Computer Networks

Physical addressing, or MAC addressing, is performed at the data link layer (Layer 2) to ensure data reaches the correct hardware device on a local segment.

Layer 6 of the OSI model is the presentation layer, which handles data formatting, compression, and encryption.

The network layer is the third layer of the OSI model, responsible for logical addressing and routing.

SMTP is an application layer protocol used for email transmission. ARP is a data link layer protocol, and RIP is a network layer protocol.

The OSI model consists of seven layers, with the Physical layer being the first layer. It is responsible for the transmission and reception of raw bit streams over a physical medium.

The OSI (Open Systems Interconnection) model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven distinct layers.

The Network layer (Layer 3) is responsible for logical addressing and routing, which determines the best path for data packets to travel across interconnected networks.

The TCP/IP model is a simplified version of the OSI model. While the models differ in structure, the Transport layer exists in both, providing end-to-end communication services.

The standard TCP/IP model consists of four layers: Network Access, Internet, Transport, and Application.

The Presentation layer (Layer 6) is responsible for data translation, compression, and encryption/decryption to ensure that the application layer can read the data.

The Session layer (Layer 5) manages, establishes, maintains, and terminates connections (sessions) between applications on different devices.

UDP (User Datagram Protocol) is a connectionless protocol that prioritizes speed over reliability, making it ideal for real-time applications like video streaming.

The Session layer is responsible for creating, managing, and terminating sessions between two communicating hosts.

HTTP, FTP, and RDC are protocols that interact directly with user software, placing them in the Application layer (Layer 7).

The Transport layer (Layer 4) is responsible for end-to-end error recovery and flow control, ensuring that data is delivered reliably and in the correct order.