Data Communication Ek Esa Process Hai Jisme Digital Data Ka
Transmission Hota Hai Ek Device Se Dusre Device Me.Data Pathway Ke Madhyam Se
Transfer Hota Hai Jisse Communication Channel Kaha Jata Hai
Data Communication Advantages-
Ye Modern Computer Ki Power Or Storage Ko Fully Utilize
Karta Hai.
Duplicate Files Ko Eliminate Karta Hai
Data Transmission Ki Cost Ko Reduce Karta Hai
Time Save Karti Hai Data Ke Prepration Me
Communication Channel –
Inme Ek Traf Transmitter(Source) Hota Hai Or Dusri
Traf Reciver(Destination). Source Hmesha He Single(Ek) Hota Hai Par
Destination(Recivers) Multiple Ho Sakte Hai
Communication Channel 3 Trah Ke Hote Hai-
Simplex-Yanha
Communication Unidirectional Hote Hai(Unidirectional Means-Do Device Me Se Sirf
Ek He Device Data Transmit Kar Sakta Hai Aur Dusra Device Recive Kar Sakta Hai.
Example-Radio
Broadcasting,Television Broadcasting
Half Duplex-
Ye Communication Bidirectional Hai(Yanha Dono Device
Transmitter Ya Reciver Ki Trah Act Karte Hai But Ek Time Me Sirf Ek
Device Data Transmit Kar Sakta Hai
Example-Walkie Talkie
Full Duplex-
Yanha Communication Dono Direction Me Hoti Hai Dono Device
Ek Sath Data Ko Transmit Kar Sakte Hai
Example-Telephone
Lines
Data Communication Channels-
· Standard
Telephone Lines
· Coaxial
Cables
· Microwave
Transmission
· Satellite
Communication
· Fiber
Optics
Network-
Computer Network Ek Group Hota Hai Computers Ka
Jisme Computer Ek Dusre Se Connected(Jude) Hote Hai Communication
Purpose Ke Liye
“Simple Bhasha Me Ham Keh Sakte Hai Ki Computer Ka
Group Ek Dusre Se Communicate Karne Ke Liye Apas Me Jude Hote Hai Jise Network
Kaha Jata Hai”
Network Ka Use Kyu Kiya Jata Hai-
· Communication-Network
Ka Use Karke Ham Logo Se Communicate Kar Sakte Hai By Using
Email,Video Conferencing,Chat Room Etc .Ye Sbhi Task Ham Network Ki Help Se He
Kar Pate Hai
· Sharing
Hardware-Laser Printer Iska Sabse Acha Example Hai Means Jese Kai Computer
Sirf Ek Laser Printer Se Connected Hai To Ham Kisi B Computer Se Print Commant
Deker Print Karwa Sakte Hai
· Sharing Files,Data Aur Information-Files,Info,Video ,Images Etc Ye Sbhi Files Ham Network Ke
Karan He Share Kar Pate Hai
· Sharing Software- Hm
Software Ko B Share Kar Pate Hai Network Ke Karan.Apne Teamviewer Software Ke
Bare Me Sunna Hoga Jiska Use Karke Ham Team Me Kam Kar Sakte Hai
Different Trah Ke Computer Networks-
Lacal Area Network
· Lan-Local
Area Network
· Range-1km(Building)
· Media-Guided
Media
· Connecting
Device-Hub,Switch
· Speed-High
Speed
· Location-Home,Offices,Group
Of Buildings
· Error
Rates-Lowest
· Setup
Cost-Very Cheap(Bhut Kam)
Type Of Lan-
· Star Lan
· Right Lan
· Bus Lan
Metropolitan Area Network
· Man-
Metropolitan Area Network
· Range-50km
· Media-Guided
As Well Unguided
· Connecting
Devices-Modem &Amp; Router
· Speed-Moderate
· Location-Single
City
· Error
Rates-Moderate
· Setup
Cost-Very Moderate(Medium)
Wide Area Network
· Wan-Wide
Area Network
· Range 50 Km
Se Jyada
· Media-Unguided
Media
· Connecting
Devices-Radio And Microwaves
· Speed –Low
· Location-Ek
Country Ya Pura World
· Error
Rates-Highest
· Setup
Cost-Very Costly(High)
Type Of Wan-
· Pstn(Public Switched
Telephone Networks)
· Value Added
Network(Van)
· Integrated
Services Digital Network(Isdn)
Pan(Personal Area Network)-Ye
Ek Chota Sa Network Hai Jiska Use Home Ya Office Purpose Ke Liye Kiya Jata Hai
.Iski Range Bhut He Kam Hai Only 10 Miters
Examples-Bluetooth,Tv Remotes Etc
Can-(Campus Area Network)-Iska
Use Geographical Area Me Kiya Jata Hai For Example Universities,Collages Campus
Etc.
Jesa Ki Aap Kisi Collage Me Dekhte Ho Ki Alag Alag Block
Hote Hai B.Tech ,Bcom,It Etc To Wanha Is Network Ka Use Kiya Jata Hai
Interconnectig Devices-
Ye 7 Trah Ke Hote Hai
· Repeaters
· Hub
· Bridge
· Routers
· Gateways
· Switch
· Modulation/Modem
Computer Network Layers-
· Presentation
Layer
· Session
Layer
· Transport
· Network
· Data Link
· Physical
Network Topologies-Ye
Computer Network Ke Different Element(Links,Nodes) Etc Ki
Arrangement Hoti Hai.
Ye Do Trah Ki Hoti Hai Physical And Logical Topology
Sabse Pehle Ham Bat Karte Hai
· Physical Topology Ki-
(Isme Server Location And Cable Installastion Ata Hai)
· Logical Topology-Isme Is
Bat Ka Pta Chalta Ha Ki Kis Trah Se Network Me Data Flow(Transmit) Ho Raha Hai
Types Of Logical Topology-
1) Bus
2) Star
3) Ring
4) Tree
5) Mesh
6) Hybrid
Me Ummid Karta Hu Ki Ye Post Apke Liye Bhut He Useful Hogi
To Dosto Apko Kese Lgi Ye Post Comment Me Jrrur
Btaiyega.
Thank You
Team Gajabwap Web In Hindi
Also Read-ComputerUser Ke Liye 13 Jrruri Softwares
My name is Bhupender Kashyap i am from chandigarh,here i give infomation about blogging,php,mobile tips,web hosting,wordpress and Gk
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