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      Question

      In a bank’s LAN, which device primarily operates at

      the data link layer and is responsible for deciding to which port a frame should be forwarded based on MAC addresses?
      A Switch Correct Answer Incorrect Answer
      B Hub Correct Answer Incorrect Answer
      C Router Correct Answer Incorrect Answer
      D Gateway server Correct Answer Incorrect Answer
      E None of them Correct Answer Incorrect Answer

      Solution

       By using MAC address tables, a switch can send frames only where they are needed, reducing collisions and network congestion. This is especially important in a banking environment where many devices—such as staff PCs, IP phones, CCTV cameras, and ATMs—share the network. 

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