OSI Model Study Guide correctly answered 2023

OSI Model Study Guide correctly answered 2023OSI Layers in order Layer 1:Phsyical Layer 2:Data-link Layer 3:Network Layer 4:Transport Layer 5:Session Layer 6:Presentation Layer 7:Application Three protocols for Application Finger Gopher AFP Two Protocols for Presentation AFP ICA Two Protocols for Session ASP RPC Two Protocols for Transport TCP RDP Two Protocols for Network EGP RIP Two Protocols for Data-link ARP PPP Two Protocols for Physical N/A 3 Devices associated with the Physical layer Sockets/Connectors, Cable Modem 3 Devices associated with the Data-link layer Switches and Bridges 3 Devices associated with the Network layer Router, How is the OSI model related to the TCP-IP Model The internet application layer includes the OSI application layer, presentation layer and most of the session layer. End to end transport layer includes close function of the OSI session layer. Internet layer is a subset of the OSI network layer. Link lay includes OSI data link layer What are the layers of the TCPIP model? Application, Transport, Internet, Netowork Access Function of the Physical Layer Detects and accepts signals, passes them to the data link layer, sets data transmission rates, monitors data error rates Function of the Data-Link Layer This layer controls the flow of information. Function of the Network Layer Is a system for assigning unique identification numbers to network devices. Function of the Transport Layer This layer accepts data, establishes a connection before transmitting data, allows receiving node to check arriving data vs sent data, breaks large chunks of data up to transmit quicker, then reassembles the data to identify order of data issue. Function of the Session Layer The session layer is the connection for ongoing data exchange between two parties. (maintaining communications between to network nodes) EX. Connection between web browser client(node 1) and web server(node 2) Function of the Presentation Layer Accepts data from the application layer and processes the data to format it into something that can be presented. Function of the Application Layer Application interprets the data sent from the network which interprets the application request. (facilitating communication between software applications and lower layer network services) Request content -> return content in required format -> web browser collects and displays data What is a PDU? A protocol data unit (PDU) is an open-system interconnection (OSI) term used in telecommunications that refers to a group of information added or removed by a layer of the OSI model.