Google Cybersecurity -Networks and Network Security
Network A network is a group of connected devices. Devices can communicate on two types of networks: a local area network, also known as a LAN, and a wide area network, also known as a WAN. A hub is a network device that broadcasts information to every device on the network, A switch makes connections between specific devices on a network by sending and receiving data between them. A switch is more intelligent than a hub. It only passes data to the intended destination. This makes switches more secure than hubs, and enables them to control the flow of traffic and improve network performance. A router is a network device that connects multiple networks together. A modem is a device that connects your router to the internet, and brings internet access to the LAN. For example, if a computer from one network wants to send information to a device on a network in a different g...