Osi Model Questions
The process of data transmission through the OSI Model layers involves the following steps:
1. Application Layer: The data is generated or received by an application. It is then formatted and prepared for transmission.
2. Presentation Layer: The data from the application layer is transformed into a standard format that can be understood by both the sender and receiver. This layer handles tasks such as data encryption, compression, and data conversion.
3. Session Layer: This layer establishes, manages, and terminates communication sessions between the sender and receiver. It ensures that the data is transmitted in an orderly manner and handles tasks such as session synchronization and checkpointing.
4. Transport Layer: The data is divided into smaller segments or packets for efficient transmission. This layer ensures reliable and error-free delivery of these segments by providing mechanisms such as flow control, error detection, and retransmission.
5. Network Layer: The packets are encapsulated with network layer headers, including source and destination IP addresses. This layer is responsible for routing the packets across different networks, making decisions on the best path to reach the destination.
6. Data Link Layer: The packets are further divided into frames and encapsulated with data link layer headers and trailers. This layer handles tasks such as error detection and correction, flow control, and access to the physical medium.
7. Physical Layer: The frames are converted into electrical, optical, or radio signals for transmission over the physical medium. This layer defines the physical characteristics of the transmission medium, such as voltage levels, cable types, and modulation techniques.
At the receiving end, the process is reversed, with each layer of the OSI Model receiving and processing the data until it reaches the application layer of the receiving device.