皮皮学，免费搜题
登录
搜题
【多选题】
某局域网运行了2年时间(17,520小时),因设备故障而停用了8个小时。后来网络扩建,加入新的设备后,又运行了1年的时间(8,760小时),因软件故障又停用了3个小时。则关于此网络的可用性(Availabilit),下列哪些说法是正确的?A.
网络扩建后的可用性比扩建前要好
B.
网络扩建后的可用性比扩建前要差
C.
扩建前，网络可用性是99.97%
D.
从网络开始运行到现在，其可用性是99.96%
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】When I was19 years old, I had a part-time job in a hospital. At that time I was shy and didn’t believe in myself. I talked with others. I wasn’t confident in any future. Later I met a doctor, Mike, an...
【简答题】When I was in the ninth grade, my parents started fighting. I could hear them 36 at each other at night. It always seemed like they were fighting about me. I started to 37 and couldn’t fall asleep. So...
【简答题】For many of us, a little time with our smartphones or iPads before sleep is the highlight of the night. But would you still think it is relaxing if you knew that it damages or destroys your sleep? Sci...
【简答题】根据下列句子及所给单词的首字母，在答题卷上按题号写出各单词的完全形式（每空限填一词）。 小题1:Tom and Jane came to China two weeks ago, and they r______ to America yesterday. 小题2:A______ comes after summer. The weather will get cool and leaves wi...
【简答题】完形填空（共20小题；每小题1．5分，满分30分） 阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）选出可以填入空白的最佳选项，并在答题卡上将该项涂黑。 When I was fif, I announced to my English class that I was going to write my own books. Half the students smiled u...
【简答题】不属于特殊外形的表现是
【单选题】The secrets of sleep were a mystery for centuries simply because there was neither the means(51)them, nor the need. Only when candles gave way(52)gaslight, and gas to electricity, when man became able...
A.
investigate
B.
to investigate
C.
explore
D.
to explore
相关题目：