广播和组播之间的区别

1.广播：
广播传输(一对一)技术，可以分为两种类型：受限广播，直接广播。在广播模式下，传输从一台主机传输到LAN上连接的所有其他主机。桥等设备使用此功能。诸如ARP之类的协议实现了这一点，以便知道主机对应IP地址的MAC地址。 ARP确实将ip地址转换为mac地址。 RARP则相反。

2.组播：
多播有一个/多个发送者，一个/多个接收者参与了数据传输流量。在多播中，流量斜倚在单播和广播的边界之间。它是服务器的直接数据流单副本，然后将其模拟并路由到请求它的主机。 IP多播需要支持其他一些协议，例如IGMP(Internet组管理协议)，多播路由才能正常工作。而且在有类IP寻址中，类D保留用于多播组。

广播和组播之间的区别：

S.No.	Broadcast	Multicast
1.	It has one sender and multiple receivers.	It has one or more senders and multiple receivers.
2.	It sent data from one device to all the other devices in a network.	It sent data from one device to multiple devices.
3.	It works on star and bus topology.	It works on star, mesh, tree and hybrid topology.
4.	It scale well across large networks.	It does not scale well across large networks.
5.	Its bandwidth is wasted.	It utilizes bandwidth efficiently.
6.	It has one-to-all mapping.	It has one-to-many mapping.
7.	Hub is an example of a broadcast device.	Switch is an example of a multicast device.