NET 101 MODULE 5 Flashcards
was developed by the International
Organization for Standardization (ISO).
Open Systems Interconnection Reference Model, or the
OSI model
It is a reference model that describes how information from
a software application in one computer moves through a
physical medium to the software application in another
computer.
Open Systems Interconnection Reference Model
It describes how data and network information are
communicated from one application on one computer
through the network media to an application on another
computer.
Open Systems Interconnection Reference Model
7 Layers of the OSI Model
Physical
Data Link
Network
Transport
Session
Presentation
Application
is a of communication protocols used to
interconnect network devices on the Internet.
TCP/IP or Transmission Control Protocol/Internet Protocol
helps you to determine how a specific
computer should be connected to the internet and how
data should be transmitted between them.
TCP/IP Model
is to allow
communication over large distances.
TCP/IP model
TCP/IP MODEL WITH
DIFFERENT LAYERS
Application - allow access to network resource
Transport - provide reliable process to process message and error delivery
Internet - move packets from source to destination it also provide internetworking
Network Access - responsible for the transmission for the between two device on the same network
Transmit raw bit stream over physical medium
Phyiscal
Defines the format of data on the network
Data Link
Decides which physical path the data will take
Network
Transmit data using transmission protocols including TCP and UDP
Transport
Maintains connections and is responsible for controlling ports and sessions
Session
Ensures the data is in a usable format and is where data encryption occurs
Presentation
Human-computer interaction layer,
where applications can access the
network services
Application
