Computer networking MCQ

1601. Q3: Which of these is a characteristic of a WAN? (3-6)

Correct Answer: Correct answer is: (B) Normally has a lower bandwidth than a LAN.

Exam Relevance: CCNA, CompTIA Network+, A+

Difficulty: Easy

Concept notes: Wide Area Networks (WANs) typically cover large geographical areas and often have lower bandwidth compared to Local Area Networks (LANs) due to the longer distances and the use of public infrastructure.

Common Mistakes: Students may confuse WAN characteristics with those of LANs, which are designed for smaller areas and often have higher bandwidth.

Explanations: WANs are designed to connect devices over large geographical areas, often using public infrastructure like the internet. This setup often results in lower bandwidth compared to LANs, which are confined to smaller areas and can use dedicated, high-speed connections.

Option Analysis:

Option A: WANs cover large geographical areas, not small ones.
Option B: WANs typically have lower bandwidth than LANs due to the longer distances and use of public infrastructure.
Option C: WANs are not limited to a single building; they can span cities, countries, or even continents.
Option D: Users on a WAN can share files and peripherals, though this may be limited by the network's design and security policies.

Mnemonic: WANs are Wide, and often Wobbly (lower bandwidth).

1602. Data is moved around the network in .....

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

Exam Relevance: Computer Networks, Data Communications, Network Fundamentals

Difficulty: Easy

Concept notes: Data is transmitted over a network in discrete units called packets.

Common Mistakes: Students may confuse packets with other data transmission methods, such as streams or continuous data flow.

Explanations: Data is moved around the network in packets. Packets are small, manageable units of data that are transmitted independently over a network. Each packet contains a portion of the data along with header information that includes source and destination addresses, sequence numbers, and other control information. This method allows for efficient and reliable data transmission across networks.

Option Analysis:

Option A: Order is not a method of data transmission in networks.
Option B: Envelopes are not used in data transmission; this is a metaphorical term that does not apply to network data transfer.
Option C: Packets are the correct method of data transmission in networks.
Option D: A bus is a hardware component for data transfer within a computer, not a method of data transmission over a network.

Mnemonic: Packets Pack Data

1603. CAT5 and CAT6 are cable standards for which type of cables?

Correct Answer: Correct answer is: (B) Twisted Pair.

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

Difficulty: Easy

Concept notes: CAT5 and CAT6 are standards for twisted pair cables, which are commonly used for Ethernet networking.

Common Mistakes: Students may confuse these standards with other types of cables, such as coaxial or fiber-optic cables.

Explanations: CAT5 and CAT6 are cable standards specifically designed for twisted pair cables. These cables are used in Ethernet networks and are characterized by their twisted pairs of wires, which help reduce crosstalk and electromagnetic interference. The standards define the specifications for the cable's performance, such as data transfer rates and signal quality.

Option Analysis:

Option A: Microwaves are not related to cable standards for data transmission.
Option B: Twisted Pair is the correct answer as CAT5 and CAT6 are standards for twisted pair cables.
Option C: Coaxial cables are a different type of cable and not related to the CAT5 and CAT6 standards.
Option D: Fiber-optic cables use light to transmit data and are not related to the CAT5 and CAT6 standards.

1604. .....changes value smoothly whereas digital data has distinct values.

Correct Answer: Correct answer is: (A) Analog data.

Exam Relevance: AP Computer Science, SAT Subject Tests, IB Computer Science

Difficulty: Easy

Concept notes: Analog data represents information using continuous signals that can vary smoothly over a range of values. In contrast, digital data uses discrete values, typically represented by binary digits (0s and 1s), which do not change smoothly but have distinct, separate values.

Common Mistakes: Students may confuse analog and digital data, thinking that digital data can also change smoothly because it can represent a wide range of values.

Explanations: Analog data changes smoothly because it represents information using continuous signals that can vary over a range of values without any abrupt changes. Digital data, on the other hand, has distinct values because it uses discrete signals, typically binary digits, which can only take on specific, separate values.

Option Analysis:

Option A: Correct. Analog data changes smoothly because it uses continuous signals.
Option B: Incorrect. Digital data has distinct values and does not change smoothly.

Mnemonic: Analog = Always Adapting, Digital = Discrete Digits

1605. The computers in Peter's office building are linked so that staff can share files and printers. This type of network is known as .

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

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

Difficulty: Easy

Concept notes: A LAN (Local Area Network) is a computer network that interconnects computers within a limited area such as a residence, school, or office building.

Common Mistakes: Students may confuse LAN with WAN (Wide Area Network), which covers a larger geographical area.

Explanations: The computers in Peter's office building are linked so that staff can share files and printers. This type of network is known as a LAN (Local Area Network). LANs are designed to connect devices within a small geographical area, such as an office building, allowing for the sharing of resources and communication between devices.

Option Analysis:

Option A: WAN (Wide Area Network) covers a large geographical area, such as cities or countries, which is not applicable to an office building.
Option B: GAN (Global Area Network) is not a standard term in networking and is not applicable here.
Option C: PAN (Personal Area Network) is used for connecting devices in a very small area, such as within a person's workspace, which is too limited for an office building.
Option D: LAN (Local Area Network) is the correct term for a network that connects devices within a limited area, such as an office building.

