Computer networking MCQ – Change your future

511. Which of the following statements about RFID is not true?

Correct Answer: Correct answer is: (B) RFIDs require line-of-sight contact to be read.

Exam Relevance: GRE, GMAT, IT Certification Exams

Difficulty: Easy

Concept notes: RFIDs do not require line-of-sight contact to be read, as they use radio waves to transmit data.

Common Mistakes: Students may mistakenly believe that RFIDs require line-of-sight contact, similar to barcodes or QR codes.

Explanations: RFIDs use radio waves to transmit data, which means they do not need to be in the direct line of sight of the reader. The microchips embedded in RFIDs can transmit data over a short range without requiring visual contact.

Option Analysis:

Option A: This is true. RFIDs use an antenna to transmit data.
Option B: This is false. RFIDs do not require line-of-sight contact to be read.
Option C: This is true. Microchips embedded in RFIDs are used to store data.
Option D: This is true. RFIDs typically transmit data over a short range.

512. A gaming vlogger has over 1 million subscribers. They record footage of themselves playing the most popular online multiplayer games and then upload their footage in high definition. What would be the best type of network to use in this situation?

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

Exam Relevance: Networking Fundamentals, IT Certification Exams, Computer Science Exams

Difficulty: Moderate

Concept notes: Wired networks provide a more stable and reliable connection compared to wireless networks, which is crucial for high-definition video uploads and gaming.

Common Mistakes: Students might mistakenly choose wireless because it offers more mobility, but the stability and speed required for high-definition video uploads are better provided by wired connections.

Explanations: Wired networks offer a more stable and consistent connection, which is essential for high-definition video uploads. Gaming vloggers require a reliable network to ensure smooth streaming and high-quality video uploads. Wired connections minimize the risk of signal interference and provide higher bandwidth, making them the best choice for this scenario.

Option Analysis:

Option A: Wired networks are more stable and provide higher bandwidth, which is necessary for high-definition video uploads and gaming.
Option B: Wireless networks can be less reliable and may suffer from signal interference, which can affect the quality of video uploads and gaming performance.

Mnemonic: Wired = Reliable, Wireless = Risky

513. What type of topology has all devices connected individually?

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

Exam Relevance: CCNA, Network+ Certification, High School Computer Science Exams

Difficulty: Easy

Concept notes: In a mesh topology, each device is connected individually to every other device in the network.

Common Mistakes: Students may confuse mesh topology with star topology, where devices are connected to a central hub rather than directly to each other.

Explanations: In a mesh topology, each device is directly connected to every other device, ensuring that there are multiple paths between any two devices. This direct individual connection is the defining characteristic of a mesh topology.

Option Analysis:

Option A: Mesh topology is correct because it describes a network where each device is individually connected to every other device.
Option B: Ring topology connects devices in a circular loop, not individually.
Option C: Bus topology connects all devices to a single backbone cable, not individually.
Option D: Star topology connects all devices to a central hub, not individually.

Mnemonic: Mnemonic: Mesh = Many individual connections.

514. What class is the following IP address? 220.10.10.35

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

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Moderate

Concept notes: IP addresses are categorized into classes based on their first octet. Class C addresses range from 192.0.0.0 to 223.255.255.255.

Common Mistakes: Students often confuse the ranges of different IP address classes, particularly between Class B and Class C.

Explanations: The IP address 220.10.10.35 falls within the range of Class C addresses, which is from 192.0.0.0 to 223.255.255.255. The first octet, 220, is within this range, confirming that the address is a Class C address.

Option Analysis:

Option A: Incorrect, as the address does not fall within the Class A range (1.0.0.0 to 126.255.255.255).
Option B: Incorrect, as the address does not fall within the Class B range (128.0.0.0 to 191.255.255.255).
Option C: Correct, as the address falls within the Class C range (192.0.0.0 to 223.255.255.255).
Option D: Incorrect, as there is no Class D in the context of IP address classification for this question.

515. The Metropolitan Area Network is larger than WANs and smaller than LANs.

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

Exam Relevance: CCNA, CompTIA Network+, CISSP

Difficulty: Easy

Concept notes: The Metropolitan Area Network (MAN) is a network that spans a larger geographical area than a Local Area Network (LAN) but smaller than a Wide Area Network (WAN).

Common Mistakes: Students often confuse the size and scope of different types of networks, mistaking MANs for being larger than WANs.

Explanations: A Metropolitan Area Network (MAN) is designed to cover a city or a large campus, which is larger than a LAN but smaller than a WAN. A LAN typically covers a small area like a home or office building, while a WAN covers a much larger area, such as a country or even globally. Therefore, the statement that a MAN is larger than a WAN is incorrect.

Option Analysis:

Option A: This option is incorrect because it suggests that a MAN is larger than a WAN, which is not true.
Option B: This option is correct because it accurately states that the given statement is false.

Mnemonic: MAN is Middle, WAN is Wide, LAN is Local.

