Computer networking MCQ – Change your future

351. Which one of the following is a balanced interface?

Correct Answer: Correct answer is: (D) RS-422.

Exam Relevance: ECE, Computer Engineering, Electrical Engineering

Difficulty: Moderate

Concept notes: RS-422 is a balanced interface standard designed for differential signaling, which means it uses two wires for each signal, one for the positive and one for the negative voltage. This differential signaling helps reduce noise and interference, making it suitable for longer cable runs and higher data rates.

Common Mistakes: Students often confuse RS-422 with RS-232C, which is an unbalanced interface and not designed for differential signaling.

Explanations: RS-422 is a balanced interface because it uses differential signaling, which involves two wires for each signal. This differential signaling reduces noise and interference, making it suitable for longer cable runs and higher data rates. The other options, RS-232C, RS-423C, and RS-449, do not use differential signaling in the same way, making them unbalanced interfaces.

Option Analysis:

Option A: RS-232C is an unbalanced interface and does not use differential signaling.
Option B: RS-423C is an unbalanced interface and does not use differential signaling.
Option C: RS-449 is a standard that includes both balanced and unbalanced interfaces, but it is not specifically a balanced interface like RS-422.
Option D: RS-422 is a balanced interface that uses differential signaling, making it the correct answer.

Mnemonic: D for Differential, D for RS-422

352. Data is broken into small pieces for transmission, the peices are called.....

Correct Answer: Correct answer is: (D) Data packets.

Exam Relevance: AP Computer Science Principles, A+ Certification, CCNA

Difficulty: Easy

Concept notes: Data packets are the fundamental units of data transmission in computer networks.

Common Mistakes: Students may confuse data packets with other data transmission terms like data frames or data segments.

Explanations: Data is broken into small pieces called data packets for efficient transmission over a network. Each packet contains a portion of the original data along with header information that includes source and destination addresses, sequence numbers, and other control information. This allows the data to be transmitted reliably and reassembled at the destination.

Option Analysis:

Option A: Data pixels is incorrect as pixels are used in digital images, not data transmission.
Option B: Data parcels is incorrect as parcels are used in physical mail, not data transmission.
Option C: Data pockets is incorrect as pockets are not a technical term used in data transmission.
Option D: Data packets is the correct term used in data transmission.

Mnemonic: Think "Packets Pack Data."

353. Listening to detect collisions is called

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

Exam Relevance: Computer Science Exams, Engineering Exams, Video Game Development Exams

Difficulty: Easy

Concept notes: Collision detection is the process of determining whether two or more objects in a system are in contact or intersecting with each other.

Common Mistakes: Students may confuse collision detection with the actual collision event itself, rather than the process of identifying the collision.

Explanations: Collision detection refers to the method used to identify when two objects are colliding. It is a critical component in many systems, such as video games and simulations, where it is necessary to determine if objects are intersecting to trigger appropriate responses.

Option Analysis:

Option A: Collision is the event itself, not the process of detecting it.
Option B: Collision knowing is not a standard term used in the context of detecting collisions.
Option C: Collision detection is the correct term for the process of identifying collisions.
Option D: Interaction is a broader term and does not specifically refer to the detection of collisions.

354. The packet of information at the application layer is called

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

Exam Relevance: Networking Fundamentals, CCNA, CISSP

Difficulty: Easy

Concept notes: In the OSI model, the application layer is the highest layer and deals directly with the software applications. The packet of information at this layer is referred to as a message.

Common Mistakes: Students often confuse the terms packet, message, segment, and frame, which are used at different layers of the OSI model.

Explanations: The application layer is where data is prepared for transmission by the application itself. The data unit at this layer is called a message. This is the correct term because it represents the complete information unit that the application layer handles before it is broken down into smaller units at lower layers.

Option Analysis:

Option A: Packet is the term used at the network layer, not the application layer.
Option B: Message is the correct term for the application layer.
Option C: Segment is the term used at the transport layer, not the application layer.
Option D: Frame is the term used at the data link layer, not the application layer.

355. We can say that a packet switch has..... types of components.

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

Exam Relevance: Computer Networks, Data Communications, Network Engineering

Difficulty: Moderate

Concept notes: A packet switch is a device that routes data packets between different network segments. It has four main components: input ports, output ports, a switching fabric, and a control unit.

Common Mistakes: Students may incorrectly think that a packet switch has only two or three components, overlooking the switching fabric or the control unit.

Explanations: A packet switch consists of four types of components: input ports, which receive incoming packets; output ports, which send packets to their destination; a switching fabric, which routes packets from input to output ports; and a control unit, which manages the overall operation of the switch. This configuration ensures efficient and reliable packet transmission.

Option Analysis:

Option A: Incorrect, as a packet switch has more than two components.
Option B: Incorrect, as a packet switch has more than three components.
Option C: Correct, as a packet switch has four main components.
Option D: Incorrect, as the correct number of components is specified.

