Computer networking MCQ – Change your future

661. TDM is used to combine

Correct Answer: Correct answer is: (A) Analog signals.

Exam Relevance: GATE, ECE Exams, Telecommunications Engineering Exams

Difficulty: Easy

Concept notes: Time Division Multiplexing (TDM) is a method used to combine multiple analog signals into a single channel by allocating different time slots for each signal.

Common Mistakes: Students often confuse TDM with Digital Signal Processing (DSP) techniques, which are used for digital signals.

Explanations: TDM is specifically designed to combine multiple analog signals by allocating different time slots for each signal. This allows multiple analog signals to be transmitted over a single channel without interference. The claimed correct answer is that TDM is used to combine analog signals, which is accurate based on the definition and application of TDM.

Option Analysis:

Option A: Correct. TDM is used to combine analog signals by allocating different time slots for each signal.
Option B: Incorrect. TDM is not used to combine digital signals; it is primarily used for analog signals.
Option C: Incorrect. TDM is not used to combine both analog and digital signals; it is specifically for analog signals.
Option D: Incorrect. This option is not correct as TDM is indeed used to combine analog signals.

662. Computer software which combines audio and video application sharing is known as

Correct Answer: Correct answer is: (A) Teleconferencing software.

Exam Relevance: GRE, GMAT, IT Certification Exams

Difficulty: Easy

Concept notes: Teleconferencing software is designed to facilitate real-time communication between multiple participants, often combining audio, video, and application sharing features.

Common Mistakes: Students may confuse teleconferencing software with data sharing software, which typically focuses on file transfer and collaboration rather than real-time communication.

Explanations: Teleconferencing software integrates audio and video communication with application sharing, allowing participants to see and hear each other while also sharing and collaborating on applications and documents in real-time. This makes it the most appropriate choice for the given description.

Option Analysis:

Option A: Teleconferencing software is the correct choice as it combines audio, video, and application sharing functionalities.
Option B: Data sharing software primarily focuses on file transfer and collaboration, not real-time audio and video communication.
Option C: Project sharing software is typically used for collaborative project management and does not necessarily include audio and video features.
Option D: Utility software is a broad category that includes various tools but does not specifically combine audio, video, and application sharing.

663. Consider the following Statements: Wireless connections can carry more data around the network than wired connections Washing Digital Watch , Laptop and mobile can be connected through Home Area Network Without a protocols computers of different makes would be able to communicate with each other Which of the following statement(s) is/are true?

Correct Answer: Correct answer is: (A) Only 2,.

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: The correct answer is based on the understanding of network connectivity and the role of protocols in communication between different devices.

Common Mistakes: Students may incorrectly assume that wireless connections can carry more data than wired connections, which is not always true.

Explanations: Statement 2 is true because a Home Area Network (HAN) can connect various devices such as a digital watch, laptop, and mobile phone. Statement 3 is false because without protocols, computers of different makes would not be able to communicate effectively. Statement 1 is false because wired connections generally carry more data than wireless connections.

Option Analysis:

Option A: Correct, as only statement 2 is true.
Option B: Incorrect, as statement 3 is false.
Option C: Incorrect, as statements 1 and 3 are false.
Option D: Incorrect, as statement 3 is false.

664. A network in which devices can function as clients or servers

Correct Answer: Correct answer is: (A) Client/server network.

Exam Relevance: CISSP, CompTIA Network+, CCNA

Difficulty: Moderate

Concept notes: In a client/server network, devices can function as both clients and servers, depending on the context and the specific application or service being used.

Common Mistakes: Students may confuse client/server networks with peer-to-peer networks, where devices typically function as both client and server simultaneously.

Explanations: A client/server network allows devices to act as clients when requesting services and as servers when providing services. This flexibility is a key characteristic of client/server networks, making them suitable for environments where roles can change dynamically.

Option Analysis:

Option A: Correct. Client/server networks allow devices to function as both clients and servers, depending on the context.
Option B: Incorrect. A dedicated network typically refers to a network that is set up for a specific purpose and does not imply the ability of devices to function as both clients and servers.
Option C: Incorrect. A non-dedicated network does not specifically imply the ability of devices to function as both clients and servers.
Option D: Incorrect. A gateway network is a network that connects different networks and does not specifically imply the ability of devices to function as both clients and servers.

665. Two devices are in network if

Correct Answer: Correct answer is: (A) A process in one device is able to exchange information with a process in another device.

Exam Relevance: Computer Networks, Operating Systems, Network Security

Difficulty: Easy

Concept notes: The concept of devices being in a network is fundamentally about the ability to exchange information between processes running on different devices.

Common Mistakes: A common mistake is to assume that devices are in a network if they are running the same process or have the same process identifiers (PIDs), which is incorrect.

Explanations: Devices are considered to be in a network when a process on one device can communicate and exchange information with a process on another device. This communication can occur through various network protocols and does not require the processes to be identical or have the same PIDs.

Option Analysis:

Option A: This is the correct definition of devices being in a network.
Option B: Running a process on both devices does not necessarily mean they are in a network; they must be able to exchange information.
Option C: Having the same PIDs does not imply network connectivity; PIDs are unique to each device.
Option D: This is incorrect as Option A is the correct answer.

