OSI Model Session & Presentation Layer | Computer Networks Tutorial
Session Layer : OSI
The Session Layer is
the 5th layer of
OSI Model and it provides appropriate sessions
between users and software where users interacts.
This layer can be
used on the basis of resources available and it can be skipped too if not
requires(TCP/IP model skips this layer as it not much of
The Session Layer
deals with the establishment and management of sessions among the
application software keeping the user personal data away.
For example : Login session in IRCTC train reservation portal
or Online payment session.
Session Layer : Functions &
These are some of
the major feature performed by Session Layer:
Session Layer : Architecture
Presentation Layer : OSI
Layer is the 6th layer of OSI Modeland it provides appropriate
representation of data through various data presentation
transmission takes place, it might be possible that data on sender’s end
might look different or might not support at receiver end. So, Presentation
Layer ensures that data presented in same format at both sender’s and
Presentation Layer :
Functions & Features
Layer ensures that translation of data among different devices. So,
irrespective of the devices used, presentation layer ensures data must be
presented similarly on all those devices.
Data encryption and
data decryption are other features of presentation layer.
technique is another major feature of this layer.