356. Smartphones and smart watches communicate using

Correct Answer: Correct answer is: (A) Bluetooth technology.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Bluetooth technology is a wireless communication protocol used for exchanging data over short distances.

Common Mistakes: Students may confuse Bluetooth technology with other wireless technologies like Wi-Fi or think that smartphones and smartwatches use a different form of wireless communication.

Explanations: Smartphones and smartwatches use Bluetooth technology to communicate because it is designed for short-range, low-power wireless communication, making it ideal for connecting devices like these.

Option Analysis:

Option A: Correct. Bluetooth technology is the correct answer as it is the wireless protocol used for communication between smartphones and smartwatches.
Option B: Incorrect. Speed technology is not a recognized term in this context.
Option C: Incorrect. Hardware technology refers to the physical components of a device, not the communication protocol.
Option D: Incorrect. Bluetooth technology is a valid and correct answer, so this option is not applicable.

357. The set of rules to connect many computers in one network is a .....

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

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

Difficulty: Easy

Concept notes: A protocol is a set of rules that govern how data is transmitted and received over a network.

Common Mistakes: Students may confuse the term "protocol" with "path" or "rules," which are less specific terms.

Explanations: A protocol is a formal set of rules that defines how computers communicate with each other in a network. It specifies the format, timing, and sequence of messages exchanged between devices. This ensures that all devices in the network can communicate effectively and understand each other's messages.

Option Analysis:

Option A: Correct. A protocol is the correct term for the set of rules that govern network communication.
Option B: Incorrect. "Way" is too vague and does not specifically refer to the rules governing network communication.
Option C: Incorrect. "Path" refers to the route data takes through a network, not the rules governing communication.
Option D: Incorrect. "Rules" is too general and does not capture the specific nature of network communication rules.

358. Generic domains, for specifying an organization type are

Correct Answer: Correct answer is: (D) 14.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Moderate

Concept notes: Generic top-level domains (gTLDs) are used to specify types of organizations or entities. These domains are managed by ICANN and are not restricted to specific countries.

Common Mistakes: Students may confuse generic top-level domains with country code top-level domains (ccTLDs) or may not be aware of the full list of gTLDs.

Explanations: The correct answer is 14 because there are 14 generic top-level domains (gTLDs) that are commonly recognized and used to specify organization types. These include .com, .org, .net, .edu, .gov, .mil, .biz, .info, .name, .pro, .aero, .coop, .museum, and .int. Each of these domains is designed to cater to specific types of organizations or entities, making them generic in nature.

Option Analysis:

Option A: 6 is incorrect as it does not account for the full range of gTLDs.
Option B: 8 is incorrect as it does not account for the full range of gTLDs.
Option C: 10 is incorrect as it does not account for the full range of gTLDs.
Option D: 14 is correct as it accurately reflects the number of generic top-level domains.

Mnemonic: Remember the number 14 by thinking of "14 types of organizational domains."

359. A..... document is a fixed-content document that is created and stored in a server. The client can get a copy of the document only.

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

Exam Relevance: Computer Science Exams, Web Development Exams, Information Technology Exams

Difficulty: Easy

Concept notes: A static document is a fixed-content document that does not change once it is created and stored on a server. Clients can only retrieve a copy of the document as it is, without any modifications or dynamic content generation.

Common Mistakes: Students may confuse static documents with dynamic documents, which can change content based on user interaction or other factors.

Explanations: A static document is a fixed-content document that is created and stored in a server. Once created, the content of the document does not change. Clients can only retrieve a copy of the document as it is, without any modifications or dynamic content generation. This aligns with the definition of a static document.

Option Analysis:

Option A: Correct. Static documents are fixed-content documents that do not change once created and stored on a server.
Option B: Incorrect. Dynamic documents can change content based on user interaction or other factors.
Option C: Incorrect. Active documents typically refer to documents that can be modified or interacted with, which is not the case for the described document.
Option D: Incorrect. The correct answer is provided in the options.

360. Which is the largest type of network?

Correct Answer: Correct answer is: (C) WAN (wide area network).

Exam Relevance: CCNA, CompTIA Network+, ITIL Foundation

Difficulty: Easy

Concept notes: Wide Area Networks (WANs) are the largest type of network, covering a wide geographical area, often spanning cities, countries, or even continents.

Common Mistakes: Students may confuse LANs with WANs, as both are types of networks, but WANs cover a much larger geographical area.

Explanations: WANs are designed to connect devices over large geographical distances, such as different cities or countries. This makes them the largest type of network compared to LANs, MANs, and home networks, which cover smaller areas.

Option Analysis:

Option A: Home Network is a small network typically confined to a single residence or small office.
Option B: LAN (local area network) covers a small geographical area, such as a single building or campus.
Option C: WAN (wide area network) covers a large geographical area, often spanning cities, countries, or continents.
Option D: MAN (metropolitan area network) covers a larger area than a LAN but smaller than a WAN, typically a city or large campus.

Mnemonic: WANs are Wide, like the World.

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Computer networking MCQ - Set 36

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