516. Which one of the following is a transport layer protocol used in internet?

Correct Answer: Correct answer is: (D) Both TCP and UDP.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are both transport layer protocols used in the Internet Protocol suite.

Common Mistakes: Students may mistakenly believe that only TCP is a transport layer protocol, as it is more commonly discussed in networking contexts.

Explanations: TCP and UDP are both transport layer protocols used in the Internet Protocol suite. TCP is connection-oriented and provides reliable, ordered, and error-checked delivery of data. UDP, on the other hand, is connectionless and provides a faster, but less reliable service. Both protocols operate at the transport layer, making option D the correct answer.

Option Analysis:

Option A: TCP is a transport layer protocol, but it is not the only one.
Option B: UDP is also a transport layer protocol, but it is not the only one.
Option C: SMTP is an application layer protocol, not a transport layer protocol.
Option D: Both TCP and UDP are transport layer protocols, making this the correct answer.

Mnemonic: TCP-UDP: Together Provide Data

517. Which one of the following would breach the integrity of a system?

Correct Answer: Correct answer is: (B) Full access rights for all users.

Exam Relevance: CISSP, CompTIA Security+, CISA

Difficulty: Moderate

Concept notes: Explain the core concept clearly.

Common Mistakes: Students may overlook the importance of access control in maintaining system integrity.

Explanations: Full access rights for all users would breach the integrity of a system because it allows any user to modify or delete critical data and system configurations. This lack of access control can lead to unauthorized changes, data corruption, and security vulnerabilities.

Option Analysis:

Option A: Looking the room to prevent theft does not directly affect system integrity.
Option B: Full access rights for all users would breach system integrity by allowing unauthorized modifications.
Option C: Fitting the system with an anti-theft device enhances security but does not breach integrity.
Option D: Protecting the device against willful or accidental damage maintains system integrity.

Mnemonic: Provide a mnemonic ONLY if it naturally fits the concept. The mnemonic should: Be easy to recall and not complicated or confusing. Relate directly to the information you are trying to remember. Be unique, vivid, or memorable so it stands out in memory. Help recall the exact information accurately, without confusion. Be durable and adaptable across contexts if possible. DO NOT create a mnemonic if it feels forced or irrelevant. If no suitable mnemonic exists, return nothing (empty).

518. How are websites and pages easily linked together?

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

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Hyperlinks are the fundamental mechanism that allows websites and pages to be easily linked together.

Common Mistakes: Students may confuse hyperlinks with other web elements like browser cues or common words.

Explanations: Hyperlinks are clickable elements on a webpage that, when clicked, direct the user to another webpage or section of the same page. They are essential for navigating the web and connecting different pieces of content. Common words, browser cues, and trolls do not provide the same functionality for linking web content.

Option Analysis:

Option A: Common words are not a mechanism for linking web pages.
Option B: Browser cues are visual indicators in a browser but do not link pages.
Option C: Hyperlinks are the correct mechanism for linking web pages.
Option D: Trolls are disruptive users and not related to linking web pages.

Mnemonic: Hyperlinks: "Hop to Links"

519. .....is one of the communication methods used by WAN.

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

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

Difficulty: Moderate

Concept notes: Satellite communication is a method used in Wide Area Networks (WAN) to transmit data over long distances.

Common Mistakes: Students may confuse satellite communication with other WAN technologies like fiber optics or microwave links.

Explanations: Satellite communication is a key method used in WANs to transmit data over long distances. Satellites orbit the Earth and can relay data between different points on the planet, making them ideal for connecting geographically dispersed locations. This method is particularly useful in areas where laying cables or establishing other forms of communication infrastructure is impractical or too expensive.

Option Analysis:

Option A: Modems are typically used for connecting to the internet over telephone lines or cable networks, not for WAN communication over long distances.
Option B: Satellites are used in WANs to transmit data over long distances, making them a valid communication method for WANs.

Mnemonic: S-WAN: Satellite for Wide Area Networks

520. Which is the fastest method for communicating data?

Correct Answer: Correct answer is: (B) Fibre Optic Cable.

Exam Relevance: GATE, GRE, GMAT, IT Certification Exams

Difficulty: Moderate

Concept notes: Fibre optic cables transmit data using light, which allows for faster and more efficient data transmission compared to copper cables and wireless methods.

Common Mistakes: Students often confuse the speed of copper cables with fibre optic cables, as copper cables are widely used and well-known.

Explanations: Fibre optic cables use light to transmit data, which travels at the speed of light, making it the fastest method for communicating data. Copper cables, while reliable, are slower due to the resistance and signal degradation over distance. Wireless methods, such as Wi-Fi, are also slower due to the limitations of radio frequency transmission and potential interference.

Option Analysis:

Option A: Copper cables are slower due to electrical resistance and signal degradation over distance.
Option B: Fibre optic cables use light to transmit data, which is faster than electrical signals in copper cables or radio waves in wireless methods.
Option C: Wireless methods are slower due to the limitations of radio frequency transmission and potential interference.

Mnemonic: Light Speed Fiber

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Computer networking MCQ - Set 52

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