Computer Networking MCQ | SET – 03
Introduction
In the dynamic field of computer networking, having a strong understanding of the fundamental concepts is essential. To test and enhance your knowledge, we have compiled a comprehensive set of multiple-choice questions (MCQs) on computer networking. These questions cover various topics, ranging from network protocols and architectures to network security and troubleshooting.
Each question is accompanied by a detailed answer and explanation to ensure a thorough understanding of the concepts. Let’s dive in and explore the exciting world of computer networking!
Here are some multiple-choice questions about Computer Networking MCQ | SET – 03 along with their answers and explanations. Here are 20 Questions for you:
Question 1: Which network protocol is responsible for addressing and routing packets across different networks?
a) TCP/IP
b) HTTP
c) FTP
d) SMTP
Answer: a) TCP/IP
Explanation: The Transmission Control Protocol/Internet Protocol (TCP/IP) is the core network protocol suite used for addressing, routing, and delivering data packets across interconnected networks. It provides the foundation for Internet communication and is widely used in both local and global networks.
Question 2: What is the purpose of the Domain Name System (DNS) in computer networking?
a) To encrypt network traffic
b) To translate domain names to IP addresses
c) To establish secure connections
d) To manage network access control
Answer: b) To translate domain names to IP addresses
Explanation: The Domain Name System (DNS) is responsible for translating human-readable domain names (such as www.example.com) into their corresponding IP addresses (such as 192.0.2.1). This translation allows computers to locate and communicate with web servers and other network resources using meaningful domain names.
Question 3: Which network architecture allows for centralized control and administration of network resources?
a) Peer-to-Peer (P2P)
b) Client-Server
c) Hybrid
d) Mesh
Answer: b) Client-Server
Explanation: In a client-server network architecture, a central server manages and controls network resources, while client devices request and utilize those resources. This architecture enables centralized administration, efficient resource utilization, and enhanced security control.
Question 4: What is the purpose of a firewall in network security?
a) To block unauthorized access to a network
b) To encrypt network traffic
c) To prevent hardware failures
d) To manage network bandwidth
Answer: a) To block unauthorized access to a network
Explanation: A firewall acts as a barrier between a trusted internal network and an untrusted external network, such as the Internet. It monitors incoming and outgoing network traffic and applies security rules to block unauthorized access, protect against malicious activities, and safeguard sensitive data.
Question 5: Which security protocol ensures secure communication over the Internet?
a) SSL/TLS
b) POP3
c) ICMP
d) DHCP
Answer: a) SSL/TLS
Explanation: The Secure Sockets Layer/Transport Layer Security (SSL/TLS) protocol ensures secure communication between client and server applications over the internet. It encrypts data, verifies the authenticity of the server, and establishes a secure connection to protect sensitive information from unauthorized access or tampering.
Question 6: What does the acronym “PING” stand for in network troubleshooting?
a) Packet Inspection Next Generation
b) Path Identification Network Gateway
c) Packet Inter-Network Groper
d) Protocol Investigation Network Group
Answer: c) Packet Inter-Network Groper
Explanation: PING is a network troubleshooting command used to test the reachability of a network device or host. It sends an Internet Control Message Protocol (ICMP) echo request packet and waits for an ICMP echo reply to measure the round-trip time and determine if the destination is reachable.
Question 7: What is the purpose of traceroute in network troubleshooting?
a) To measure network bandwidth
b) To identify network vulnerabilities
c) To identify the path and latency of packets
d) To diagnose hardware failures
Answer: c) To identify the path and latency of packets
Explanation: Traceroute is a network diagnostic tool used to determine the path and measure the latency of packets as they travel from a source to a destination. It displays a list of intermediate routers or hops along with the time taken for the packets to reach each hop, helping identify network congestion or connectivity issues.
Question 8: What is a computer network?
a) A group of interconnected computers and devices.
b) A single computer used for networking purposes.
c) A type of software used for data transmission.
d) None of the above.
Answer: a) A group of interconnected computers and devices.
Explanation: A computer network is a collection of interconnected computers and devices that are linked together to facilitate communication, resource sharing, and data transfer among them.
Question 9: Which of the following is an example of a local area network (LAN)?
a) The internet.
b) A home network.
c) A wide area network (WAN).
d) None of the above.
Answer: b) A home network.
Explanation: A local area network (LAN) refers to a network that connects devices within a limited geographical area, such as a home, office, or school. It enables devices to communicate and share resources within the defined network area.
Question 10: What is the purpose of a router in a network?
a) To connect multiple networks together.
b) To provide wireless access to devices.
c) To store and manage data.
d) None of the above.
Answer: a) To connect multiple networks together.
Explanation: A router is a networking device that connects multiple networks together, directing data packets between them. It determines the optimal path for data transmission and ensures efficient communication between different networks.
Question 11: Which protocol is commonly used for sending emails over the internet?
a) HTTP
b) FTP
c) SMTP
d) DNS
Answer: c) SMTP
Explanation: The Simple Mail Transfer Protocol (SMTP) is the standard protocol used for sending and receiving emails over the Internet. It handles the transmission of email messages between mail servers.