Mnemonic: LAN: Local Area Network, Limited Area Network

1606. The term 'bandwidth' refers to .

Correct Answer: Correct answer is: (B) The maximum amount of data that can be transferred at any time via an Internet connection.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Bandwidth refers to the maximum rate of data transfer across a given path.

Common Mistakes: Students may confuse bandwidth with the total amount of data that can be downloaded, which is not correct.

Explanations: Bandwidth is defined as the maximum amount of data that can be transferred at any given time over an Internet connection. It is a measure of the capacity of a communication channel, indicating how much data can be transmitted in a given period. This is why option B is the correct answer.

Option Analysis:

Option A: This option is incorrect because bandwidth does not refer to the amount of data downloaded via radio waves. It is a measure of data transfer rate, not the total amount of data.
Option B: This option correctly defines bandwidth as the maximum amount of data that can be transferred at any time via an Internet connection.
Option C: This option is incorrect because bandwidth is not related to the number of minutes used while online. It is a measure of data transfer rate.
Option D: This option is incorrect because bandwidth is not a method of connecting to the Internet. It is a measure of the capacity of the connection.

1607. A collection of resources accessed via the Internet.

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

Exam Relevance: CISSP, CompTIA Network+, CCNA

Difficulty: Easy

Concept notes: The World Wide Web (WWW) is a collection of resources, such as web pages, images, and videos, that are accessible via the Internet.

Common Mistakes: Students may confuse the WWW with the Internet itself, but the WWW is a subset of the Internet, specifically referring to the resources and protocols used to access them.

Explanations: The World Wide Web (WWW) is a system of interlinked hypertext documents accessed via the Internet. It provides a way to access and share a vast collection of resources, including web pages, multimedia content, and other digital information. The WWW is accessed using web browsers and relies on protocols such as HTTP and HTML. Therefore, the WWW is the correct answer as it directly refers to a collection of resources accessible via the Internet.

Option Analysis:

Option A: DNS (Domain Name System) is a service that translates domain names into IP addresses, not a collection of resources.
Option B: WWW (World Wide Web) is a collection of resources accessible via the Internet, making it the correct answer.
Option C: SAN (Storage Area Network) is a high-speed network of storage devices, not a collection of Internet resources.
Option D: URL (Uniform Resource Locator) is a reference to a resource on the Internet, not a collection of resources.

Mnemonic: WWW: Web of Worldly Wisdom

1608. Which one is a collection of point-point links that may form a circle

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

Exam Relevance: Computer Networks, Data Communications, Network Fundamentals

Difficulty: Easy

Concept notes: A ring network is a type of network topology where devices are connected in a circular or closed loop configuration.

Common Mistakes: Students may confuse a ring network with a bus network, which is a linear topology where all devices are connected to a single backbone.

Explanations: A ring network is characterized by a circular configuration where each device is connected to two other devices, forming a closed loop. This topology ensures that data travels in one direction around the ring, making it a collection of point-to-point links that form a circle.

Option Analysis:

Option A: A star network has a central hub to which all devices are connected, not forming a circle.
Option B: A ring network is a collection of point-to-point links that form a closed loop or circle.
Option C: A bus network has all devices connected to a single backbone, not forming a circle.
Option D: A hybrid network combines different topologies but does not specifically form a circle.

Mnemonic: Ring = Round and Round

1609. What is a backup?

Correct Answer: Correct answer is: (B) A second copy of a file stored in a different location.

Exam Relevance: IT Essentials, CompTIA A+, AP Computer Science Principles

Difficulty: Easy

Concept notes: A backup is a copy of data that is stored separately from the original to protect against data loss.

Common Mistakes: Students may confuse a backup with the most recent version of a file, which is not necessarily a backup.

Explanations: A backup is a second copy of a file stored in a different location to ensure data is recoverable in case the original is lost or damaged. This definition aligns with the correct answer, as it emphasizes the importance of having a duplicate copy in a separate location.

Option Analysis:

Option A: This is incorrect because the most recent version of a file is not a backup; it is simply the latest update to the file.
Option B: This is correct because a backup involves creating a second copy of a file and storing it in a different location for safety.
Option C: This describes a failover server, not a backup of a file.
Option D: This is unrelated to the concept of a backup and is a distractor.

1610. A client-server network allows people to save their data centrally.

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

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

Difficulty: Easy

Concept notes: A client-server network architecture allows multiple clients to connect to a central server where data can be stored and managed.

Common Mistakes: Students might think that data can only be stored on individual client machines, not realizing the centralization capability of a server.

Explanations: In a client-server network, the server acts as a central hub for data storage and management. Clients can access and save data to this central server, ensuring that data is stored in a centralized location. This centralization simplifies data management and ensures consistency across all connected clients.

Option Analysis:

Option A: This option is correct because a client-server network does allow for centralized data storage.
Option B: This option is incorrect because it contradicts the fundamental design of a client-server network, which supports centralized data storage.

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Computer networking MCQ - Set 161

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