2. OSI & IP/TCP MODEL
There are 7 Layer in OSI Model & 4 Layers in IP/TCP Model-
i) Physical
ii) Data Link
iii) Network
iv) Transport
v) Session
vi) Presentation
vii) Application
Application
Network interface
Internet
Transport
3. Difference Between OSI & IP/TCP
Model
IP/TCP OSI
TCP refers to Transmission Control Protocol /
Internet Protocol.
OSI refers to Open Systems Interconnection.
TCP/IP uses both session and presentation
layer in the application layer itself.
OSI uses different session and presentation
layers.
TCP/IP is more reliable OSI is less reliable
TCP/IP does not have very strict boundaries. OSI has strict boundaries.
TCP/IP follow a horizontal approach OSI follows a vertical approach
TCP/IP developed protocols then model OSI developed model then protocol.
Protocols cannot be replaced easily in TCP/IP
model.
While in OSI model, Protocols are better
covered and is easy to replace with the change
4. Network Adressing
A network address is an identifier for a node or host on a telecommunications network.
Network addresses are designed to be unique identifiers across the network, although some
networks allow for local, private addresses, or locally administered addresses that may not be
unique.
There are two types of Network adress…..
Network Adress
physical
Logical
5. Physical Network Adress
In computing, physical address refers to a memory address or the
location of a memory cell in the main memory. In networking, physical
address refers to a computer's MAC address, which is a unique
identifier associated with a network adapter that is used for identifying
a computer in a network
6. Logical Network Adress
Logical addresses are created and used by Network layer protocols
such as IP or IPX. The Network layer protocol translates logical
addresses to MAC addresses. For example, if you use IP as the Network
layer protocol, devices on the network are assigned IP addresses such
as 205.110. 67.30
