Question 40 (1 point) Listen In sliding windows, the sender picks a window size. True False Question 41 (1 point) Listen Fast Ethernet 100BASE-TX 1000BASE-T 1000BASE-TX 10GBASE-T Question 42 (1 point) Listen Ethernet was originally a 1 Mbps data rate protocol. True False
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Question 40 asks: "In sliding windows, the sender picks a window size." This statement refers to the sliding window protocol used in data link and transport layers. In this protocol, the sender and receiver agree on a window size, but it's typically the receiver Show more…
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Suppose the round-trip propagation delay for Ethernet is $46.4 \mu \mathrm{s}$. This yields a minimum packet size of 512 bits ( 464 bits corresponding to propagation delay $+$ 48 bits of jam signal). (a) What happens to the minimum packet size if the delay time is held constant, and the signalling rate rises to $100 \mathrm{Mbps}$ ? (b) What are the drawbacks to so large a minimum packet size? (c) If compatibility were not an issue, how might the specifications be written so as to permit a smaller minimum packet size?
Select the correct alternative from the given choices. An Ethernet LAN has the capability of $100 \mathrm{Mbps}$. If Manchester encoding is used, what is the rate of signal change? (A) 20 million times $/ \mathrm{sec}$ (B) 200 million times/sec (C) 50 million times $/ \mathrm{sec}$ (D) 500 million times $/ \mathrm{sec}$
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