Protocol and Standard
What is Protocol A protocol is a set of rules that govern data communications. Protocol defines: What is communicated How it is communicated When it is communicated The key elements of a protocol are: Syntax : structure/format of the data (the order in which they are presented). Semantics : meaning of each section of bits (does an address identify the route to be taken or the final destination of the message?) Timing : when data should be sent and how fast they can be sent. Example sender produces data at 100 Mbps but the receiver can process data at only 1 Mbps – thus the transmission will overload the receiver and data largely lost. Standards Standards provides a model for development that makes it possible for a product to work regardless of the individual manufacturer. Standards by fact NOT been approved by an organized body but have been adopted as standards through widespread use. Example. Hayes modem command set, IBM PC bus Standards By laws