RISC technology increases CPU speed by reducing its instruction set 请问这句话哪边有错误呢? TCP/IP is the universal standard for connecting in the internet 这句话是否正确呢?? 13.The place that is used to store most recently or most frequently accessed data so as to increase I/O speed is called （A）buffer （B）register （C）flash （D）cache （E）cash. 这题是不是cache阿 答案给register 我总觉得怪怪的 23.Which of the following about modems is wrong？ （A）modem converts analog into digital and then transmit it over telephone lines （B）today’s technology allows 56Kbps transmission rate （C）in the pervious item, bps stands for bit-per-second （D）modem is short for modulate-demodulate （E）all of the above are correct 这题的答案应该是A吧??我认为应该是 Digital to analog 答案是给E 29.A Web site designed to offer a variety of Internet services, including a search engine. news.sports, weather, stock quotes, and reference information, so that people can set the site as their first stop to the Internet, is called a （A）gateway （B）yellow page （C）white page （D）portal （E）ISP 这题是D吗? 不是很确定 答案给E......... 30.A technology that uses the public Internet backbone as a channel for private data communication is （A）ISDN （B）PPTP （C）VPN（ D）DSL （E）cable modem. 答案是不是C阿 还有请问B是什麽东东^^??还是乱掰的字眼 42.Which of the following is not one of the important advantages of a database？ （A）space saver （B）increased accuracy （C）less need for security measures （D）share of data （E）time saver due to search abilities. 可以解释一下C跟E选项吗?还有答案是给E 高手们请指教解惑^^ 感谢 --

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