OSI model in Hindi, CCNA in Hindi

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OSI (Open Systems Interconnection) Model
, इस tutorial OSI model OSI
model स स झ स स data ए network स स network
OSI model स suggest
Networks इस ए CCNA in Hindi : Networks
स
Outline
 Introduction to OSI model in Hindi
 Layers of OSI model in Hindi
Introduction to OSI (Open Systems Interconnection)
model
OSI model ISO (International Organization for Standardization) 1984
ए reference model , इस real life
Real life इस base TCP/IP (Transmission control
protocol/ Internet Protocol ) model
OSI model data journey स झ ए OSI model
स स झ स data स ए network स स network
औ इस स processing
OSI model 7 layers स स layers स
processing , औ data स फ स layer processing
स layer data अ अ स

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layers फ sender फ औ receiver फ औ
layers descending order layer स स औ
layer स स इ इ layers स

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Layers of OSI model
Application Layer
Application layer ए औ इ स इ
स ए (Internet explorer, Mozilla fire-fox, chrome)
इ (Outlook, Thunderbird). स applications network
ए इ स provide
application ए protocol
operations control ए स interact औ application
network स interact स web address open
Application layer स protocol स ए
 HTTP (Hyper text transfer protocol)
 FTP (File Transfer Protocol)
 POP 3 (Post Office Protocol)
 SMTP (Simple mail transfer protocol)
 Telnet
स protocols network स interact ए Application
layer tasks perform ए
1. Communicate partners application layer
2. Data availability track
3. Communication synchronize
4. Basic email स स इ
5. File transfer

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Presentation layer
Presentation layer OSI model 6th layer layer data presentation
ए responsible layer verify data sender
receiver side स झ इस ए receiver औ sender data
standards follow ए -
Data standards
 Text - RTF, ASCII
 Images - JPG, GIF
 Audio - MP3, WAV
 Movies - AVI, MPEG
common data standards side agree ए
sender image JPG format ए receiver स
स
layer data formatting इस layer स data स application layer
, show इस ए स presentation layer
data स present
sender औ receiver ए format support presentation layer
translation औ conversion services इ
Presentation layer functions ए
 Presentation layer translate
 Presentation layer data encrypt
 Presentation layer data compress

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Session layer
Session layer OSI model 5th layer layer sender औ receiver
session establish , स session maintain data
transfer औ data transfer स session terminate
session break इस layer स recover ability
layer data synchronization ए responsible
 layer session establish
 layer session maintain
 session terminate
Transport layer
Transport layer OSI model 4th layer layer data reliable transfer
ए responsible Data order औ error free इस layer
Transport layer 2 स communicate connection-less
औ connection oriented
Connection-less communication ए UDP औ connection orientated ए
TCP/IP protocols Connection less communication fast
error free औ स स guarantee
Connection oriented communication data error free औ स
guarantee communication services इ -

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 Segmentation - Data स segments convert
 Sequencing - segment ए sequence number
 Connection establishment - Data स sender औ receiver
connection establish
 Acknowledgment - segment स acknowledgment
इ number segment स
 Flow control - Data transfer rate confirm
Network layer
Network layer OSI model 3rd layer layer network communication
ए responsible Network layer data packets convert
Network layer 2 ए
 Logical addressing - Network layer network travel ए IP
address provide IP address destination ए
responsible
 Routing - Data ए network स स network network layer
Network layer IP (Internet Protocol)
Data link layer
Data link layer OSI model 2nd layer layer network अ data
transport ए responsible Data link layer 2 sub layers

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 Logical link control - LLC sub-layer physical layer औ layers
ए link establish
 Media access control - MAC sub layer physical medium access control
Data link layer data frames Data link layer
frames convert data स physical medium through
स process framing
Frames source औ destination devices hardware address contain स
network host uniquely identify ए hardware address
स स common hardware address Ethernet MAC address
Physical layer
Physical layer OSI model 1st layer इस layer data bits convert
इस layer physical mediums transfer स
Cables. OSI model ए स layer physically 2
communication establish
Physical layer devices NIC cards औ different cables
Physical layer functions ए -
 Data rate - layer data rate define , स ए second
bits transfer
 Synchronization - layer sender औ receiver bit level synchronize
 Signals - layer bits signals convert

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इस tutorial OSI model इस CCNA in
Hindi : Ethernet technologies स
For more tutorials on CCNA in Hindi visit www.besthinditutorials.com