Introduction to Networks

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

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

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

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

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

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

What is the function of the sender in data communication?

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

In which mode can both stations transmit and receive simultaneously?

What represents an agreement between communicating devices in data communications?

What are the components of data communication?

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

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

Which networking metric is often used to evaluate performance?

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

What is the primary purpose of a network?

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

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

What differentiates an effective network from an ineffective one?

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

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.

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.