Data communication & network
- 1. Course Instructor : Hannan Pathan Data Communications
- 2. Lecture Overview What is Data communication? Importance of Data communication Fundamental characteristics of a data communication system Components of a data Communication system Network
- 3. What is Data Communication? The word data refers to facts,concepts and instructions presented in whatever form is agreed upon by the parties creating and using the data. In context of computer information systems data are represented by binary information units(or bits) produced and consumed in the form of 0’s and 1’s. Data Communication is the exchange of data (in the form of 0’s and 1’s) between devices via some form of transmission medium(such as a wire cable). Local and remote data communication For data communication to occur the communicating devices must be a part of a communication system made up of a combination of hardware & software.
- 4. Data Communication Data communications refers to the transmission of this digital data between two or more computers. Data communications (DC) is the process of using computing and communication technologies to transfer data from one place to another, and vice versa. It enables the movement of electronic or digital data between two or more nodes. For example, a common example of data communications is a computer connected to the Internet via a Wi-Fi connection, which uses a wireless medium to send and receive data from one or more remote servers.
- 5. Importance of Data communication Entertainment Business Education & research Space missions Telecommunications
- 6. Fundamental characteristics of a data communication system The effectiveness of a data communication system depends on three fundamental characteristics: Delivery Accuracy Timeliness
- 7. Components of a Data communication system
- 8. Networks A network is a set of devices(often referred to as nodes) connected by media links. A node can be a computer, printer or any other device capable of sending and/or receiving data generated by other nodes on the network. The links connecting the devices are often called communication channels.
- 9. HAVE A NICE DAY!!!