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问题 填空题

目前，规模最大、用户最多的互联网络是______，它是集各类信息资源为一体的数据资源网。

答案

参考答案：Internet

解析：Internet的中文名称叫“因特网”。

选择题
下列哪一项不是电视艺术与电影艺术的共同点（   ）
A．科技革命的产物
B．让人感受到视觉、听觉的冲击和心灵的启迪
C．充分满足观众的娱乐、资讯等各种日常生活需求
D．满足人们不同层次的审美需要和精神追求
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单项选择题

Let us now see how randomization is done when a collision occurs. After a ______, time is divided into discrete slots whose length is equal to the worst-case round-trip propagation time on the ether (2t). To accommodate the longest path allowed by Ethernet, the slot tome has been set t0 512 bit times, or 51.2μsec.

A.rest B.random C.once D.odds

After the first collision, each station waits either 0 or 1 ______ times before trying again. If two stations collide and each one picks the same random number, they will collide again. After the second collision, each one picks either 0, 1, 2, or3 at random and waits that number of slot times. If a third collision occurs (the probability of this happening is 0.25), then the next time the number of slots to wait is chosen at ______ from the interval 0 to 23-1.
In general, after i collisions, a random number between 0 and 2i-1 is chosen, and that number of slots is skipped. However, after ten collisions have been reached, the randomization ______ is frozen at a maximum of 1023 slots. After 16 collisions, the controller throws in the towel and reports failure back to the computer. Further recovery is up to ______ layers.
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