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      Question

      The _____________ deals with the coordination of the

      data transfer between end systems and hosts. Read the below passage and answer the questions The Open Systems Interconnect (OSI) model is a conceptual framework that describes networking or telecommunications systems as seven layers, each with its own function. The layers help network pros visualize what is going on within their networks and can help network managers narrow down problems (is it a physical issue or something with the application?), as well as computer programmers (when developing an application, which other layers does it need to work with?). Tech vendors selling new products will often refer to the OSI model to help customers understand which layer their products work with or whether it works “across the stack”. Every layer as set of responsibility  and encryption and decryption of data for secure transmission; this happens at ______________(16)
      A Transport Layer Correct Answer Incorrect Answer
      B Application layer Correct Answer Incorrect Answer
      C Session layer Correct Answer Incorrect Answer
      D Data Link layer Correct Answer Incorrect Answer
      E Network Layer Correct Answer Incorrect Answer

      Solution

      The Transport Layer deals with the coordination of the data transfer between end systems and hosts. How much data to send, at what rate, where it goes, etc. The best known example of the Transport Layer is the Transmission Control Protocol (TCP), which is built on top of the Internet Protocol (IP), commonly known as TCP/IP. TCP and UDP port numbers work at Layer 4, while IP addresses work at Layer 3, the Network Layer.

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