TCP/IP Concepts

1. TCP/IP Concepts
Jacob Jespersen 2140791

2. OSI Reference Model

3. The Network Interface Layer
• This layer is also known as the physical
layer, it is defined by what type of
physical network your computer is
connected to. TCP/IP is a set of
protocols that deals with layers 3 to 7
of the OSI reference model, while
Ethernet is a set of protocols that
deals with layers 1 and 2 from the OSI
reference model.

4. Internet Layer On TCP/IP networks
each computer is
identified with a unique
virtual address, called IP
address. The internet
layer is in charge of
adding a header to the
data packet received
from the transport layer
where, among other
control data, it will add
the source IP address
and the target IP
address

5. Transport Layer
• When transmitting data, the
transport layer gets data from the
application layer and divides them
into several data packets. TCP is
the most used protocol on the
transport layer. TCP protocol also
determines if received packets
arrive intact and in order and will
send an acknowledge signal to the
transmitter if all is well.

6. Application Layer This layer makes the
communication between
programs and the
transport protocols.
There are several
different protocols that
work on the application
layer.

7. Data Encapsulation
Alternatively Data
decapsulation reverses this
process, taking the
information up the osi
reference model removing
the headers that were added
on in the encapsulation
process.

8. Conclusions and Biblography
• http://www.hardwaresecrets.com/printpage/The-OSI-Reference-
Model-for-Network-Protocols/431
• http://www.youtube.com/watch?v=m07L9y3pSB4