1. Assignment
On
3rd
class note
Course Title : Data communication
Course code : CSE 313
Submitted to
Pranab bandhu nath
Lecturer
Department of CSE
City University
Submitted by
Md.Ismail
Id:1834902082
Batch : 49th
(B)
Department of CSE
City University
Submission date : 01.09.2021
2. OSI model
The OSI model (open systems interconnection model) is a conceptual framework used to
describe the functions of a networking system.
OSI Model
Application
Presentation
Session
Transport
Network
Data link
Physical
Working procedure of OSI Model layers
Application – compose data for sending using some protocol (http,FTP)
Presentation – Encryption
Session – net bios,remote devices
Transport – data divided some packet
Network - IPV4,IPV6,Routing
Data link – MAC ,media access control
Physical – Hardware specification
Reference : https://en.wikipedia.org/wiki/OSI_model
TCP/IP Model
TCP(Transmission IP ( Internet protocol)
control protocol)
3. The TCP/IP Model is a concise version of the OSI model.It contains 5 layers,unlike seven layers
in the OSI model.
TCP/IP Model
Application(Application,
presentation, session)
Host to Host
Internet
Network access memory
(data link layer,physical)
The Open systems interconnection model is a conceptual mode .
During working TCP/IP model ,here works some protocol like
Application layer – DNS,BOOTP,DHCP,FTP etc.
Transport layer – UDP,TCP etc
Internet layer – NAT,RIP etc
Network access layer – PPP, ethernet, interface drivers
The protocol that make up TCP/IP define
How data is transmitted across a network
How data should be formatted so other Network system can understand it.
Two key TCP/IP feature supports
1. End node verification
2. Dynamic routing
Network issue
Addressing
Routing
Name resolution
Flow and error control
Inter operability
Rference : https://www.geeksforgeeks.org/tcp-ip-model/
Reference : https://en.wikipedia.org/wiki/OSI_model