3.1.3 - Describe how communication over networks is broken down into different layers. Flashcards
How is communication over networks broken down into layers?
Communication over networks is broken down into seven layers, each responsible for a specific function in the transmission of data across a network.
What is the Application layer in network communication?
The Application layer provides interfaces for user applications to access network services, such as email, file transfer, and web browsing.
What is the Presentation layer responsible for?
The Presentation layer handles data representation, translation, encryption, and compression to ensure data exchanged between applications is in a format understood by both sender and receiver.
What is the Session layer’s role?
The Session layer establishes, manages, and terminates communication sessions between applications, ensuring reliable data exchange.
What does the Transport layer do?
The Transport layer ensures end-to-end communication between devices, providing error detection, recovery, and reliable data delivery.
What is the role of the Network layer?
The Network layer is responsible for routing and forwarding data packets between networks, handling addressing, and determining the optimal path for data transmission.
What is the function of the Data Link layer?
The Data Link layer provides error detection and correction, data framing, and flow control to ensure reliable communication over the physical medium.
What is the Physical layer responsible for?
The Physical layer deals with the transmission and reception of raw data bits over a physical medium, such as cables or wireless signals.
