OSI Model: Understanding the Application and Presentation Layer with Er. Manmohan Sir
OSI Model: Understanding the Layers with Er. Manmohan Sir
The Open Systems Interconnection (OSI) Model is a conceptual framework used in the field of computer networking to explain the communication process between different devices. The OSI model is made up of seven layers, each responsible for a specific aspect of the communication process. Understanding the OSI model is critical for anyone looking to develop a career in the field of computer networking. In this article, we will explore the OSI model in-depth and discuss the importance of learning about it.
To help us understand the OSI model, we will take the assistance of Er. Manmohan Sir, who is an expert in the field of computer networking. Er. Manmohan Sir is a renowned teacher who has been helping students to achieve their career goals for many years. His live classes on the OSI model have been highly beneficial to students, and his teaching style is praised for being easy to understand and follow.
Er. Manmohan Sir begins his classes on the OSI model by introducing the concept of layered architecture. He explains how the OSI model consists of seven layers, each with a specific purpose, and how the model provides a framework for communication between different devices.
The first layer in the OSI model is the Physical layer. Er. Manmohan Sir explains how this layer is responsible for the physical transmission of data and how it defines the physical specifications of the network, such as the cables, connectors, and signaling.
The second layer is the Data Link layer, where Er. Manmohan Sir explains how the layer is responsible for the reliable transmission of data between adjacent network nodes. He also explains the concept of flow control and error correction at this layer.
The third layer is the Network layer, where Er. Manmohan Sir explains how this layer is responsible for the logical addressing and routing of data packets between different networks. He also talks about the concept of subnets and how they help in efficient routing of data packets.
The fourth layer is the Transport layer, where Er. Manmohan Sir explains how this layer is responsible for providing reliable end-to-end data transfer services. He also discusses the concept of TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) at this layer.
The fifth layer is the Session layer, where Er. Manmohan Sir explains how this layer is responsible for establishing, managing, and terminating sessions between applications. He also talks about the concept of synchronization and how it is achieved at this layer.
The sixth layer is the Presentation layer, where Er. Manmohan Sir explains how this layer is responsible for the representation of data in a format that is understandable by the receiving device. He talks about the various encoding and decoding techniques used at this layer.
The seventh layer is the Application layer, where Er. Manmohan Sir explains how this layer is responsible for providing services to the end-users. He talks about the various application layer protocols such as HTTP, FTP, SMTP, etc.
Er. Manmohan Sir’s live classes on the OSI model have been highly beneficial to students looking to develop a career in computer networking. His teaching style is praised for being easy to understand and follow, and he ensures that all the doubts of his students are cleared. By attending his live classes, students get an in-depth understanding of the OSI model, and they are better equipped to handle real-world networking problems.
In conclusion, the OSI model is a critical concept in the field of computer networking. Understanding the seven layers of the OSI model is crucial for anyone looking to develop a career in this field. Er. Manmohan Sir’s live classes on the OSI model are highly recommended for anyone looking to gain a comprehensive understanding of this concept.
