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Course 27453
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Suppose an Ethernet frame arrives to an Ethernet switch, and the Ethernet switch does not know which of its switch ports leads to the node with the given destination MAC address? In this case, what does the switch do?
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Consider the simple star-connected Ethernet LAN consist of one switch and 6 computers (A, B, C, D, E, and F) directly connected to the switch. Suppose the Ethernet switch is a learning switch, and that the switch table is initially empty. Suppose C sends an Ethernet frame address to F and F replies back to C. How many of these two frames are also received at B's interface?
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We've now learned about both IPv4 addresses and MAC addresses. Consider the address properties below, indicate which of these properties is a property of both IPv4 addresses and MAC addresses.
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Consider the following multiple access protocols that we've studied: (1) TDMA, and FDMA (2) CSMA (3) Aloha, and (4) polling. Which of these protocols are collision-free (e.g., collisions will never happen)?
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Which of the following statements are true about a self-learning switch?
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What does a switch do if the destination MAC address is unknown?
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At the router, what happens to the incoming Ethernet frame from host A?
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Why is the Ethernet preamble used?
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We've now learned about both IPv4 addresses and MAC addresses. Consider the address properties below, indicate which of these properties is only a property of MAC addresses (and therefore is not a property of IPv4 addresses - careful!).
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Which of the following statements is true about a two-dimensional parity check (2D-parity) computed over a payload?
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