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OSI Model

Network Fundamentals / Ch. 2 - The TCP/IP and OSI Networking Models

QuestionAnswer
Application Layer Interfaces between network and application software. Also includes authentication services.
Presentation Layer Defines the format and organization of data. Includes encryption.
Session Layer Establishes and maintains end-to-end bidirectional flows between endpoints. Includes managing transaction flows.
Transport Layer Provides a variety of services between two host computers, including connection establishment and termination, flow control, error recovery, and segmentation of large data blocks into smaller parts for transmission.
Network Layer Logical addressing, routing, and path determination.
Data Link Layer Formats data into frames appropriate for transmission onto some physical medium. Defines rules for when the medium can be used. Defines means by which to recognize transmission errors.
Physical Layer Defines the electrical, optical, cabling, connectors, and procedural details required for transmitting bits, represented as some form of energy passing over a physical medium.
Created by: k3ntucky