引导和非引导媒体之间的区别

先决条件 – 传输媒体的类型

引导媒体：
在这种类型的介质中，信号能量被封闭并引导在固体介质中。引导媒体用于点对点链接或具有各种连接的共享链接。在引导介质中，相邻电缆中的发射会产生干扰。需要适当屏蔽引导介质以减少干扰问题。

非引导媒体：
在非制导介质中，信号能量通过无线介质传播。无线媒体用于全方位的无线电广播。选择微波链路用于长距离广播传输非制导媒体。干扰也是非制导媒体中的一个问题，来自竞争信号的重叠频带可以改变或消除信号。

让我们看看引导媒体和非引导媒体之间的区别：

S.No.	Guided Media	Unguided Media
1.	The signal energy propagates through wires in guided media.	The signal energy propagates through air in unguided media.
2.	Guided media is used for point to point communication.	Unguided media is generally suited for radio broadcasting in all directions.
3.	Discrete network topologies are formed by the guided media.	Continuous network topologies are formed by the unguided media.
4.	Signals are in the form of voltage, current or photons in the guided media.	Signals are in the form of electromagnetic waves in unguided media.
5.		Examples of unguided media are microwave or radio links and infrared light.
6.	By adding more wires, the transmission capacity can be increased in guided media.	It is not possible to obtain additional capacity in unguided media.