It deals with the Apps on the
device. It turns the information of a
website or application into data.
It's hardware is located inside
the device and it uses protocols
of HTTP, FTP and SMTP
Order Of The Layers
Application Layer (1)
Transport Layer (2)
Network Layer (3)
Link Layer (4)
Transport Layer
It deals with data flow. It splits it into
packets along with adding all the
relevant information. (Header,Source
address, Destination address, Check
sum & the data being sent)
Its hardware consist of Proxy
servers, Gateways and Firewalls.
It uses the protocol TCP
Network Layer
It makes connections between
networks and directs the data across
the network (Packet Switching)
Its hardware are
routers and switches.
It uses the Protocol IP.
Link Layer
It deals with the Hardware of the
network. it also manages the signals
to and from the network connections.
Its hardware consists of cables,
hubs and connectors. It uses
the Protocol Ethernet and Wifi