In the following essay, each blank has four choices. Choose the best answer and write down on the answer sheet.A Web browser is simply a terminal emulator, designed to display text on a screen. The two essential differences between an ordinary terminal emulator and a Web browser are that the browser knows how to deal with (1) , and that it has a mechanism for (2) graphical files. Display text, display graphics, and (3) hyperlinks ——there’s 99 percent of the (4) value. That’s not to say that the manufacturers didn’t go all - out to attach a hyperactive efflorescence of useless capabilities onto their browsers. Remember when media channels in the browser were a big deal, instead of the clutter you can’t wait to delete from your favorites of bookmarks menu Remember when client -side Java applets were supposed to become the preferred (5) , for application development Remember frames and all their nasty side effects 1()
A. superlinks
B. links
C. hyperlinks
D. connections
对照ISO/OSI参考模型各个层中的网络安全服务,在传输层主要解决进程到进程间的加密,最常见的传输层安全技术有 (1) ;为了将低层安全服务进行抽象和屏蔽,最有效的一类做法是可以在传输层和应用层之间建立中间件层次实现通用的安全服务功能,通过定义统一的安全服务接口向应用层提供 (2) 安全服务。在数据链路层,可以采用 (3) 进行链路加密;在网络层可以采用 (4) 来处理信息内外网络边界流动和建立透明的安全加密信道;在物理层可以采用 (5) 加强通信线路的安全。 1()
A. SET
B. SSL
C. S-HTTP
D. 数据通信方式
I/O系统主要有三种方式来与主机交换数据,其中主要用软件方法来实现,CPU的效率低的是 (1) ;要有硬件和软件两部分来实现,它利用专门的电路向CPU中的控制器发出 I/O服务请求,控制器则 (2) 转入执行相应的服务程序的是 (3) ;主要由硬件来实现,此时高速外设和内存之间进行数据交换 (4) 的是 (5) 。供选择的答案 3()
A. DMA方式
B. 批处理方式
C. 中断方式
D. 数据通信方式
Passage OneQuestions 26 to 28 are based on the passage you have just heard.
A. People’s interest in how languages began.
B. Languages today and past.
C. The important language families.
D. The English language in constant change.