Layer 5 of the OSI model is the Session Layer, which
establishes, manages, and terminates sessions between
applications. Following are some of the communication tasks
performed at this layer: - Establishing connections -
Maintaining connections - Synchronizing communications -
Controlling dialogues - Terminating connections When you create
a connection, you authenticate the user account at the sending
and receiving computers. Connection creation also involves
determining the type of communication that will take place and
the protocols that will be used by the lower layers. Data
transfer and dialogue control are used to determine which
computer is making requests and which computer is making
responses. This also determines whether acknowledgments are
required for data transmission. A session is a series of related
connection-oriented transmissions between network nodes. Another
way to look at it is that a session is the interrelated
communications between two or more presentation entities, which
emphasizes tha