The OSI model

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The OSI model what is the OSI model and why is it important in understanding network - ✔✔*OSI model is a concept way that is broken down into segments that discuss the complex process of sending... data over the network. *understanding the model is important because its a widely used model that talks about network communication. what are the advantages of using a theoretical model to describe networking ? - ✔✔* it give a common language and reference point for network professionals. * It divides networking task into logical layers that are easy to understand. * has different features at different levels * Easier to troubleshooting *promotes standards of interoperability (healthcare) networks and devices what is the name Of layer 3 in the OSI model ? layer 5? - ✔✔*Layer 3 is called Network * Layer 5 is called Session which Osl model layers typically correspond to the network architecture? - ✔✔The physical Layer How does the session ID differ from the port number ? - ✔✔*Session ID keep data streams separate. * Port numbers identifies the process of where a network message should be forwarded on a server. At which OSI model layer would YOU find a frame? - ✔✔Data link layer (2) what is the difference between connectionless and Connection-oriented services? - ✔✔Difference between Connection oriented service and Connectionless service 1.In connection oriented service authentication is needed while connectionless service does not need any authentication. 2.Connection oriented protocol makes a connection and checks whether message is received or not and sends again if an error occurs connectionless service protocol does not guarantees a delivery. 3.Connection oriented service is more reliable than connectionless service. 4.Connection oriented service interface is stream based and connectionless is message based. Limitation of OSI Model - ✔✔* The layer models are a concept and don't actually perform functions *some function do not spread across to other layers * industry rarely have correspondence with the layers 7. Application 6. Presentation 5. Session 4. Transport 3. Network 2. Data link 1. Physical - ✔✔1. Physical 2. Data Link 3. Network 4.Transport 5.Session 6. Presentation 7.Application Application (layer 7) - ✔✔combines network functionality into the host(device) OS and enable network services. Presentation(Layer 6) - ✔✔formats data into compatible form for receiving by the application layer or the destination center * This layer ensures formatting and translation of data between systems * converting character sets to the correct format * Enclose data into a message envelope by encry [Show More]

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