Introduction of computer network

The Computer courses in Chandigarh provided institute give the detail and Introduction of Computer network to the student know about the Computer very well.

The scenario of the modern world is changing all the time. Data communication and networks have changed the way of business and other day-to-day operations. Currently, they rely heavily on computer networks and inter networks. A set of devices often referred to as a node connected by a media link is called a network.

A node may be a device capable of sending and receiving data generated by other nodes on a network such as a computer or a printer. The link connecting these devices is called a communication channel.

In a computer network, two or more computers are connected together with a computer and data communication devices so that the purpose of sharing data with data communication and other devices connected to the same network and devices. It is also called a data network. The best example of a computer network is the internet.

A computer network does not mean a system in which one control unit is connected to multiple other systems as a slave. It is not a computer network, it is a distributed system.

The network must be able to meet certain criteria. Computer courses in Chandigarh are described below.

• performance
• reliability
• Scalability

Computer network: Performance

This can be measured in the following way.

Transit time: The time and requirement required to get a message from one device to another.

Response time: Defined as the time elapsed between inquiry and response.

Another way to measure performance is as follows.

• Software efficiency
• Number of users
• The ability of connected hardware

Computer network: Reliability

Determines how often network failures occur. The more obstacles, the lower the reliability of the network.

Computer network: Security

This refers to the protection of data from unauthorized users or access. While traveling through the network, data passes through many layers of the network and can track data if it is attempted. Therefore, security is a very important characteristic of the network.

Proper Computer network properties

Interpersonal communication: We can communicate with each other efficiently and easily. Example: Email, chat room, video conference and so on. All these are possible for computer networks.

Resources can be shared: You can share physical resources by making physical resources available on a network such as a printer, scanner, etc.

File, data sharing: Allowed users can share files over the network. File sharing is the practice of providing or providing access to digital media,

Basic communication model

Communication model is used to exchange data between the two parties. For example, communication between computers, servers, and phones (via modem). The institutes of Computer courses in Chandigarh, In which the basic computer course they provides the knowledge and detail of Communication model.

Source

This device generates the data to be transmitted (eg phone, personal computer etc).

A Transmitter

Data generated by the source system is not sent directly in the generated format. The transmitter transforms and encodes the data in such a way as to generate electromagnetic waves or signals.

Transmission system

The transmission system can be a single transmission line or a complex network connecting sources and destinations.

Receiver

The receiver receives the signal from the sending system and converts it to a form easily managed by the destination device.

Destination

The destination receives incoming data from the receiving side.

Data communication

Data communication refers to transmitting this digital data between two or more computers and a computer network or data network is a telecommunications network that allows a computer to exchange data

Data exchange between two devices via a transmission medium is called data communication. Data is exchanged in the form 0 and 1. The transmission medium used is a wire cable. In order for data communication to occur, the communication device must be part of the communication system. There are two types of data communication, local and remote, as described below.

Data communication: local

Local communication occurs when the communication device is in the same geographical area, the same building, or face to face.

Data communication: remote

Telecommunication takes place far away, that is far away. The effectiveness of data communication can be measured by the following functions.

Delivery: It is necessary to deliver to the correct delivery destination.

Timeliness: delivery should be on time.

Accuracy: The data must be accurate.

Data communication component

• Message: Information to be delivered.
• Sender: The sender is the person sending the message.
• Recipient: The recipient is the person to whom the message is sent.
• Media: The media to which the message is sent. Example: Modem.
• Protocol: This is a set of rules that manage data communication.

In the above the Computer courses in Chandigarh provides CCNA training in Chandigarh and in this article people read and know about Computer Network.