question: What is an example of a transport layer protocol?
Answer: TCP and UDP are examples of transport layer protocols.

Question: What does NAT do in networking?
Answer: NAT (Network Address Translation) allows multiple devices to share a single public IP address.

Question: What is a MAC address?
Answer: A MAC address is a unique identifier assigned to a network interface card (NIC).

Question: What is a peer-to-peer network?
Answer: A peer-to-peer network is a decentralized network where each device acts as both a client and a server.

Question: Which wireless security protocol is the most secure?
Answer: WPA3 is the most secure wireless security protocol.

Question: What is the primary function of a proxy server?
Answer: A proxy server acts as an intermediary between clients and web servers to enhance security and privacy.

Question: What is the default subnet mask for a Class C network?
Answer: The default subnet mask for a Class C network is 255.255.255.0.

Question: What type of network is used for long-distance communication?
Answer: A Wide Area Network (WAN) is used for long-distance communication.

Question: What is the role of a gateway in networking?
Answer: A gateway connects two different networks and translates communication between them.

Question: What is the primary purpose of an intranet?
Answer: An intranet is a private network used within an organization for secure communication and collaboration.

Question: Which protocol is commonly used for sending emails?
Answer: SMTP (Simple Mail Transfer Protocol) is commonly used for sending emails.

Question: What is the purpose of the POP3 protocol?
Answer: POP3 (Post Office Protocol 3) is used for retrieving emails from a mail server.

Question: What is an example of a physical layer device?
Answer: A hub is an example of a physical layer device.

Question: What does SSID stand for in Wi-Fi networks?
Answer: SSID stands for Service Set Identifier.

Question: What is an example of a hybrid topology in networking?
Answer: A star-bus topology is an example of a hybrid topology.

Question: What is the function of a load balancer in networking?
Answer: A load balancer distributes network traffic across multiple servers to improve performance and reliability.

Question: What is the primary role of a data link layer?
Answer: The data link layer ensures error-free data transfer between devices in the same network.

Question: What is an example of an application layer protocol?
Answer: HTTP, FTP, and SMTP are examples of application layer protocols.

Question: What is the purpose of an Ethernet cable?
Answer: An Ethernet cable is used for wired network connections to transfer data between devices.

Question: Which network topology is the most fault-tolerant?
Answer: Mesh topology is the most fault-tolerant because every device is connected to multiple others.

Question: What is a man-in-the-middle attack in networking?
Answer: A man-in-the-middle attack occurs when an attacker intercepts and alters communication between two parties.

Question: What is the full form of VoIP?
Answer: VoIP stands for Voice over Internet Protocol.

Question: What is the purpose of a honeypot in cybersecurity?
Answer: A honeypot is a decoy system designed to attract and detect cyber attackers.

Question: What is a botnet in networking?
Answer: A botnet is a network of compromised computers controlled remotely by an attacker.

Question: What is a packet in networking?
Answer: A packet is a small unit of data transmitted over a network.

Question: What is the function of a modem?
Answer: A modem converts digital signals into analog and vice versa for internet connectivity.

Question: What is the main advantage of fiber optic cables over copper cables?
Answer: Fiber optic cables provide faster data transmission and greater bandwidth than copper cables.

Question: What is the difference between a static and dynamic IP address?
Answer: A static IP address is manually assigned and does not change, while a dynamic IP address is assigned by a DHCP server and may change over time.

Best Indian Books for Computer Network MCQs with Author and Publication

1. Computer Networks MCQ – By Sanjay Sharma (Katson Books)

This book covers networking basics, OSI and TCP/IP models, network security, and wireless communication. It provides MCQs with detailed explanations for each topic.

2. MCQs in Computer Networks – By Manoj Dole (Independently Published)

Includes a variety of multiple-choice questions on networking protocols, network devices, and data communication, making it useful for competitive exams.

3. Computer Network: Multiple Choice Questions & Answers – By Arshad Iqbal (Bushra Arshad Publications)

Focuses on important networking concepts such as routing, switching, network topologies, and security-related questions.

4. Computer Networks & Internet MCQs – By S. Chandra (S. Chand Publishing)

A comprehensive collection of MCQs on the internet, networking models, and security concepts, ideal for students and professionals.

5. Data Communication & Computer Networks MCQ – By N. B. Venkateswarlu (Neelkamal Publications)

This book covers wired and wireless networks, error detection techniques, and transmission mediums with a strong emphasis on conceptual clarity.

6. Computer Networks MCQs for Competitive Exams – By Dr. K. Murugesan (Laxmi Publications)

A great resource for students preparing for GATE, NET, and other IT-related competitive exams, featuring scenario-based questions.

7. MCQs on Computer Networks – By S. Ramesh (McGraw Hill Education)

Includes application-based questions, real-world networking scenarios, and solutions for understanding protocols and security in-depth.

