Detailed description of IP address Composition

Detailed description of IP address Composition
What is an IP address? I have heard of the word "ip address" for many times, but I still don't know what it is. I only know that my computer needs an IP address to access the Internet. In order to solve this problem, I have checked a lot of information and will share it with you below.

There are millions of hosts on the Internet. to distinguish these hosts, people assign a special address to each host, called an IP address. Each host can be accessed through an IP address. Internet IP addresses are centrally planned and managed by the NIC (Internet Network Information Center; at the same time, the three Network Information Centers Inter NIC, APNIC, and RIPE are responsible for IP Address Allocation in the United States and other regions. It can be said that each computer connected to the Internet must have a unique IP address, just as everyone has an ID card number. IP addresses are categorized as follows:

Fixed IP Address: a fixed IP address is the IP address assigned to a computer for a long time. Generally, a special server has a fixed IP address.

Dynamic IP Address: due to the shortage of IP Address Resources, users who access the Internet through dialing or ordinary broadband generally do not have a fixed IP address, but are allocated a temporary IP address dynamically by the ISP. Ordinary people generally do not need to know about Dynamic IP addresses, which are automatically completed by computer systems.

The Public address is the responsibility of Inter NIC (Internet Network Information Center. These IP addresses are assigned to organizations that register and apply to Inter NIC. Use it to directly access the internet. Private address is a non-registered address, which is used internally by the Organization. The IP address is composed of 32-bit binary numbers, which are 4 bytes. Each byte is composed of 8-bit binary numbers. To facilitate memory use of the decimal mark method, convert the binary values of four bytes into four decimal numbers and separate the four decimal segments. For example, the binary IP Address: 11001010 01011100 01111000 00101110 is converted to the decimal format: 202.92.120.46

What is an IP address?

An IP address consists of four numbers separated by small dots. Each number ranges from 0 ~ Between 255 (including 0 and 255 ). That is, 000.000.000.000 ~ Between 255.255.255.255. The four numbers are composed of two parts: the first part is the network ID and the other part is the host ID. The IP addresses can be divided into three categories: A, B, and C.

Class a ip :*.?.?.?

Class B IP :*.*.?.?

Class c ip :*.*.*.?

The above "*" indicates the network ID, "?" Host ID. The network ID indicates that your computer network belongs to the public network on the Internet, and the host ID determines the location of your computer in the public network. If you are using a LAN, you can check the IP address and the neighbors.

Source: Network Teaching Base original address: http://www.studynb1.com/wljc/122.html