Introduction to Networks

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Questions and Answers

Which of the following is NOT considered a node in a network?

Printer

Satellite (correct)

Smartphone

Computer

What other devices, besides computers, can be nodes in a network?

Projector

Fax machine

Scanner

All of the above (correct)

In terms of data communication, what does 'timeliness' refer to?

Data delivery to the intended destination

Data security

Data speed (correct)

Data accuracy

What type of communication medium can be used to connect devices in a network?

Fiber optics, microwaves, infrared, and satellites Signup and view all the answers

What is the main characteristic of effective data communication related to accuracy?

Data received accurately by the intended device or user Signup and view all the answers

Which mode of data communication is unidirectional, like a one-way street?

Simplex Signup and view all the answers

What is the function of the sender in data communication?

Sends the data message Signup and view all the answers

Which network criteria can be measured using transit time and response time?

Performance Signup and view all the answers

In which mode can both stations transmit and receive simultaneously?

Full-duplex Signup and view all the answers

What represents an agreement between communicating devices in data communications?

Protocol Signup and view all the answers

What are the components of data communication?

Message, sender, receiver, protocol, transmission medium Signup and view all the answers

Which mode of data communication allows both stations to transmit and receive, but not at the same time?

Half-duplex Signup and view all the answers

What is the function of the transmission medium in data communication?

To provide the physical path for the message to travel from sender to receiver Signup and view all the answers

Which networking metric is often used to evaluate performance?

Throughput Signup and view all the answers

What criteria can be used to measure the performance of a network?

All of the above Signup and view all the answers

What is the primary purpose of a network?

To ensure accurate and timely delivery of data Signup and view all the answers

Which characteristic of effective data communication ensures that only the intended device or user receives the data?

Delivery Signup and view all the answers

In what way can two computers be said to be interconnected?

If they are able to exchange information Signup and view all the answers

What differentiates an effective network from an ineffective one?

The ability to deliver data accurately and in a timely manner Signup and view all the answers

Which mode of data communication refers to the ability of both stations to transmit and receive simultaneously?

Full-duplex mode Signup and view all the answers

Study Notes

Network Fundamentals

Not all devices in a network are considered nodes; printers, for example, are not nodes.
Besides computers, other devices that can be nodes in a network include printers, scanners, and servers.

Data Communication

Timeliness refers to the ability of a system to deliver data within a specified time constraint.
Various types of communication media can be used to connect devices in a network, including twisted-pair cables, coaxial cables, fiber optic cables, and wireless networks.

Data Communication Modes

Simplex mode is unidirectional, like a one-way street, where one station can only transmit and the other can only receive.
Half-duplex mode allows both stations to transmit and receive, but not at the same time.
Full-duplex mode enables both stations to transmit and receive simultaneously.

Data Communication Process

The sender is responsible for converting the data into a transmittable format and sending it over the transmission medium.
The transmission medium is used to transmit data between devices.

Network Performance

Network criteria can be measured using transit time and response time.
Throughput is often used to evaluate the performance of a network.
Performance can be measured using criteria such as bandwidth, latency, and reliability.

Network Security

The primary purpose of a network is to share resources and exchange data between devices.
Confidentiality ensures that only the intended device or user receives the data.

Network Characteristics

Two computers are said to be interconnected if they can exchange data.
An effective network is differentiated from an ineffective one by its ability to provide reliable, efficient, and secure data communication.
A protocol represents an agreement between communicating devices in data communication.
The components of data communication include the sender, receiver, message, transmission medium, and protocol.

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Description

Learn about the basics of networks, including the definition of a network, the types of devices involved, and the various communication links used for connection. Explore the different sizes, shapes, and forms of networks.