QUESTION 28
What is the difference between a CSU/DSU and a modem?
A. A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals
from a router to a leased line.
B. A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals
from a router to a leased line.
C. A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals
from a router to a phone line.
D. A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals
from a router to a phone line.
csu/dsu和modem的区别是什么啊。还有这句话怎么翻译的？
发表于 2011-10-14 15:39:57
置顶卡
喧嚣卡
变色卡
千斤顶
发表于 2011-10-14 16:40:41