8. Fundamentals of Computer Networking MCQs – By Rajesh Kumar (BPB Publications)

Covers network fundamentals, addressing schemes, and transport layer protocols with easy-to-understand explanations.

9. Networking Essentials MCQs – By Sumit Arora (Pearson India)

This book provides topic-wise MCQs on IP addressing, subnetting, LAN, WAN, and VPN concepts, along with practical problem-solving questions.

10. Objective Computer Networks MCQs – By J. P. Tamang (TechKnowledge Publications)

Designed for IT and engineering students, this book includes multiple-choice questions on cloud networking, network virtualization, and cryptography.

11. GATE & UGC NET Computer Network MCQs – By R. Gupta (Ramesh Publishing House)

Perfect for aspirants of GATE and NET, with in-depth multiple-choice questions covering network models, wireless networks, and cybersecurity.

12. MCQs on Wireless Communication & Networks – By P. S. Nair (Dreamtech Press)

Includes questions on mobile networks, wireless communication standards, and modern networking technologies.

13. Computer Network MCQs with Explanations – By Prashant Kumar (Vikas Publishing)

Features topic-wise MCQs with detailed explanations, suitable for job interviews and academic assessments.

14. Networking for Beginners MCQs – By Amit Sharma (S. K. Kataria & Sons)

An excellent book for beginners, covering the basics of networking, network layers, and security fundamentals.

15. Computer Networking Objective Questions – By Deepak Agarwal (Thakur Publications)

This book contains practice questions and solutions for understanding various networking concepts, ideal for university exams.

16. Internet & Networking MCQs – By R. K. Pathak (TechMax Publications)

Contains MCQs on networking principles, cybersecurity, cloud computing, and advanced networking models.

17. Advanced Computer Networking MCQs – By Vipin Desai (Wiley India)

A book dedicated to complex networking concepts, ideal for advanced learners preparing for certifications like CCNA and CEH.

18. Networking MCQs for Beginners & Experts – By P. Bhattacharya (TMH Publications)

Includes objective questions on modern networking trends, including IoT and software-defined networking (SDN).

19. MCQs on Network Security & Cryptography – By S. Srinivasan (New Age International)

A specialized book focusing on security protocols, firewalls, and encryption techniques.

20. Wireless Networks & IoT MCQs – By R. Mehta (BPB Publications)

Covers wireless networking, Internet of Things, and cybersecurity with a mix of theoretical and application-based MCQs.

Mastering computer networks requires a solid grasp of network models, protocols, security, and communication systems. Multiple-choice questions (MCQs) help reinforce these concepts by testing your knowledge in a structured format. Whether you're a student, job aspirant, or IT professional, practicing MCQs enhances your understanding and prepares you for exams and interviews.

Networking MCQs cover a wide range of topics, from fundamental concepts to advanced protocols. Questions typically include topics like OSI and TCP/IP models, subnetting, wireless networks, and network security. Each question tests your analytical and problem-solving skills, making it easier to apply theoretical knowledge in practical scenarios.

One of the most commonly asked questions in computer networking is related to the OSI model. Understanding how data flows through its seven layers is crucial for troubleshooting and network design. Questions on this topic often focus on identifying the functions of each layer, protocols associated with them, and how data encapsulation works.

IP addressing and subnetting are other critical areas. MCQs in this section test your ability to calculate subnet masks, determine host availability, and configure IP addresses in different network classes. Many competitive exams and job interviews include subnetting problems to assess logical thinking and practical networking skills.

Another major focus area in networking MCQs is routing and switching. Questions often cover topics like static and dynamic routing, differences between RIP, OSPF, and BGP protocols, and how switches handle data forwarding. Knowing the differences between layer 2 and layer 3 devices can give you an edge in solving these questions.

Security-related questions play a key role in modern networking. MCQs on firewalls, VPNs, encryption techniques, and cybersecurity threats help learners understand how networks are protected from attacks. Questions may include identifying different types of malware, authentication methods, and secure communication protocols like SSL/TLS.

With the rise of wireless communication, MCQs on Wi-Fi standards, Bluetooth, mobile networks, and IoT have gained significance. These questions test knowledge of network infrastructure, wireless signal types, and security challenges associated with wireless networks.

Practicing MCQs regularly helps retain key concepts and improves speed in solving complex networking problems. Many students preparing for GATE, UGC NET, CCNA, CEH, and other IT certification exams rely on MCQs to evaluate their knowledge. Many books and online resources provide topic-wise MCQs with explanations, making it easier to revise and practice.

For IT professionals, network troubleshooting is an essential skill, and MCQs related to network errors, performance optimization, and diagnostic tools help in real-world problem-solving. Understanding how to use tools like ping, traceroute, and netstat can be beneficial in answering such questions.

Whether you're a beginner or an advanced learner, solving Computer Network MCQs consistently is a great way to enhance your networking knowledge. Keep practicing, stay updated with new networking trends, and strengthen your problem-solving abilities to excel in exams and interviews.

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