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Computer Networks Quiz 13 (10 MCQs)

This set of multiple-choice questions evaluates understanding of connection-oriented protocols, data transmission reliability, and network communication types. It covers simplex, half-duplex, and full-duplex communication, packet-switched networks, and network redundancy. The questions also assess knowledge of network architecture, server functions, and shared resources, including intranet and extranet systems.

Quiz Instructions

Select an option to see the correct answer instantly.

1. The physical path by which the message travels from sender to receiver is called .....

Correct Answer: Correct answer is: (B) Transmission Medium.

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

Difficulty: Easy

Concept notes: In computer networks, the physical path by which a message travels from the sender to the receiver is known as the transmission medium.

Common Mistakes: A common misunderstanding is that protocols or jitter are the physical paths, but they are not. Protocols are rules for communication, and jitter refers to variations in packet delay.

Explanations: The transmission medium is the physical pathway over which data is transmitted, such as cables, optical fibers, or wireless signals. It is the essential component that allows the message to travel from the sender to the receiver.

Option Analysis:

Option A: Protocols are sets of rules and standards that govern how data is transmitted and received, not the physical path.
Option B: Transmission Medium is the correct term for the physical path over which data travels.
Option C: Jitter refers to variations in packet delay, not the physical path.
Option D: Message is the data being transmitted, not the physical path.

2. The internet functions on a ..... network.

Correct Answer: Correct answer is: (C) Distributed packet-switched.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Moderate

Concept notes: The internet is a network that uses a distributed packet-switched architecture to route data.

Common Mistakes: A common misunderstanding is that the internet uses a centralized or circuit-switched network, which it does not.

Explanations: The internet operates on a distributed packet-switched network, where data is broken into packets and each packet is independently routed through the network. This allows for efficient and flexible data transmission, as packets can take different paths to reach their destination. This architecture is different from a centralized network, where all data must pass through a central hub, or a circuit-switched network, where a dedicated path is established for the duration of the communication.

Option Analysis:

Option A: Circuit-switched networks establish a dedicated path for communication, which is not how the internet operates.
Option B: Centralized networks have a single point of control, which is not the architecture of the internet.
Option C: Distributed packet-switched networks route data packets independently, which is the correct architecture of the internet.
Option D: Direct networks imply a direct connection between two points, which is not the case for the internet.

Mnemonic: Distributed Data Packets

3. Having multiple backups to ensure reliability during cases of high usage

Correct Answer: Correct answer is: (A) Network Redundancy.

Exam Relevance: CCNA, CompTIA Network+, CISSP

Difficulty: Moderate

Concept notes: Network redundancy involves having multiple backup systems or components to ensure reliability and availability, especially during high usage or failures.

Common Mistakes: A common misunderstanding is that online backup (Option D) is the same as network redundancy. While both involve backups, online backup typically refers to data storage, whereas network redundancy focuses on maintaining network availability.

Explanations: Network redundancy ensures that a network remains operational even if one or more components fail. This is achieved by having multiple paths, devices, or systems that can take over the function of a failed component. This is particularly important during high usage periods when the network is under stress and the risk of failure is higher.

Option Analysis:

Option A: Network Redundancy is the correct answer as it involves having multiple backup systems to ensure reliability during high usage.
Option B: Net Neutrality is a principle that all internet traffic should be treated equally, and does not directly relate to backup systems.
Option C: Internet Support typically refers to customer service or technical assistance, not to backup systems.
Option D: Online Backup refers to storing data on remote servers, which is different from ensuring network reliability through redundancy.

4. Allows equipment such as fax machines, printers and files to be served to multiple computers

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

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

Difficulty: Moderate

Concept notes: A server is a computer or system that provides resources, data, or services to other computers or devices on a network.

Common Mistakes: A common misunderstanding is that a server is only used for web hosting. However, servers can also be used to share resources like printers, fax machines, and files among multiple computers.

Explanations: A server is a device that allows multiple computers to access shared resources such as printers, fax machines, and files. This is a core function of servers in networked environments, where centralized management and sharing of resources are essential.

Option Analysis:

Option A: Social media is a platform for sharing and interacting with content, not a device for sharing network resources.
Option B: A web address (URL) is a location identifier for a resource on the internet, not a device for sharing network resources.
Option C: A domain name is a human-readable name for a website or network, not a device for sharing network resources.
Option D: A server is a device that can share resources such as printers, fax machines, and files among multiple computers on a network.

Mnemonic: S-P-F: Server provides files and printers.

5. A medium for transferring data between two locations is called

Correct Answer: Correct answer is: (B) Communication channel.

Exam Relevance: CCNA, CompTIA Network+, CISSP

Difficulty: Easy

Concept notes: A communication channel is a medium through which data is transferred between two locations in a network.

Common Mistakes: A common misunderstanding is that a network itself is the medium for data transfer, but a network is a system of interconnected devices, while a communication channel is the specific medium used for data transfer.

Explanations: A communication channel is the medium used to transfer data between two points in a network. It can be a physical medium like a cable or a wireless medium like radio waves. The other options are not specific to the medium of data transfer: a network is a system of interconnected devices, a modem is a device that converts digital signals to analog and vice versa, and a bus is a subsystem that transfers data between components inside a computer.

Option Analysis:

Option A: A network is a system of interconnected devices, not a medium for data transfer.
Option B: A communication channel is the correct medium for transferring data between two locations.
Option C: A modem is a device that converts digital signals to analog and vice versa, not a medium for data transfer.
Option D: A bus is a subsystem that transfers data between components inside a computer, not a medium for data transfer between two locations.

