关于na考试模拟软件的一个问题 求助

doglike

这个是bug吗  还是修改了答案 解析没改
解析是bc   答案是ab

chaochao516

铁牛Leo

你说的这一道题，答案是ab,人工也会出错的，
就像题库里面的第28道。
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.
Answer: D
Section: Chapter 14: Wide Area Network (WAN)
CSU/DSU一般是专线，MODEN是将模拟信号与数字信号转换

明明说moden是将模拟信号与数字信号转换,却选了d,我觉第28道题的答案是c.
个人意见。

booso

夕夏o

skycki

樓主你應該選擇了那個打亂答案次序的那個吧........如果用了打亂次序的那個選項...就會出現這情況的....

aleser

doglike

skycki 发表于 2012-10-7 15:52
樓主你應該選擇了那個打亂答案次序的那個吧........如果用了打亂次序的那個選項...就會出現這情況的....

谢谢啦 我已经知道了

aleser