2. 计算机
  3. A typical application of this(71)is ADSL. It is emerging as the technology for home-and small-office Internet connectivity. It p

A typical application of this(71)is ADSL. It is emerging as the technology for home-and small-office Internet connectivity. It p

admin2009-02-15  41
问题 A typical application of this(71)is ADSL. It is emerging as the technology for home-and small-office Internet connectivity. It provides either 1.5 Mb/s～8 Mb/s from the network to the user and 64 kb/s～512 kb/s in the reverse direction depending on the distance, 12000 or 18000 feet. The different speed for each direction gives it the(72)label. ADSL is designed to take advantage of the fact that video-on demand, telecommuting, and Internet access traffic are inherently asymmetrical. The user(73)a brief message up to the network and receives a ton of data coming back, either a movie or a piece of data download. Under such a scenario, low-speed traffic to the network is just fine. ADSL .delivers high(74)where you need it and only uses a single copper pair. Through multiplexing, it also reserves(75)of the bandwidth for POTS.
选项 A、asymmetric
B、compressed
C、irregularity
D、symmetric
答案A
解析
转载请注明原文地址:https://kaotiyun.com/show/YBJZ777K
本试题收录于： 网络工程师上午基础知识考试题库软考中级分类
0

网络工程师上午基础知识考试

软考中级

相关试题推荐
随机试题
最新回复(0)