Computer Network Layer- Concept of OSI Layer and tcp ip layer or tcp ip protocol.

Computer Network Layer- Concept of OSI Layer and tcp ip layer or tcp ip protocol.

https://www.gyanodhan.com/video/7B3.%20GATE%20CSEIT/Computer%20Network/693.%20OSI%20MODEL%20%20TCP%20IP-%20Computer%20Network%20Layer-%20Concept%20of%20osi%20Layer%20and%20tcp%20ip%20layer%20or%20tcp%20ip%20protocol.mp4

 Computer Network Layers – OSI Model & TCP/IP Model

Computer networks follow a structured model to enable communication between devices. The two main models used are:

• OSI Model (Open Systems Interconnection Model)

• TCP/IP Model (Transmission Control Protocol/Internet Protocol Model)

 OSI Model (7 Layers)

The OSI Model has 7 layers, each responsible for a specific function in data transmission.

 OSI Model Layers & Their Functions

 Easy Way to Remember OSI Layers (Top to Bottom)

“All People Seem To Need Data Processing”
(A = Application, P = Presentation, S = Session, T = Transport, N = Network, D = Data Link, P = Physical)

 TCP/IP Model (4 Layers)

The TCP/IP Model is a simpler model used in the real-world Internet. It has 4 layers:

 OSI vs TCP/IP Model

 TCP/IP Protocols (Used in Internet)

Key Differences Between OSI & TCP/IP Model

• OSI Model is conceptual, whereas TCP/IP is practical and used in the Internet.

• OSI has 7 layers, TCP/IP has only 4 layers.

• OSI model separates Presentation & Session layers, but TCP/IP combines them into the Application layer.

• TCP/IP follows a client-server model and is the foundation of modern networking.

 Conclusion

• OSI Model is used for learning and understanding network architecture.

• TCP/IP Model is used in real-world networking (Internet, websites, emails, etc.).

• Understanding TCP/IP protocols (like HTTP, TCP, IP, etc.) is crucial for network engineers, cybersecurity, and software developers.

 Do you want a practical example or a deeper explanation of any layer?

Computer Network Layer- Concept of OSI Layer and tcp ip layer or tcp ip protocol.

Data Encapsulation & OSI & TCP/IP Models Week 2

The OSI Model and the TCP/IP Protocol Suite

UNIT 2 OSI AND TCP/IP MODELS

Network Models OSI vs. TCP/IP

Chapter 2 Network Models

Here’s a clear and concise explanation of the OSI Model and TCP/IP Protocol Suite, fundamental to understanding Computer Networks:

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1. OSI Model (Open Systems Interconnection)

The OSI Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into 7 abstract layers. It helps different systems communicate using standard protocols.

7 Layers of the OSI Model (Top to Bottom)

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2. TCP/IP Model

The TCP/IP Model is the protocol suite used for the Internet and is more practical than the OSI model. It has 4 layers and is based on standard protocols.

4 Layers of the TCP/IP Model

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OSI vs TCP/IP

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TCP/IP Protocols in Use

• TCP (Transmission Control Protocol): Reliable connection, sequencing, and error recovery.

• IP (Internet Protocol): Routing and addressing across networks.

• UDP (User Datagram Protocol): Faster but unreliable data transmission.

• HTTP/HTTPS: Web browsing.

• FTP/SFTP: File transfer.

• DNS: Resolving domain names to IP addresses.

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Want a Visual Guide?

Here’s a helpful YouTube video that clearly explains the OSI and TCP/IP layers with animation and examples.

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Let me know if you want:

• OSI vs TCP/IP diagram

• Practice questions (MCQs)

• Real-world examples for each layer

I’d be happy to help!

Computer Network Layer- Concept of OSI Layer and tcp ip layer or tcp ip protocol.

The OSI Model and the TCP/IP Protocol Suite – BCA Notes