Collision/Broadcast Domains
All stations on an Ethernet segment are connected to the same segment. Therefore, all signals are received by all the devices. When devices sent signals at the same time, a collision occurs. A scheme is need to detect and
Advantages of VPN
Advantages Reduce cost implementation (We don’t need to use lease line/ ISDN/ FR, mobile only need to dial local ISP to connect to branch office) Security (VPN provide strong security …