Re: [問題] TCP的題目問題
※ 引述《vickycute (小酷智)》之銘言：
: 想請教各位高手，有相TCP的問題...
: 這是作業，不過我解不太出來，嗚...
: 1. To make the initial sequence number a random number,
: most systems start the counter at 1 during bootstrap and increment the
: counter by 64,000 every half second.
: How long does it take for the counter to wrap around？
sequence number is 32-bit long, so the duration would be:
(2^32 / 64,000) * 0.5 ~= 33,554 sec
: 2. In a connection, the value of cwnd is 3000 and the value of rwnd is 5000.
: The host has sent 2000 bytes which have not been acknowledged.
: How many more bytes can be sent？
the total data allowed to be sent is min(cwnd, rwnd), so
min(3000, 5000) - 2000 = 1000 bytes
more data can be sent.
: 拜託，謝謝^^
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