[問題]幾個題目 討論看看
討論一下吧 我也不知道答案 麻煩高手解說^^
In asynchronous transmission, the gap time between byte is _____
a. Fixed
b. Variable
c. A function of the data rate
d. zero
If odd parity is uesd for ASCII error detection, the number
of 0s per 8-bit symbol is_____
a. Even
b. Odd
c. indeterminate
d. 42
Flow control is need to prevent _____
a. Bit errors
b. Overflow of the sender buffer
c. Overflow of the receiver buffer
d. Collision between sender and receiver
When a primary device asks a secondary device if it has
data to send, this is called____
a. Polling
b. Selecting
c. Reserving
d. Backing off
一次問這麼多 辛苦大家的眼睛了 麻煩了^^
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