Computer networking MCQ – Change your future

441. Which one of the following statements with regard to Bluetooth is FALSE?

Correct Answer: Correct answer is: (C) Devices that are between 5 m and 60 m apart can connect.

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

Difficulty: Moderate

Concept notes: Bluetooth technology is designed for short-range wireless communication, typically within a range of about 10 meters, although some devices can extend this range up to 100 meters under optimal conditions.

Common Mistakes: Students may incorrectly assume that Bluetooth can connect devices over a wider range, such as between 5 m and 60 m, due to the variability in device specifications and marketing claims.

Explanations: Bluetooth technology is primarily designed for short-range wireless communication, typically within a range of about 10 meters. While some devices can extend this range up to 100 meters under optimal conditions, the statement that devices can connect between 5 m and 60 m is not universally accurate. Therefore, the correct answer is that this statement is false.

Option Analysis:

Option A: This is true as Bluetooth can be used to transfer files between cellphones.
Option B: This is true as Bluetooth devices can automatically detect other nearby Bluetooth devices.
Option C: This is false as the typical range for Bluetooth is much shorter than 5 m to 60 m.
Option D: This is true as Bluetooth uses radio technology for communication.

442. TRUE OR FALSE: A RING TOPOLOGY does not need a separate server.

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

Exam Relevance: Network Fundamentals, CCNA, CompTIA Network+

Difficulty: Easy

Concept notes: In a ring topology, devices are connected in a circular configuration, and data travels in one direction around the ring. This topology does not require a central server to manage the network.

Common Mistakes: Students may mistakenly believe that a ring topology requires a server to manage data flow, similar to a star topology.

Explanations: A ring topology is characterized by devices being connected in a closed loop. Data packets travel around the loop in one direction, passing through each device until they reach their destination. Since there is no central point of control, a ring topology does not need a separate server to manage the network.

Option Analysis:

Option A: Correct. A ring topology does not require a separate server.
Option B: Incorrect. A ring topology does not need a server to function.

Mnemonic: Ring No Server

443. The Receiver sends a ..... back to the sender if everything was OK

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

Exam Relevance: Computer Networks, Data Communication, IT Fundamentals

Difficulty: Easy

Concept notes: ACK stands for Acknowledgment, which is a signal sent by a receiver to a sender to indicate successful receipt of data.

Common Mistakes: Students may confuse ACK with NAK (Negative Acknowledgment), which is sent when data is not received correctly.

Explanations: In data communication, when the receiver successfully receives the data, it sends an ACK back to the sender. This confirms that the data was received without errors. The other options, NAK, PAK, and NCK, are not standard terms used in this context.

Option Analysis:

Option A: NAK stands for Negative Acknowledgment, which is sent when the data is not received correctly.
Option B: PAK is not a standard term in data communication.
Option C: ACK stands for Acknowledgment, which is sent when the data is received correctly.
Option D: NCK is not a standard term in data communication.

Mnemonic: ACK: All Clear, Keep going

444. When might you use the Internet without accessing the World Wide Web?

Correct Answer: Correct answer is: (A) When emailing a friend.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: Emailing can be done using the Internet without accessing the World Wide Web.

Common Mistakes: Students might think that all online activities require the World Wide Web.

Explanations: Emailing is a service that can be accessed directly through the Internet without necessarily using the World Wide Web. The World Wide Web is a subset of the Internet that includes websites and web pages, but not all Internet activities involve the Web. Email services operate on the Internet but do not require browsing the Web.

Option Analysis:

Option A: Correct. Emailing can be done using the Internet without accessing the World Wide Web.
Option B: Incorrect. Booking a cinema ticket online typically involves accessing a website, which is part of the World Wide Web.
Option C: Incorrect. Using Facebook involves accessing a website, which is part of the World Wide Web.
Option D: Incorrect. Using Twitter involves accessing a website, which is part of the World Wide Web.

Mnemonic: Email, not Web, for direct Internet.

445. A secured version of HTTP used to transfer web pages from a secure web server to a web client in encrypted information

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

Exam Relevance: AP Computer Science Principles, CompTIA Network+, CISSP

Difficulty: Easy

Concept notes: HTTPS stands for Hypertext Transfer Protocol Secure. It is a protocol used to securely transfer web pages from a web server to a web client using encryption.

Common Mistakes: Students may confuse HTTPS with HTTP, which does not use encryption.

Explanations: HTTPS is the correct answer because it is specifically designed to transfer web pages securely by encrypting the data. This ensures that the information exchanged between the web server and the client is protected from unauthorized access.

Option Analysis:

Option A: Correct. HTTPS is the secured version of HTTP that uses encryption to protect data.
Option B: Incorrect. HTTP does not provide encryption and is not secure.
Option C: Incorrect. PPP (Point-to-Point Protocol) is a data link layer protocol used for establishing a direct connection between two network points.
Option D: Incorrect. PPPoE (Point-to-Point Protocol over Ethernet) is a method for encapsulating PPP frames inside Ethernet frames.