Question 12: Which protocol is responsible for resolving domain names to IP addresses?
a) FTP
b) DHCP
c) DNS
d) SNMP
Answer: c) DNS
Explanation: The Domain Name System (DNS) is responsible for translating domain names (e.g., www.example.com) into their corresponding IP addresses. It acts as a directory service that resolves human-readable domain names to machine-readable IP addresses.
Question 13: What is a firewall?
a) A hardware device used for internet connectivity.
b) A software application for scanning viruses.
c) A security measure to protect networks from unauthorized access.
d) None of the above.
Answer: c) A security measure to protect networks from unauthorized access.
Explanation: A firewall is a security measure that acts as a barrier between a private internal network and external networks, such as the Internet. It monitors and controls incoming and outgoing network traffic, allowing authorized data packets and blocking potential threats.
Question 14: What is the purpose of encryption in network security?
a) To speed up data transmission.
b) To authenticate users.
c) To protect sensitive information from unauthorized access.
d) None of the above.
Answer: c) To protect sensitive information from unauthorized access.
Explanation: Encryption is the process of encoding data to make it unreadable to unauthorized users. It plays a crucial role in network security by protecting sensitive information from being intercepted and accessed by unauthorized individuals.
Question 15: What is the purpose of an IP address?
a) To identify a device on a network
b) To establish a wireless connection
c) To encrypt data packets
d) To manage network switches
Answer: a) To identify a device on a network.
Explanation: An IP (Internet Protocol) address is a numerical label assigned to each device connected to a network. It serves as an identifier, allowing devices to send and receive data packets across the internet or local area network. IP addresses are essential for communication between devices, enabling seamless data transmission and routing.
Question 16: What is the function of a router in a computer network?
a) To connect devices within a local area network (LAN)
b) To amplify the Wi-Fi signal
c) To provide power to network devices
d) To store data
Answer: a) To connect devices within a local area network (LAN).
Explanation: A router is a networking device that acts as a gateway between different networks, facilitating the transfer of data packets between them. It connects devices within a LAN, determines the most efficient path for data transmission, and forwards packets accordingly. Routers play a vital role in directing network traffic, ensuring efficient communication between devices.
Question 17: What is the purpose of DNS (Domain Name System)?
a) To secure network connections
b) To translate domain names into IP addresses
c) To control network access
d) To manage network protocols
Answer: b) To translate domain names into IP addresses.
Explanation: DNS is a system that translates human-readable domain names (e.g., www.example.com) into their corresponding IP addresses (e.g., 192.0.2.1). It acts as a directory that helps computers and other devices locate websites and services on the internet. DNS plays a crucial role in ensuring seamless navigation and accessibility of web resources.
Question 18: What is the purpose of a firewall in network security?
a) To encrypt network traffic
b) To filter and monitor network traffic
c) To allocate IP addresses
d) To establish VPN connections
Answer: b) To filter and monitor network traffic.
Explanation: A firewall is a network security device that monitors and filters incoming and outgoing network traffic based on predefined security rules. It acts as a barrier between a trusted internal network and an untrusted external network (such as the Internet), preventing unauthorized access and protecting against malicious activities. Firewalls play a vital role in safeguarding network infrastructure and ensuring data security.
Question 19: What is the purpose of the OSI (Open Systems Interconnection) model?
a) To establish a standardized framework for network communication
b) To define the physical components of a network
c) To facilitate wireless communication
d) To regulate internet traffic
Answer: a) To establish a standardized framework for network communication
Explanation: The OSI model is a conceptual framework that standardizes network communication protocols into seven layers. Each layer has a specific function, such as physical transmission, data formatting, or network routing. By providing a common language and structure, the OSI model ensures compatibility and interoperability between different networking systems.
Question 20: Which protocol is responsible for IP address assignment in a network?
a) DHCP (Dynamic Host Configuration Protocol)
b) DNS (Domain Name System)
c) TCP (Transmission Control Protocol)
d) HTTP (Hypertext Transfer Protocol)
Answer: a) DHCP (Dynamic Host Configuration Protocol)
Explanation: DHCP is the protocol used to dynamically assign IP addresses to devices within a network. It enables devices to obtain IP configurations automatically, including IP addresses, subnet masks, default gateway, and DNS server addresses. By using DHCP, network administrators can efficiently manage IP address allocation and streamline network configuration processes.
Conclusion
Congratulations on completing the computer networking multiple-choice questions! We hope this comprehensive set of questions has deepened your understanding of computer networking concepts, protocols, security, and troubleshooting. By mastering these fundamentals, you are well-equipped to navigate the complex world of computer networks and contribute to building secure and efficient network infrastructures.
Remember, continuous learning and practical implementation of networking concepts will further strengthen your expertise in this field. Stay curious, explore new technologies, and embrace the ever-evolving world of computer networking!
At [COMPUTER MCQs], we are committed to providing valuable resources and guidance to help you excel in computer networking. With dedication and continuous learning, you can build a strong foundation in this dynamic field and unlock exciting opportunities.
Please note that these questions cover some Computer Networking concepts in computer science. I hope the explanations help clarify the concepts for you. If you have any specific topics or areas you’d like to explore further, feel free to ask!