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What is the principal function of network protocol?

• Data encryption

• Encapsulation

• Addressing

• Data transmission

Answer explanation

• Encapsulation: This is the principal function of a network protocol. It involves breaking down large processes into smaller tasks and functions to help connected devices communicate across a network¹²³.

• Data encryption: This is a security measure that involves encoding data to prevent unauthorized access.

• Addressing: This involves assigning a unique identifier to each device on a network to ensure data is sent to the correct destination.

• Data transmission: This is the process of sending digital or analog data over a communication medium to one or more computing, network, communication, or electronic devices.

What is the responsibility of the Physical Layer in a network?

• Data transmission

• Transmission and receipt of signals

• Data encryption

• Data storage

Answer explanation

• Transmission and receipt of signals: This is the primary responsibility of the Physical Layer in a network. It involves the transmission and receipt of raw data streams over a physical medium.

• Data transmission: This is the process of sending digital or analog data over a communication medium to one or more computing, network, communication, or electronic devices.

• Data encryption: This is a security measure that involves encoding data to prevent unauthorized access.

• Data storage: This refers to the act of saving data in a storage medium by computing technology.

What is the process of adding fields in a header at each layer for data messages?

• Decapsulation

• Addressing

• Encapsulation

• Data transmission

Answer explanation

encapsulation ensures proper data handling and communication across different network layers!

What is the device that amplifies an electronic signal to extend the max allowable distance?

• Transceiver

• Repeater

• Hub

• Media converter

Answer explanation

A repeater receives an electronic signal and then retransmits it, allowing the signal to cover longer distances or reach the other side of obstructions. Essentially, it amplifies the signal to extend its reach

What is the mechanical specification for the network medium such as cable specifications and connector details?

• Physical Topology

• Cabled media

• Signaling

• Physical Interface

Answer explanation

• Physical Interface: It specifies the mechanical, electrical, and procedural details for the network medium, including cable specifications and connector details.

• Physical Topology: It refers to the physical layout of devices and the connections between them in a network.

• Cabled media: This term describes the physical conductors, such as copper or fiber optic cables, that connect nodes in a network.

• Signaling: It is the process of generating and interpreting signals to transmit and receive data over a network medium

What is the process of transmitting and receiving encoded data over the network medium?

• Signaling

• Data storage

• Data transmission

• Addressing

Answer explanation

• Signaling: It is the process of transmitting and receiving encoded data over a network medium.

• Data storage: This term refers to the act of archiving data in electromagnetic or other forms for use by a computer or device.

• Data transmission: This is the process of sending data between two or more devices via a transmission medium such as a wire, cable, or wireless media.

• Addressing: This involves assigning a unique identifier to each device on a network to ensure data is sent to the correct destination.

What is the device that converts one media signaling type to another?

• Media converter

• Transceiver

• Repeater

• Hub

What is the area of a larger network that improves performance or security?

• Physical Interface

• Signaling

• Physical Topology

• Cabled media

Answer explanation

• Media converter: A device that converts signals between different types of cabling or media.

• Transceiver: A device that both sends and receives signals over network media.

• Repeater: A device that amplifies an electronic signal to extend the maximum allowable distance for a media type.

• Hub: A multiport repeater that serves as the central point of connection for nodes.

What is the device that performs some type of signal modulation and demodulation?

• Media converter

• Transceiver

• Repeater

• Modem

Answer explanation

• Modem: A device that performs both modulation and demodulation, typically used in bidirectional communication.

• Media converter: A device that converts signals between different types of cabling or media.

• Transceiver: A device that both sends and receives signals over network media.

• Repeater: A device that amplifies an electronic signal to extend the maximum allowable distance for a media type.

What is the device that sends and receives signals over the network medium?

• Transceiver

• Modem

• Repeater

• Hub

Answer explanation

• Transceiver: A device that both sends and receives signals over network media.

• Modem: A device that performs both modulation and demodulation, typically used in bidirectional communication.

• Repeater: A device that amplifies an electronic signal to extend the maximum allowable distance for a media type.

• Hub: A multiport repeater that serves as the central point of connection for nodes.