1. IP address
An IP address is a unique digital address that identifies a computer's location on the Internet and local area networks. Each device has its own unique IP address, just as each house has its own unique address. An IP address consists of 32 binary bits, usually expressed as four eight-digit numbers, such as 192.166.6.0.1.
2. The role of IP address
IP addresses are the basis of Internet communication, allowing devices to communicate with each other on the Internet. When a device sends data, the data packet contains the IP addresses of the sender and the receiver, and the router forwards this data packet to the target device. Therefore, IP addresses have two main functions:
Marking equipment
An IP address is like a device's phone number, identifying the device's location on the network. Internet operators can use IP addresses to determine the location of a device and manage and monitor it.
Connecting devices
By using IP addresses, different devices can connect to each other for data transmission and communication. Devices can be directly connected in a local area network, and can be connected to the Internet using the function of a router, thereby achieving global connectivity.
3. Types of IP addresses
There are two types of IP addresses: IPv4 and IPv6.
IPv4
IPv4 (Internet Protocol Version 4) is the most commonly used IP address standard, with a 32-bit address length. It allows billions of devices in the world to connect to the Internet, but as the number of devices increases, it also means that available IP addresses will become scarce.
IPv6
IPv6 (Internet Protocol Version 6) is an alternative IP address standard that uses a 128-bit address length and can provide more address space for devices. The promotion and popularization of IPv6 enables the Internet to support more devices and faster speeds.
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