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The transport layer is one of the key layers in the OSI (Open Systems Interconnection) model and the TCP/IP model, which are frameworks for understanding and implementing networking protocols on the basis of TCP or UDP. Its primary role is to facilitate communication between devices across a network. Here’s main functions: 1. End-to-End Communication 2. … Read more
The Session layer is the fifth layer in the OSI (Open Systems Interconnection) model. It plays a crucial role in managing and controlling the dialog between two computers, establishing, maintaining, and terminating communication sessions. The tasks performed are: 1.Session Establishment, Maintenance, and Termination 2.Synchronization 3.Dialog Control 4.Session Recovery 5.Authentication, Authorization, and Accounting (AAA) What is … Read more
The Presentation layer is responsible for the translation of data between the application layer and the network. This layer ensures that the data sent by the application layer of one system can be read by the application layer of another system. Data Translation – Converts data from the application layer into a format that can … Read more
The Application Layer is the topmost layer in the OSI (Open Systems Interconnection) model and is responsible for providing network services directly to end-users or applications. It serves as the interface between the user’s software and the network infrastructure. Some commonly used protocols operate at the Application Layer: HTTP (Hypertext Transfer Protocol): Used for transferring … Read more
What is OSI Model? The OSI (Open Systems Interconnection) model is a conceptual framework used to understand and standardize the functions of a telecommunication or networking system. Some Important Points about OSI Model: – Developed by ISO (International Organization for Standardization. – It divides the communication process into seven distinct layers. – OSI Model is … Read more
Welcome to CCNA Notes Hub – your one-stop destination for high-quality, exam-ready notes for Cisco Certified Network Associate (CCNA) certification. We know how challenging it can be to prepare for networking exams, and that’s why we’re here to make your journey easier, faster, and more effective. Our notes are curated by certified professionals who have … Read more
