Computer networking MCQ – Change your future

151. Higher-speed broadband connection .

Correct Answer: Correct answer is: (C) Fiber-optic.

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

Difficulty: Moderate

Concept notes: Fiber-optic technology provides the highest-speed broadband connection due to its use of light to transmit data over long distances with minimal loss.

Common Mistakes: Students may confuse DSL with fiber-optic, as both are broadband technologies, but DSL is significantly slower.

Explanations: Fiber-optic technology uses light to transmit data, which allows for much higher speeds compared to other broadband technologies like DSL or satellite. The light signals travel through glass or plastic fibers with very low signal loss, enabling faster data transmission rates.

Option Analysis:

Option A: Dial-up is a slow connection method that uses telephone lines and is not considered broadband.
Option B: DSL (Digital Subscriber Line) is a broadband technology but is slower than fiber-optic due to its reliance on copper telephone lines.
Option C: Fiber-optic is the correct answer as it provides the highest-speed broadband connection.
Option D: Satellite internet is a broadband technology but is generally slower and less reliable than fiber-optic due to signal latency and weather interference.

Mnemonic: Fiber = Fastest

152. To prevent interference of adjacent cell signals, size of cell is

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

Exam Relevance: GATE, GRE, ECE Competitive Exams

Difficulty: Moderate

Concept notes: Optimizing the size of a cell in a cellular network helps to prevent interference from adjacent cells by balancing coverage and capacity.

Common Mistakes: Students may mistakenly believe that simply increasing or expanding the cell size is the best solution to prevent interference.

Explanations: Optimizing the size of a cell involves carefully adjusting the cell's coverage area to ensure that it provides adequate service without overlapping too much with adjacent cells. This balance helps to minimize interference and maximize the efficiency of the network. Increasing or expanding the cell size without optimization can lead to increased interference and reduced network performance.

Option Analysis:

Option A: Increasing the size of a cell can lead to more interference from adjacent cells, which is counterproductive.
Option B: Expanding the cell size without optimization can also result in increased interference and reduced network efficiency.
Option C: Optimizing the cell size ensures that the cell provides adequate coverage while minimizing interference from adjacent cells.
Option D: Keeping the cell size constant does not address the issue of interference and may not be the most efficient solution.

Mnemonic: Optimize for balance, not size.

153. The..... between two words is the number of differences between corresponding bits.

Correct Answer: Correct answer is: (B) Hamming distance.

Exam Relevance: GRE, GATE, CSIR-NET

Difficulty: Easy

Concept notes: The Hamming distance is a measure used in information theory to quantify the difference between two strings of equal length. It is defined as the number of positions at which the corresponding symbols are different.

Common Mistakes: Students may confuse Hamming distance with Hamming code, which is a method for error detection and correction, not a measure of difference.

Explanations: The Hamming distance is the number of differences between corresponding bits in two words. This concept is used to measure the dissimilarity between two strings of equal length, which is why the correct answer is Hamming distance.

Option Analysis:

Option A: Hamming code is a method for error detection and correction, not a measure of difference between two strings.
Option B: Hamming distance is the correct term for the number of differences between corresponding bits in two words.
Option C: There is no such term as Hamming rule in the context of information theory.
Option D: Since Hamming distance is the correct term, this option is incorrect.

154. Which of the following isn't a type of transmission mode?

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

Exam Relevance: Networking exams, Computer Science exams

Difficulty: Easy

Concept notes: Transmission modes refer to the direction of data flow in a communication channel. The options provided include types of transmission modes except for "Physical," which is not a transmission mode.

Common Mistakes: Students may confuse "Physical" with a transmission mode because it is a term often used in networking contexts, but it does not describe the direction of data flow.

Explanations: Transmission modes describe the direction of data flow in a communication channel. Simplex, half-duplex, and full-duplex are valid transmission modes. Simplex allows data to flow in one direction only, half-duplex allows data to flow in both directions but not simultaneously, and full-duplex allows data to flow in both directions simultaneously. "Physical" is not a transmission mode but rather refers to the physical layer of the OSI model, which deals with the physical means of transmission.

Option Analysis:

Option A: Physical is not a transmission mode but refers to the physical layer of the OSI model.
Option B: Simplex is a transmission mode where data flows in one direction only.
Option C: Full duplex is a transmission mode where data can flow in both directions simultaneously.
Option D: Half duplex is a transmission mode where data can flow in both directions but not at the same time.

155. Network media carries .....

Correct Answer: Correct answer is: (A) Communication across a network.

Exam Relevance: CCNA, Network+, CIW

Difficulty: Easy

Concept notes: Network media refers to the physical or wireless means by which data is transmitted between devices in a network.

Common Mistakes: Students may mistakenly believe network media is limited to specific types of information, such as websites or emails, rather than understanding it encompasses all forms of communication.

Explanations: Network media is designed to carry all types of communication across a network, including data, voice, and video. It is not limited to specific types of information like websites or emails, nor is it restricted to cables alone. Therefore, the correct answer is that network media carries communication across a network.

Option Analysis:

Option A: Correct. Network media carries all forms of communication across a network.
Option B: Incorrect. Network media is not limited to websites information only.
Option C: Incorrect. Network media is not limited to email information only.
Option D: Incorrect. Network media is not limited to information across cables only; it can also include wireless transmission.

