Radio is the technology of communication by means of electromagnetic waves. The electronic devices transmitting and receiving these waves and signals are also referred to as radio. A data link is a set of electronics appliances, consisting of at least a transmitter and a receiver together with an interconnecting data communication circuit. These are governed
Error control in the Data Link Layer is a mechanism used to ensure that transmitted data is transferred accurately and reliably. Error control has the following key functions: Error Detection The Data Link layer uses various methods to detect possible errors in transmitted data frames. Errors can occur during the transmission of a data frame