6. In which communication, connection establishment is necessary?

Correct Answer: Correct answer is: (A) Connection oriented Communication.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: In connection-oriented communication, a dedicated connection is established before data transmission begins. This connection is maintained throughout the communication session.

Common Mistakes: A common misunderstanding is that connectionless communication also requires a connection to be established, which is incorrect. In connectionless communication, each packet is treated independently and no prior connection is established.

Explanations: Connection-oriented communication requires a connection to be established before data transmission. This ensures that the sender and receiver are synchronized and that the data is transmitted reliably. In contrast, connectionless communication does not require a connection to be established, and each packet is sent independently.

Option Analysis:

Option A: Correct. Connection-oriented communication requires a connection to be established before data transmission.
Option B: Incorrect. Connectionless communication does not require a connection to be established.
Option C: Incorrect. Only connection-oriented communication requires a connection to be established.
Option D: Incorrect. Connection-oriented communication does require a connection to be established.

7. Which transmission allows data to travel in both directions but only one direction at a time?

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

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

Difficulty: Moderate

Concept notes: In computer networks, half-duplex transmission allows data to travel in both directions but only one direction at a time.

Common Mistakes: A common misunderstanding is that half-duplex and full-duplex are the same, but full-duplex allows simultaneous data transmission in both directions.

Explanations: Half-duplex transmission allows data to be sent in both directions, but not simultaneously. This means that at any given time, data can only travel in one direction. This is in contrast to full-duplex, which allows simultaneous bidirectional data transmission, and simplex, which only allows data to travel in one direction.

Option Analysis:

Option A: Simplex transmission allows data to travel in only one direction.
Option B: Full duplex transmission allows data to travel in both directions simultaneously.
Option C: Half duplex transmission allows data to travel in both directions but only one direction at a time.
Option D: Reverse is not a standard term for data transmission modes in computer networks.

Mnemonic: HD: Half Duplex, Half Direction at a Time

8. Intranet and Extranet are .....

Correct Answer: Correct answer is: (A) Private Networks.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: Intranets and extranets are types of private networks used by organizations to share information and resources internally (intranet) or with specific external partners (extranet).

Common Mistakes: A common misunderstanding is that intranets and extranets are public networks, similar to the internet. However, they are designed to be private and secure.

Explanations: Intranets and extranets are private networks because they are designed to be used by specific groups of people within an organization or with selected external partners. They are not accessible to the general public, unlike public networks such as the internet.

Option Analysis:

Option A: Correct. Intranets and extranets are private networks.
Option B: Incorrect. Public networks are accessible to anyone, unlike intranets and extranets.
Option C: Incorrect. ISPs (Internet Service Providers) provide public internet access, not private networks.
Option D: Incorrect. Broadband networks refer to the type of internet connection, not the nature of the network (private or public).

9. A network drive is located on a computer other than the user's local system.

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

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

Difficulty: Very Easy

Concept notes: A network drive is a storage device or volume that is accessible over a network and is located on a different computer or server, not on the user's local system.

Common Mistakes: A common misunderstanding is that a network drive is located on the user's local system, which is incorrect.

Explanations: A network drive is a shared resource that is hosted on a different computer or server within a network. Users can access this drive from their local systems, but the actual storage is not on their local machine. This makes the statement true.

Option Analysis:

Option A: Correct. A network drive is indeed located on a different computer or server, not on the user's local system.
Option B: Incorrect. This would imply that a network drive is located on the user's local system, which is false.
Option C: Incorrect. This option suggests both A and B are correct, which is not the case.
Option D: Incorrect. This option implies there is no correct answer, which is not true.

10. This term refers to a port setting which allows an interface to send and receive data at the same time.

Correct Answer: Correct answer is: (B) Full Duplex.

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

Difficulty: Easy

Concept notes: Full Duplex refers to a communication mode where data can be transmitted in both directions simultaneously.

Common Mistakes: A common misunderstanding is confusing Full Duplex with Half Duplex, where data can be transmitted in both directions but not simultaneously.

Explanations: Full Duplex allows an interface to send and receive data at the same time, which is the definition provided in the question. This is a key feature in modern network interfaces to maximize throughput and efficiency.

Option Analysis:

Option A: Half Duplex allows data transmission in both directions but not simultaneously, which does not match the requirement of the question.
Option B: Full Duplex allows simultaneous data transmission in both directions, which matches the requirement of the question.
Option C: Full Monty is not a technical term in networking and does not relate to data transmission modes.
Option D: Full Override is not a recognized term in networking and does not relate to data transmission modes.

Frequently Asked Questions

What is the difference between simplex and duplex communication?

Simplex communication allows data to flow in one direction only, while duplex communication supports data flow in both directions. Duplex can be further divided into half-duplex, which allows bidirectional communication but not simultaneously, and full-duplex, which supports simultaneous bidirectional communication.

How does a packet-switched network function?

In a packet-switched network, data is broken into smaller packets that are transmitted independently across the network. Each packet is routed based on the destination address and may take different paths. This allows for efficient use of network resources and high flexibility in data transmission.

What is the role of a network drive in a distributed network?

A network drive provides a shared storage space accessible to multiple users within a distributed network. It allows for centralized storage and easy sharing of files and resources among different devices and users, enhancing collaboration and data management.

What is the purpose of network redundancy?

Network redundancy is designed to ensure continuous operation and availability of network resources by providing alternative paths or backup systems. This helps in maintaining data transmission and minimizing downtime in case of a failure or high usage.

How does an intranet differ from an extranet?

An intranet is a private network used within an organization for sharing information and resources among employees. An extranet extends the intranet to include external users, such as partners or customers, providing them with controlled access to specific resources.

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