Internet Communication System[1][1]

8/3/2019 Internet Communication System[1][1]

1/31

INTERNETCOMMUNICATION

SYSTEM


2/31

HISTORY

Professor LeonardKleinrock with one ofthe first ARPANETInterface Message

Processors at UCLA
http://en.wikipedia.org/wiki/Leonard_Kleinrockhttp://en.wikipedia.org/wiki/Leonard_Kleinrockhttp://en.wikipedia.org/wiki/Interface_Message_Processorhttp://en.wikipedia.org/wiki/Interface_Message_Processorhttp://en.wikipedia.org/wiki/Interface_Message_Processorhttp://en.wikipedia.org/wiki/Interface_Message_Processorhttp://en.wikipedia.org/wiki/Leonard_Kleinrockhttp://en.wikipedia.org/wiki/Leonard_Kleinrock


3/31

HISTORY

This NeXT Computerwas used by Sir TimBerners-Lee at CERNand became the

world's first Webserver.
http://en.wikipedia.org/wiki/NeXT_Computerhttp://en.wikipedia.org/wiki/Sir_Tim_Berners-Leehttp://en.wikipedia.org/wiki/Sir_Tim_Berners-Leehttp://en.wikipedia.org/wiki/CERNhttp://en.wikipedia.org/wiki/Web_serverhttp://en.wikipedia.org/wiki/Web_serverhttp://en.wikipedia.org/wiki/Web_serverhttp://en.wikipedia.org/wiki/Web_serverhttp://en.wikipedia.org/wiki/CERNhttp://en.wikipedia.org/wiki/Sir_Tim_Berners-Leehttp://en.wikipedia.org/wiki/Sir_Tim_Berners-Leehttp://en.wikipedia.org/wiki/Sir_Tim_Berners-Leehttp://en.wikipedia.org/wiki/Sir_Tim_Berners-Leehttp://en.wikipedia.org/wiki/NeXT_Computer


4/31

INTERNET

Short form of the technical terminternetwork.

Hardware and software infrastructure thatprovides connectivity between computers.

Global system of interconnected computer

networks that use the standard InternetProtocol Suite (TCP/IP) to serve billions ofusers worldwide.


5/31

INTERNET

Global system of interconnectedcomputer networks

two or more computers connected to each other

by communication channels that facilitatecommunications among users and allows users to

share resources


6/31

COMPUTER NETWORK


7/31

COMPUTER NETWORK


8/31

COMPUTER NETWORK


9/31

INTERNET

Short form of the technical terminternetwork

is the practice of connecting a computer network

with other networks through the use of gateways


10/31

INTERNETWORK


11/31

INTERNETWORK


12/31

INTERNET

GATEWAY (TELECOMMUNICATIONS)

- a network node equipped for interfacing withanother network that uses different protocols.

Juniper SRX210 service gateway


13/31

PROTOCOLS

- are the agreed upon ways, communicationlanguage and a set of rules which both the

networking computers understand andcommunicate with each other.


14/31


15/31

INTERNET PROTOCOL SUITE

a model architecture that dividesmethods into layered system of protocols.

Also known as TCP/IP named from two ofthe most important protocols in it: theTransmission Control Protocol (TCP) and

the Internet Protocol (IP).


16/31



17/31


APPLICATION LAYER

- the space for the application-specificnetworking methods used in software

applications.


18/31


TRANSPORT LAYER

- connects applications on different hostsvia the network with appropriate data

exchange methods.


19/31


INTERNET LAYER

- enables computers to identify and locateeach other via Internet Protocol (IP)

addresses, and allows them to connect toone-another via intermediate (transit)networks.


20/31

INTERNET LAYER

INTERNET PROTOCOL ADDRESS

(IP address)

- numerical label assigned to each deviceparticipating in a computer network that uses theInternet Protocol for communication.

- binary numbers but they are usually stored in

text files and displayed in human-readablenotations.


21/31

INTERNET PROTOCOL ADDRESS

Ex.

172.16.254.1 (for IPv4)

2001:db8:0:1234:0:567:8:1 (for IPv6)


22/31

INTERNET LAYER

DOMAIN NAME SYSTEM

- naming system built on a distributed database

for computers, services, or any resourceconnected to the Internet or a private network.

- it translate domain names meaningful to humaninto the numerical identifiers associated with

networking equipment for the purpose of locatingand addressing these device worldwide.


23/31

DOMAIN NAME SYSTEM

Ex.

www.example.com

192.0.32.10 (IPv4)

2620:0:2d0:200::10 (IPv6)
http://www.example.com/http://www.example.com/


24/31


LINK LAYER

- lowest layer in the Internet Protocol

Suite

- transfers data between adjacent networknodes in a wide area network or between

nodes on the same local area networksegment.


25/31

LINK LAYER


26/31

OPEN SYSTEMS INTERCONNECTION

(OSI)

Is an effortto standardize networking thatwas started in 1977 by the InternationalOrganization for Standardization (ISO),along with the Telecommunication

Standardization Sector (ITU-T).
http://en.wikipedia.org/wiki/Standardizationhttp://en.wikipedia.org/wiki/Standardization


27/31


28/31


29/31

DATA LINK LAYER

LOGICAL LINK CONTROL (LLC)

- specifies which mechanisms are to be

used for addressing stations over thetransmission medium and for controllingthe data exchanged between theoriginator and recipient machine.


30/31

DATA LINK LAYER

MEDIA ACCESS CONTROL (MAC)

- determines who is allowed to access the

media at any one time.- determines where one frame of dataends and the next one starts Frame

Synchronization.


31/31

Internet Communication System[1][1]

Documents

Transcript of Internet Communication System[1][1]