UTP双绞指的是( )双绞线。
双绞线分为屏蔽双绞线(Shielded Twisted Pair,STP)与非屏蔽双绞线(Unshielded Twisted Pair,UTP)。非屏蔽双绞线(Unshielded Twisted Pair,UTP)是一种数据传输线,由四对不同颜色的传输线所组成,广泛用于以太网路和电话线中 。
非屏蔽双绞线电缆具有以下优点:
1.无屏蔽外套,直径小,节省所占用的空间,成本低;
2.重量轻,易弯曲,易安装;
3.将串扰减至最小或加以消除;
4.具有阻燃性;
5.具有独立性和灵活性,适用于结构化综合布线。
因此,在综合布线系统中,非屏蔽双绞线得到广泛应用 。
( )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( )。