VPN的含义是( )。
本题考查计算机系统的基础知识。VPN(Virtual Private Network,虚拟专用网)是指利用公共网络,如公共分组交换网、帧中继网、ISDN或Internet等的一部分来发送专用信息,形成逻辑上的专用网络:增值网英文为V alue Added Network,是在公共网络上租用模拟或数字专线组成专用网络的一种技术;企业内部网Intranet强调企业内部各部门的联系,业务范围仅限于企业内;企业外部网Extranet强调各企业间联系,业务范围包括贸易伙伴、合作对象、零售商、消费者和认证机构。
( )is the process of transforming information so it is unintelligible to anyone but the intended recipient.
As each application module is completed,it undergoes( )to ensure that it operates correctly and reliably.
( )algorithm specifies the way to arrange data in a particular order.
After analyzing the source code,( )generates machine instructions that will carry out the meaning of the program at a later time.
( )can help organizations to better understand the information contained within the data and will also help identify the data that is most important to the business and future business decisions.
浏览器开启无痕浏览模式后,( )依然会被保存下来。
下列协议中,不属于TCP/IP协议簇的是( )。
下列传输介质中,带宽最宽、抗干扰能力最强的是( )。
数控编程常需要用参数来描述需要加工的零件的图形。在平面坐标系内,确定一个点需要2个独立的参数,确定一个正方形需要( )个独立的参数。
某书的页码为1,2,3,...,共用数字900个(一个多位数页码包含多个数字),据此可以推断,该书最大的页码为( )。