446. I am the main computer in a network I am the .....

Correct Answer: Correct answer is: (A) Host Processor.

Exam Relevance: CISSP, CompTIA Network+, CCNA

Difficulty: Easy

Concept notes: A host processor is the main computer in a network that controls and manages the network resources and operations.

Common Mistakes: Students may confuse the host processor with a terminal, which is a device that connects to the network but does not control it.

Explanations: The host processor is the central computer in a network that manages and controls the network's resources and operations. It is responsible for processing data, managing network traffic, and providing services to other devices in the network. Therefore, the correct answer is the host processor.

Option Analysis:

Option A: Correct. The host processor is the main computer in a network.
Option B: Incorrect. A terminal is a device that connects to the network but does not control it.
Option C: Incorrect. Network media refers to the physical components that transmit data, such as cables or wireless signals.
Option D: Incorrect. Communication software is used to facilitate communication between devices but is not the main computer in a network.

Mnemonic: Hosts Handle Hubs

447. A switch is a device that joins all the devices of a network together.

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

Exam Relevance: CCNA, Network+, CompTIA A+

Difficulty: Easy

Concept notes: A switch is a networking device that connects multiple devices within a local area network (LAN) and forwards data packets to the correct destination based on the MAC addresses. It does not join all devices together in a single broadcast domain like a hub would.

Common Mistakes: Students may confuse a switch with a hub, which does connect all devices in a single broadcast domain.

Explanations: A switch operates at the data link layer of the OSI model and uses MAC addresses to direct traffic to specific devices. It does not broadcast data to all connected devices, but rather sends data only to the intended recipient. This makes the statement false.

Option Analysis:

Option A: This option is incorrect because a switch does not join all devices together in a single broadcast domain.
Option B: This option is correct because a switch selectively forwards data to specific devices based on MAC addresses, not to all devices.

Mnemonic: Switches are smart, hubs are dumb.

448. What is not a type of network hardware?

Correct Answer: Correct answer is: (D) Electric motor.

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

Difficulty: Easy

Concept notes: Network hardware refers to physical devices used to connect, manage, and facilitate communication between computers and other devices in a network.

Common Mistakes: Students may mistakenly think that all electronic devices are network hardware, but only those specifically designed for network communication qualify.

Explanations: An electric motor is not a type of network hardware. Network hardware includes devices like servers, desktop computers, and modems, which are specifically designed to facilitate network communication. An electric motor, on the other hand, is a device that converts electrical energy into mechanical energy and is not used for network communication.

Option Analysis:

Option A: A server is a type of network hardware used to manage and distribute resources in a network.
Option B: A desktop computer can be used as network hardware when connected to a network for communication purposes.
Option C: A modem is a type of network hardware that converts digital signals to analog signals for transmission over telephone lines.
Option D: An electric motor is not a type of network hardware as it is not designed for network communication.

449. Which of the following is a valid IP address?

Correct Answer: Correct answer is: (C) 73.193.52.17.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: An IP address consists of four octets, each ranging from 0 to 255, separated by periods.

Common Mistakes: Students often overlook the range of values each octet can take, which is from 0 to 255.

Explanations: The correct IP address is 73.193.52.17. Each octet in this address is within the valid range of 0 to 255. The other options are invalid because they either have incomplete octets or an octet value exceeding 255.

Option Analysis:

Option A: 100.11.16. is invalid because it has an incomplete octet.
Option B: 73.193.256.17. is invalid because the third octet (256) exceeds the maximum value of 255.
Option C: 73.193.52.17. is valid as all octets are within the range of 0 to 255.
Option D: 73.193.256.17.12. is invalid because it has an extra octet and the third octet (256) exceeds the maximum value of 255.

450. The amount of data, instructions, or information that can travel over a communications channel sometimes called .....

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

Exam Relevance: Networking exams, Computer Science exams, Telecommunications exams

Difficulty: Moderate

Concept notes: Bandwidth refers to the amount of data that can be transmitted over a network or communication channel in a given time period.

Common Mistakes: Students may confuse bandwidth with broadband, which is a type of internet connection that provides high-speed data transmission.

Explanations: Bandwidth is the correct term for the amount of data, instructions, or information that can travel over a communications channel. It measures the capacity of the channel to transmit data, typically expressed in bits per second (bps). The other options do not specifically refer to this capacity.

Option Analysis:

Option A: Analog refers to a continuous signal, not the capacity of a channel.
Option B: Digital refers to a discrete signal, not the capacity of a channel.
Option C: Broadband is a type of internet connection, not a measure of channel capacity.
Option D: Bandwidth correctly refers to the capacity of a channel to transmit data.

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Computer networking MCQ - Set 45

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