156. To see web pages on the World Wide Web you need special software called a .....

Correct Answer: Correct answer is: (B) Web browser.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: A web browser is a software application used to access and view web pages on the World Wide Web.

Common Mistakes: Students may confuse a web browser with other internet-related terms like URL or web space.

Explanations: A web browser is the correct answer because it is the software that allows users to access and display web pages from the internet. It interprets HTML and other web technologies to render web content on a user's device.

Option Analysis:

Option A: A web worm is not a software used to view web pages; it is a type of malicious software.
Option B: A web browser is the correct software used to view web pages on the World Wide Web.
Option C: A URL (Uniform Resource Locator) is the address of a web page, not the software used to view it.
Option D: Web space refers to the storage space provided by a web hosting service, not the software used to view web pages.

157. MOSPF is a..... protocol.

Correct Answer: Correct answer is: (A) Data-driven.

Exam Relevance: CCNA, CCNP, Network+

Difficulty: Moderate

Concept notes: MOSPF (Multicast Open Shortest Path First) is a protocol used for multicast routing in IP networks. It is data-driven because it operates based on the data packets it receives, rather than commands or pre-defined instructions.

Common Mistakes: Students may confuse MOSPF with other routing protocols that are command-driven, such as OSPF (Open Shortest Path First), which is not specifically designed for multicast routing.

Explanations: MOSPF is classified as data-driven because it relies on the data packets it receives to make routing decisions. It uses the information contained within the multicast data packets to determine the best path for forwarding the data. This contrasts with command-driven protocols, which operate based on explicit commands or configurations.

Option Analysis:

Option A: Correct. MOSPF is data-driven as it makes routing decisions based on the data packets it receives.
Option B: Incorrect. MOSPF is not command-driven; it does not rely on explicit commands or configurations to make routing decisions.
Option C: Incorrect. MOSPF is not both data-driven and command-driven; it is specifically data-driven.
Option D: Incorrect. MOSPF is data-driven, so this option is not correct.

Mnemonic: Data-Driven MOSPF

158. Which of the following is a commonly used protocol suit?

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

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: TCP/IP stands for Transmission Control Protocol/Internet Protocol, which is a suite of communication protocols used to interconnect network devices on the internet.

Common Mistakes: Students may confuse TCP/IP with other acronyms like TTP/IP or TCT/OP, which are not standard protocols.

Explanations: TCP/IP is the standard protocol suite used for communication over the internet. It includes protocols for data transmission, error detection, and network addressing. The other options (TCT/OP, TTP/IP, TCP/OP) are not recognized protocol suites.

Option Analysis:

Option A: TCT/OP is not a recognized protocol suite.
Option B: TTP/IP is not a recognized protocol suite.
Option C: TCP/IP is the correct protocol suite used for internet communication.
Option D: TCP/OP is not a recognized protocol suite.

159. In a..... ATM LAN, an ATM switch connects stations.

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

Exam Relevance: CCNA, CCNP, Network+

Difficulty: Easy

Concept notes: In a pure ATM LAN, an ATM switch connects stations directly without the need for additional network devices.

Common Mistakes: Students may confuse pure ATM LAN with mixed architecture, where traditional LAN technologies are integrated with ATM.

Explanations: A pure ATM LAN is characterized by the use of ATM switches to connect all stations directly. This configuration ensures that all data transmission occurs using ATM protocols, providing consistent performance and quality of service. The term "pure" indicates that no other network technologies are mixed with ATM, making it a dedicated ATM environment.

Option Analysis:

Option A: Correct. A pure ATM LAN uses ATM switches to connect stations directly.
Option B: Incorrect. Legacy refers to older technologies, not a specific ATM configuration.
Option C: Incorrect. Mixed architecture involves integrating ATM with other network technologies, not a pure ATM environment.
Option D: Incorrect. This is not the correct answer as a pure ATM LAN is a valid configuration.

160. RPC works between two processes. These processes must be

Correct Answer: Correct answer is: (C) Both on the same computer and on different computers connected with a network.

Exam Relevance: Computer Science Fundamentals, Network Programming, Distributed Systems

Difficulty: Moderate

Concept notes: Remote Procedure Call (RPC) is a protocol that allows a computer program to cause a procedure (or subroutine) to execute in another address space (commonly on another computer on a shared network) without the programmer explicitly coding the details for this remote interaction.

Common Mistakes: Students often mistakenly believe that RPC can only occur between processes on different computers, overlooking the possibility of inter-process communication on the same machine.

Explanations: RPC is designed to facilitate communication between processes, regardless of whether these processes are on the same computer or on different computers connected via a network. This flexibility allows RPC to be used in a wide range of applications, from local inter-process communication to distributed systems. Therefore, the correct answer is that RPC can work both on the same computer and on different computers connected with a network.

Option Analysis:

Option A: Incorrect because RPC is not limited to processes on the same computer.
Option B: Incorrect because RPC can also work between processes on the same computer.
Option C: Correct because RPC can work both on the same computer and on different computers connected with a network.
Option D: Incorrect because there is a correct option available.

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Computer networking MCQ - Set 16

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