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      Question

      Router is responsible for packet forwarding, including

      routing. Router works at which layer? 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 Presentation 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

      Here at the Network Layer is where you’ll find most of the router functionality that most networking professionals care about and love. In its most basic sense, this layer is responsible for packet forwarding, including routing through different routers. You might know that your Boston computer wants to connect to a server in California, but there are millions of different paths to take. Routers at this layer help do this efficiently.

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