When we study the subject of computer network, we encounter many terminologies associated with the subject. Some terminologies are briefly described below. 1. Entity :: The active component in each layer are called entities. Entity can be a software process or hardware like an intelligent input/output device etc. 2. Peer Entity :: Entities in the same layer running on different machines are called peer entities. 3. Service provider and service user :: In a layered…"Terminologies Associated with Computer Network"