Computer networking MCQ – Change your future

501. WLAN stands for

Correct Answer: Correct answer is: (C) Wireless Local Area Network.

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

Difficulty: Easy

Concept notes: WLAN stands for Wireless Local Area Network, which is a type of network that allows devices to connect and communicate wirelessly within a limited area.

Common Mistakes: Students may confuse WLAN with other network types, such as WAN (Wide Area Network) or LAN (Local Area Network), which do not include the wireless aspect.

Explanations: WLAN is the correct term because it specifically refers to a network that uses wireless technology to connect devices within a local area, such as a home, office, or school. The term "Wireless Local Area Network" accurately describes the nature of the network, which is both wireless and limited in scope to a local area.

Option Analysis:

Option A: Incorrect, as "Wide Long Area Network" is not a recognized term in networking.
Option B: Incorrect, as "Wide Local Area Network" is not a recognized term in networking.
Option C: Correct, as "Wireless Local Area Network" accurately describes the network type.
Option D: Incorrect, as "Wide Legal Area Nework" is not a recognized term in networking.

Mnemonic: WLAN: Wireless Local Area Network

502. Transmission media lie below

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

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

Difficulty: Easy

Concept notes: Transmission media are the physical components used to transmit data in a network.

Common Mistakes: Students may confuse transmission media with higher-level protocols or layers.

Explanations: Transmission media, such as cables and wireless signals, are part of the physical layer in the OSI model. This layer is responsible for the physical transmission of data and is the lowest layer in the model.

Option Analysis:

Option A: Correct. Transmission media are part of the physical layer.
Option B: Incorrect. Application layer is the highest layer and deals with user applications.
Option C: Incorrect. Data link layer deals with the physical transmission of data but is above the physical layer.
Option D: Incorrect. Network layer deals with routing and is above the physical layer.

503. To connect device to network via cable

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

Exam Relevance: CCNA, CompTIA Network+, A+

Difficulty: Easy

Concept notes: A Network Interface Card (NIC) is a hardware component that allows a device to connect to a network.

Common Mistakes: Students may confuse UTP (Unshielded Twisted Pair) with NIC, as UTP is a type of cable used in networking but does not connect the device to the network itself.

Explanations: A NIC is the correct answer because it is the hardware component that enables a device to connect to a network. It provides the necessary interface for the device to communicate over the network using the appropriate protocols.

Option Analysis:

Option A: NIC is the correct answer as it is the hardware component that enables a device to connect to a network.
Option B: UTP is a type of cable used in networking but does not connect the device to the network itself.
Option C: FTP is a protocol used for transferring files over a network, not a device for connecting to a network.
Option D: CPU is the central processing unit of a computer and is not responsible for network connectivity.

Mnemonic: NIC - Network Interface Card

504. The data in the ring topology.....(Which one is correct)

Correct Answer: Correct answer is: (B) Travels in one direction using a control signal called a 'token'.

Exam Relevance: CCNA, Network+, CompTIA A+

Difficulty: Moderate

Concept notes: In a ring topology, data transmission occurs in a single direction around the ring, and a token is used to control access to the network.

Common Mistakes: Students may confuse the ring topology with a bus topology, where data can travel in both directions, or with a star topology, which uses a central switch.

Explanations: In a ring topology, data packets travel in one direction around the ring. Each node on the network listens for the token, which is a special control signal. When a node has data to send, it waits for the token to arrive, then seizes the token and transmits its data. After the data is transmitted, the token is released and continues to circulate around the ring. This ensures that only one node can transmit at a time, preventing collisions.

Option Analysis:

Option A: A switch is not used in a ring topology. Switches are typically used in star topologies.
Option B: This is correct. In a ring topology, data travels in one direction and uses a token to control access.
Option C: Terminators are used in bus topologies to prevent signal reflection, not in ring topologies.

Mnemonic: Ring, Token, One Direction

505. ABC University has its campus buildings spread out across the city. Which network is being used?

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

Exam Relevance: Networking Fundamentals, CCNA, CISSP

Difficulty: Moderate

Concept notes: A Wide Area Network (WAN) connects devices over a large geographical area, such as a city or even globally. This is in contrast to a Local Area Network (LAN), which connects devices within a small area, such as a single building or campus.

Common Mistakes: Students may confuse LAN and WAN, thinking that a university campus spread across a city would still be considered a LAN because it is a single institution.

Explanations: ABC University's campus buildings are spread out across the city, which indicates a large geographical area. A Wide Area Network (WAN) is designed to connect devices over such large distances, making it the appropriate network type for this scenario. A Local Area Network (LAN) would be insufficient as it is limited to a smaller area, such as a single building or a small campus.

Option Analysis:

Option A: A LAN is not suitable for connecting devices spread across a city, as it is designed for smaller areas like a single building or a small campus.
Option B: A WAN is the correct choice for connecting devices over a large geographical area, such as a city, which matches the scenario described for ABC University.

Mnemonic: WAN - Wide Across Nations

506. $\Phi$ ..... policies are applied to prevent congestion before it happens .

Correct Answer: Correct answer is: (B) Open loop congestion control policies.

