E1线路是一种以时分多路复用技术为基础的传输技术,其有效数据速率(扣除开销后的数据率)约为()Mbps。
E1线路采用的时分多路复用方式,将一帧划分为32个时隙,其中30个时隙发送数据,2个时隙发送控制信息,每个时隙可发送8个数据位,要求每秒钟发送8000帧。El线路的数据率为2.048Mbps,每帧发送有效数据的时间只有30个时隙,因此有效数据率为(30/32)X 2.048Mbps=1.92Mbps。
( )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( )。