666. In networks that do not support physical multicast addressing, multicasting can be accomplished through.....

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

Exam Relevance: CCNA, CCNP, Network+

Difficulty: Moderate

Concept notes: In networks that do not support physical multicast addressing, multicasting can be achieved through tunneling. Tunneling involves encapsulating multicast packets within unicast packets, allowing them to traverse networks that do not natively support multicast traffic.

Common Mistakes: Students may mistakenly believe that mapping or queries are sufficient methods for multicasting in networks that do not support physical multicast addressing.

Explanations: Tunneling is the correct method because it allows multicast traffic to be transmitted over networks that do not natively support multicast addressing. By encapsulating multicast packets within unicast packets, the network can route the traffic as if it were unicast traffic, effectively bypassing the limitations of the network's multicast support.

Option Analysis:

Option A: Mapping does not provide a mechanism to transmit multicast traffic over networks that do not support multicast addressing.
Option B: Queries are used for discovery and management but do not provide a method for transmitting multicast traffic.
Option C: Tunneling encapsulates multicast packets within unicast packets, allowing multicast traffic to traverse networks that do not support multicast addressing.
Option D: This option is incorrect as tunneling is a valid method for multicasting in networks that do not support physical multicast addressing.

Mnemonic: TUNNEL: Transmitting Unicast Nests Network Encapsulated Layers

667. Which of the following devices direct network traffic based not by MAC addresses but by software-configured network addresses?

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

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Moderate

Concept notes: Routers operate at the network layer of the OSI model and use IP addresses to direct traffic between different networks.

Common Mistakes: Students may confuse routers with switches or bridges, which operate at the data link layer and use MAC addresses.

Explanations: Routers use IP addresses, which are software-configured network addresses, to direct traffic between different networks. This is in contrast to devices like hubs and bridges, which operate at the data link layer and use MAC addresses for traffic direction.

Option Analysis:

Option A: Routers use IP addresses to direct traffic, which are software-configured network addresses.
Option B: Hubs operate at the physical layer and do not use network addresses to direct traffic.
Option C: Bridges operate at the data link layer and use MAC addresses to direct traffic.
Option D: NICs (Network Interface Cards) are used to connect devices to a network and do not direct traffic.

Mnemonic: Routers Route Ranges, Not MACs.

668. Layer that is in between of session and application layer is

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

Exam Relevance: CCNA, CISSP, CompTIA Network+

Difficulty: Easy

Concept notes: The OSI model has seven layers, and the layer between the session and application layers is the presentation layer.

Common Mistakes: Students may confuse the presentation layer with the transport layer, which is actually between the session layer and the network layer.

Explanations: In the OSI model, the presentation layer is responsible for data representation and encryption. It is located between the session layer, which manages sessions between applications, and the application layer, which interacts directly with software applications.

Option Analysis:

Option A: The network layer is not between the session and application layers. It is below the transport layer.
Option B: The transport layer is not between the session and application layers. It is below the session layer.
Option C: The presentation layer is correctly positioned between the session and application layers in the OSI model.
Option D: The data link layer is not between the session and application layers. It is below the network layer.

Mnemonic: S-P-A: Session, Presentation, Application

669. Bandwidth is

Correct Answer: Correct answer is: (C) The amount of data that can travel at any one point.

Exam Relevance: CCNA, CompTIA Network+, CISSP

Difficulty: Moderate

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

Common Mistakes: Students often confuse bandwidth with the speed at which data travels, which is a common misconception.

Explanations: Bandwidth is defined as the amount of data that can travel through a network or communication channel at any given time. It is a measure of the capacity of the channel, not the speed at which the data travels. This capacity is typically measured in bits per second (bps) or a higher unit like megabits per second (Mbps). The correct answer, therefore, is the amount of data that can travel at any one point, as it accurately reflects the definition of bandwidth.

Option Analysis:

Option A: This option is incorrect because bandwidth is directly related to the capacity of the data transmission, not unrelated to it.
Option B: This option is incorrect because it describes speed, not capacity.
Option C: This option is correct because it accurately describes the capacity of data transmission.
Option D: This option is incorrect because it refers to the size of the wi-fi, which is not related to bandwidth.

670. The physical identification number of a device is known as .....

Correct Answer: Correct answer is: (B) Media access control (MAC Address).

Exam Relevance: CCNA, CompTIA Network+, A+

Difficulty: Easy

Concept notes: The Media Access Control (MAC) address is a unique identifier assigned to network interfaces for communications at the data link layer of a network segment.

Common Mistakes: Students may confuse the MAC address with the IP address, which is used at the network layer and can change.

Explanations: The MAC address is a unique identifier assigned to each network interface card (NIC) by the manufacturer. It is a physical address that remains constant and is used to identify devices on a local network. This makes it the correct answer for the physical identification number of a device.

Option Analysis:

Option A: Network address refers to an IP address, which is not a physical identifier and can change.
Option B: Media Access Control (MAC Address) is the correct answer as it is a unique physical identifier for a device.
Option C: Internet Protocol (IP) address is a logical address used for routing and can change.
Option D: None of the above is incorrect as the MAC address is the correct answer.

Mnemonic: MAC - My Address Constant

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Computer networking MCQ - Set 67

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