OSI Model

OSI Layers Layer 7 - Application layer Provide network service to the end host's application. ¬†Eg: Email, FTP, Telnet. Layer 6 - Presentation layer Ensure that data can be understood between two end hosts. Eg: ASCII character encoding. Layer 5 - Session layer Manages session between end hosts. Eg: Web server tracking its open connections…

Networking Devices

Basic networking devices: SwitchesRouters Switches: Switches are used to connect endpoint to LAN (Local Area Network) Types of switches: AccessDistribution / AggregationCore Routers: Connects multiple local area networks.Choose the best path between LAN and WAN (Wide Area Network) Type of routers: Branch - Lower end for SOHO or remote office connections.WAN / Enterprise edge -…