Exam Relevance: Computer Networks, Telecommunications, Network Engineering

Difficulty: Moderate

Concept notes: Open loop congestion control policies are proactive measures designed to prevent congestion before it occurs by predicting and managing network traffic based on predefined rules and models.

Common Mistakes: Students may confuse open loop policies with closed loop policies, which are reactive and adjust based on current network conditions.

Explanations: Open loop congestion control policies are applied to prevent congestion before it happens. These policies are proactive and rely on predefined rules and models to manage network traffic. They do not require real-time feedback to make decisions, unlike closed loop policies which are reactive and adjust based on current network conditions.

Option Analysis:

Option A: Closed loop congestion control policies are reactive and adjust based on current network conditions, not proactive.
Option B: Open loop congestion control policies are proactive and prevent congestion before it happens by using predefined rules and models.
Option C: Implicit Signalling is a method of congestion control that relies on indirect signals, not proactive policies.
Option D: Explicit Signalling involves direct communication of congestion information, not proactive policies.

Mnemonic: Open Loop: Prevent, Predict, Predefined

507. Acceptable use policies

Correct Answer: Correct answer is: (A) Make it clear what you can/cannot do on a network.

Exam Relevance: GCSE Computer Science, A-Level Computing, CompTIA A+

Difficulty: Easy

Concept notes: An acceptable use policy (AUP) is a set of rules that outlines the appropriate and inappropriate uses of a network or system.

Common Mistakes: Students may confuse acceptable use policies with other types of policies, such as data protection policies or access control policies.

Explanations: An acceptable use policy (AUP) is designed to make it clear to users what activities are permitted and which are not on a network. This helps in maintaining the integrity and security of the network by setting clear boundaries for user behavior.

Option Analysis:

Option A: Correct. An acceptable use policy clearly defines the rules for network usage.
Option B: Incorrect. This describes access control, not an acceptable use policy.
Option C: Incorrect. While an AUP may restrict certain activities, it does not make them illegal.
Option D: Incorrect. The Data Protection Act is related to data privacy and security, not acceptable use policies.

Mnemonic: AUP: Always Provide clarity

508. Which of the following is not an advantages of network?

Correct Answer: Correct answer is: (D) Cost of network.

Exam Relevance: SAT, ACT, AP Computer Science Principles

Difficulty: Easy

Concept notes: The cost of a network is not an advantage but rather a potential drawback.

Common Mistakes: Students may confuse the cost of a network with its benefits, such as improved communication and collaboration.

Explanations: Networks offer several advantages including working together, saving work, and communication. However, the cost of setting up and maintaining a network is a disadvantage, not an advantage.

Option Analysis:

Option A: Working together is an advantage of networks as it allows for collaboration and teamwork.
Option B: Saving work is an advantage of networks as it enables efficient sharing and storage of data.
Option C: Communication is an advantage of networks as it facilitates quick and easy exchange of information.
Option D: Cost of network is not an advantage but a potential disadvantage due to the expenses involved in setting up and maintaining the network.

509. It is a device connected to one end of a bus or cable that absorb signals.

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

Exam Relevance: CCNA, Network+, CompTIA A+

Difficulty: Easy

Concept notes: A terminator is a device used in computer networks to absorb signals at the end of a cable or bus to prevent signal reflection.

Common Mistakes: Students may confuse terminators with hubs or other network devices that do not absorb signals.

Explanations: A terminator is specifically designed to absorb signals at the end of a cable or bus to prevent signal reflection, which can cause interference and data corruption. This makes it the correct answer as it directly fulfills the function described in the question.

Option Analysis:

Option A: Correct. A terminator absorbs signals at the end of a cable or bus.
Option B: Incorrect. A trunk is a high-speed connection between switches or routers, not a signal absorber.
Option C: Incorrect. Topology refers to the layout of a network, not a device that absorbs signals.
Option D: Incorrect. A hub is a device that connects multiple devices on a network but does not absorb signals.

510. It is the feature of a computer network that explains that there should not be any failure in the network or if it occurs the recovery from a failure should be fast.

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

Exam Relevance: Computer Networks, Network Security, IT Fundamentals

Difficulty: Moderate

Concept notes: Reliability in computer networks refers to the ability of the network to perform consistently and without failure over a period of time. It also includes the capability to recover quickly from any failures that do occur.

Common Mistakes: Students may confuse reliability with performance, which focuses on speed and efficiency rather than the absence of failures.

Explanations: Reliability is the feature that ensures there should not be any failure in the network, and if a failure does occur, the network should be able to recover quickly. This aligns with the description provided in the question, making reliability the correct answer.

Option Analysis:

Option A: Performance is about the speed and efficiency of the network, not the absence of failures or recovery from them.
Option B: Scalability is the ability of the network to grow and handle increased loads, not related to failure or recovery.
Option C: Security is about protecting the network from unauthorized access and attacks, not about failure or recovery.
Option D: Reliability is the correct answer as it directly addresses the absence of failures and quick recovery from failures.

⬅ Previous SetSet 51Next Set ➡

Computer networking MCQ - Set 51

Leave a Reply