Computer networking MCQ – Change your future

581. Which network covers a large geographical area?

Correct Answer: Correct answer is: (B) WAN.

Exam Relevance: CCNA, CompTIA Network+, ITIL Foundation

Difficulty: Easy

Concept notes: WAN stands for Wide Area Network, which covers a large geographical area, such as cities, countries, or even globally.

Common Mistakes: Students may confuse LAN (Local Area Network) with WAN, as both are types of networks but differ in the geographical area they cover.

Explanations: WANs are designed to connect devices over large geographical distances, such as between different cities or countries. This makes WANs suitable for connecting branch offices of a company or providing internet access across a wide area. In contrast, LANs are limited to a smaller area, such as a single building or campus.

Option Analysis:

Option A: LAN stands for Local Area Network, which covers a small geographical area, such as a single building or campus.
Option B: WAN stands for Wide Area Network, which covers a large geographical area, such as cities, countries, or even globally.

Mnemonic: WAN - Wide Across Nations

582. At network layer protocol defined by TCP/IP is

Correct Answer: Correct answer is: (C) IP.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: The Internet Protocol (IP) is a network layer protocol defined by the TCP/IP model. It is responsible for addressing and routing packets across networks.

Common Mistakes: Students often confuse TCP and IP, thinking TCP is a network layer protocol. TCP is actually a transport layer protocol.

Explanations: The Internet Protocol (IP) operates at the network layer of the TCP/IP model. It is responsible for addressing and routing packets from the source to the destination. TCP and UDP, on the other hand, operate at the transport layer, which is above the network layer.

Option Analysis:

Option A: TCP is a transport layer protocol, not a network layer protocol.
Option B: UDP is also a transport layer protocol, not a network layer protocol.
Option C: IP is the correct network layer protocol defined by TCP/IP.
Option D: This option is incorrect as IP is the correct answer.

Mnemonic: IP for Internet Protocol, think "Internet Packets"

583. The network size which connects two or more personal devices is called a .....

Correct Answer: Correct answer is: (A) PAN.

Exam Relevance: IT Essentials, CompTIA A+, Network+ Certification

Difficulty: Easy

Concept notes: A Personal Area Network (PAN) is a network that connects personal devices within a small area, typically within a range of a few meters.

Common Mistakes: Students may confuse PAN with LAN (Local Area Network), which connects devices within a larger area such as a home or office.

Explanations: A Personal Area Network (PAN) is designed to connect personal devices such as smartphones, laptops, and tablets within a small area, typically within a few meters. This makes it the correct answer for a network that connects two or more personal devices.

Option Analysis:

Option A: Correct. PAN connects personal devices within a small area.
Option B: Incorrect. LAN connects devices within a larger area such as a home or office.
Option C: Incorrect. MAN connects devices within a metropolitan area, which is much larger than a personal area.
Option D: Incorrect. WAN connects devices over a wide geographic area, such as different cities or countries.

Mnemonic: PAN: Personal Area Network, Personal Devices Nearby

584. In this type of topology, there is the main cable and all the devices are connected to this main cable through drop lines.

Correct Answer: Correct answer is: (B) Bus Network.

Exam Relevance: CCNA, CompTIA Network+, A+ Certification

Difficulty: Easy

Concept notes: In a bus network topology, all devices are connected to a single main cable, known as the bus or backbone. This main cable serves as the communication medium for all devices.

Common Mistakes: Students may confuse the bus network with a ring network, where devices are connected in a circular loop.

Explanations: The correct answer is Bus Network because in this topology, all devices are connected to a single main cable, which is the defining characteristic of a bus network. This main cable acts as the communication medium, and each device is connected to it via drop lines.

Option Analysis:

Option A: A ring network has devices connected in a circular loop, not to a main cable.
Option B: A bus network has all devices connected to a single main cable, which matches the description given.
Option C: A star network has all devices connected to a central hub, not a main cable.
Option D: This option is incorrect as the description clearly fits a bus network.

Mnemonic: Bus: Big Unified System

585. What is Neighborhood Area Network(NAN)?

Correct Answer: Correct answer is: (B) A public high-speed network that can transmit voice and data within a limited geographical area.

Exam Relevance: CCNA, Network+ Certification, CompTIA Network+

Difficulty: Moderate

Concept notes: Neighborhood Area Network (NAN) is a type of network that provides high-speed data and voice transmission within a limited geographical area, such as a neighborhood or small community.

Common Mistakes: Students may confuse NAN with other types of networks, such as Personal Area Networks (PAN) or Local Area Networks (LAN), which operate on different scales and purposes.

Explanations: The correct answer is that a Neighborhood Area Network (NAN) is a public high-speed network that can transmit voice and data within a limited geographical area. This definition aligns with the purpose of NANs, which are designed to provide high-speed connectivity to a specific community or neighborhood. The other options describe different types of networks or network components that do not match the definition of a NAN.

Option Analysis:

Option A: This describes a Personal Area Network (PAN), which operates on a much smaller scale and is not a public network.
Option B: This accurately describes a Neighborhood Area Network (NAN), which is a public network designed for high-speed data and voice transmission within a limited geographical area.
Option C: This describes a function of a server or network device, not a type of network.
Option D: This describes network topology, not a type of network.

