Guided Media: In this transmission medium, the physical link is created using wires or cables between two or more computers or devices, and then the data is transmitted using these cables in terms of signals. We can group the communication media into two categories:ġ. The transmission medium or channel is a link that carries messages between two or more devices. It is also known as a transmission medium. Workstations can be connected by either wired media or wireless media. For example, mobile phones, landlines, etc.Ĭommunication channels are the medium that connects two or more workstations. Full-duplex communication: It is a two-way communication or we can say that it is a bidirectional communication in which both the devices can send and receive data at the same time.When one device is sending data then another device is only receiving and vice-versa. Half Duplex communication: It is a two-way communication or we can say that it is a bidirectional communication in which both the devices can send and receive data but not at the same time.For example, IoT, entering data using a keyboard, listing music using a speaker, etc. Simplex Communication: It is one-way communication or we can say that unidirectional communication in which one device only receives and another device only sends data and devices uses their entire capacity in transmission.The data communication is divided into three types: Well! IP is responsible for handling the address of the destination computer so that each packet is sent to its proper destination.Īs we know that data communication is communication in which we can send or receive data from one device to another. What happens if the message you sent to your friend is received by your father? Scary Right. IP(Internet Protocol): Do You ever wonder how does computer determine which packet belongs to which device.It also makes sure that the packets have the information about the source of the message data, the destination of the message data, the sequence in which the message data should be re-assembled, and checks if the message has been sent correctly to the specific destination. TCP(Transmission Control Protocol): It is responsible for dividing messages into packets on the source computer and reassembling the received packet at the destination or recipient computer.Therefore, there are some set of rules (protocols) that is followed by every computer connected to the internet and they are: If Sonali writes in Hindi and Chetan cannot understand Hindi, it is a meaningless conversation. For example, Sonali sends a message to Chetan. Set of rules (Protocol): When someone sends the data (The sender), it should be understandable to the receiver also otherwise it is meaningless.Transmission Medium / Communication Channels: Communication channels are the medium that connect two or more workstations.It can be a computer, telephone mobile, workstation, etc. Receiver: It is a device that receives messages.It can be a computer, mobile, telephone, laptop, video camera, or workstation, etc. Sender: It is simply a device that sends data messages.It could be a text file, an audio file, a video file, etc. Message: A message is a piece of information that is to be transmitted from one person to another.Role of Mahatma Gandhi in Freedom Struggle.
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