ATM 适配层(AAL)分为两个子层:会聚子层和拆装子层。拆装子层把上层的数据 分装

题型:单项选择题

问题:

ATM 适配层(AAL)分为两个子层:会聚子层和拆装子层。拆装子层把上层的数据 分装到 ATM 有效载荷,载荷的大小是______。

A.53 字节

B.1500 字节

C.8 字节

D.48 字节

考点:计算机等级考试网络技术全国计算机等级考试三级网络技术真题2005年4月
题型:单项选择题
阅读填空。
A. summer  B. cold  C. hours  D. all  E. winter  F. And
G. wait  H. But  I. talk  J. hope  K. about  L. paces
     In our country different 1______ have different weather. In Heilongjiang, the weather is always very
2______ in winter and hot in summer. 3______ in Hainan island (岛), the weather is very warm in winter
and also very hot in 4______. Kunming is a spring city (春城). The weather is warm 5______ the time.
     In London, the weather changes very often. You can see a sunny day in the morning, and then a rainy or
a cloudy day one or two 6______ later. People often talk 7______ the weather in London. They often 8______
to you,"If you don't like the weather, it doesn't matter. You can just 9______! It will change in a minute."
    Now people can do many things about weather. It's called man-made (人造的) weather. We 10______ one
day we can decide (决定) the weather.
题型:单项选择题

2011年10月,在南宁举办了“两会一节”活动,你作为南宁的一个成员,你认为应该怎样做一名友好往来的使者?

________________________________________________________________________________

题型:单项选择题

根据实际情况,在下列空白处填上适当的单位:

(1)学校教学楼每层楼高为 35______;

(2)一中学生跑完100米的时间约为 14______;

(3)小汽车正常行驶的速度约为 80______.

题型:单项选择题

运算器的主要功能是进行( )。

A.算术运算

B.逻辑运算

C.加法运算

D.算术和逻辑运算

题型:单项选择题

计量检定室相对湿度应控制在()。

A.30~40%

B.50~60%

C.60~70%

D.70~80%

更多题库