Mnemonic: NAN: Neighborhood Area Network, Not a Personal Area Network

586. I have an internal processor and know the address of each device on the network. What am I?

Correct Answer: Correct answer is: (C) Switch.

Exam Relevance: CCNA, Network+, CompTIA A+

Difficulty: Moderate

Concept notes: A switch is a network device that forwards data to specific devices on a network based on their MAC addresses. It maintains a table of device addresses and uses this information to efficiently direct traffic to the correct destination.

Common Mistakes: Students may confuse a switch with a router, as both are used to connect devices in a network. However, a switch operates at the data link layer (Layer 2) and uses MAC addresses, while a router operates at the network layer (Layer 3) and uses IP addresses.

Explanations: A switch is the correct answer because it maintains a table of device addresses and uses this information to efficiently direct traffic to the correct destination. The internal processor and knowledge of each device's address on the network align with the functionality of a switch, which operates at the data link layer and uses MAC addresses to forward data.

Option Analysis:

Option A: A modem is used to connect to the internet and does not maintain a table of device addresses on the network.
Option B: A router operates at the network layer and uses IP addresses to route data, not MAC addresses.
Option C: A switch operates at the data link layer and uses MAC addresses to forward data to specific devices on the network.
Option D: Ethernet is a type of network technology and not a device that maintains a table of device addresses.

Mnemonic: MAC Switch, IP Router

587. I network that covers a small geographic area and has one set of administrators.

Correct Answer: Correct answer is: (A) LAN.

Exam Relevance: CCNA, CompTIA Network+, CIW Network Specialist

Difficulty: Easy

Concept notes: A LAN (Local Area Network) is a network that covers a small geographic area and is typically managed by a single organization.

Common Mistakes: Students may confuse LAN with WAN, which covers a larger geographic area.

Explanations: A LAN (Local Area Network) is designed to cover a small geographic area, such as a single building or a group of buildings. It is usually managed by a single organization, making it the correct choice for a network that fits the given description.

Option Analysis:

Option A: Correct. LAN covers a small geographic area and is managed by a single organization.
Option B: Incorrect. WAN (Wide Area Network) covers a large geographic area, often spanning cities or countries.
Option C: Incorrect. PAN (Personal Area Network) is designed for a very small area, typically within a few meters, around a person.
Option D: Incorrect. WLAN (Wireless Local Area Network) is a type of LAN that uses wireless technology, but the term LAN is more general and encompasses both wired and wireless networks.

Mnemonic: LAN: Local Area Network, Local and Limited

588. A WAN covers a wider area than a LAN. True or False?

Correct Answer: Correct answer is: (A) True.

Exam Relevance: CCNA, CompTIA Network+, ITIL Foundation

Difficulty: Very Easy

Concept notes: A WAN (Wide Area Network) covers a larger geographical area than a LAN (Local Area Network).

Common Mistakes: Students might confuse the coverage areas of WAN and LAN, thinking that LAN covers a wider area.

Explanations: A WAN is designed to connect devices over a large geographical area, such as different cities or countries. In contrast, a LAN is typically used to connect devices within a small area, such as a home, office, or school. Therefore, the statement that a WAN covers a wider area than a LAN is true.

Option Analysis:

Option A: Correct, as WANs cover larger geographical areas compared to LANs.
Option B: Incorrect, as WANs do indeed cover a wider area than LANs.

Mnemonic: WANs Wide, LANs Local

589. What is the main benefit of a computer network?

Correct Answer: Correct answer is: (B) To share resources e.g hardware, software and an internet connection.

Exam Relevance: AP Computer Science Principles, A+ Certification, CompTIA Network+

Difficulty: Easy

Concept notes: A computer network allows multiple devices to connect and share resources, enhancing efficiency and collaboration.

Common Mistakes: Students may confuse the benefits of a network with energy conservation or entertainment purposes.

Explanations: The main benefit of a computer network is the ability to share resources such as hardware, software, and internet connections. This sharing allows for more efficient use of resources and enhances collaboration among users.

Option Analysis:

Option A: Saving electricity is not a primary benefit of a computer network.
Option B: Sharing resources is the primary benefit of a computer network.
Option C: Making devices more fun to use is not a primary benefit of a computer network.

Mnemonic: SHARE: Share Hardware, Applications, Resources, Enhance collaboration.

590. The Internet is

Correct Answer: Correct answer is: (C) A network of networks.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: The Internet is a global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.

Common Mistakes: Students may confuse the Internet with the World Wide Web (WWW), which is a subset of the Internet.

Explanations: The Internet is fundamentally a network of networks, connecting various devices and networks around the world. It is not synonymous with the WWW, which is a collection of documents and resources accessible via the Internet using HTTP. The Internet was not invented by Sir Tim Berners-Lee, who is credited with inventing the World Wide Web. The Internet itself is not written in HTML and XML, which are markup languages used for web pages.

Option Analysis:

Option A: The Internet is not another name for the WWW. The WWW is a service that operates over the Internet.
Option B: Sir Tim Berners-Lee invented the World Wide Web, not the Internet.
Option C: The Internet is a network of networks, connecting various devices and networks globally.
Option D: The Internet is not written in HTML and XML; these are languages used for web pages.

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Computer networking MCQ - Set 59

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