What is a Network Address?

In the field of computers, the network is to use physical links to connect isolated workstations or hosts together to form a data link, so as to achieve the purpose of resource sharing and communication.

Network addresses are currently divided into five categories, which are represented by English letters A, B, C, D, and E, and are divided into two format segments.

The solution of insufficient network addresses and waste is to reduce the waste of IP. In recent years, with the continuous emergence of new networks and networks

The network address complies with the IPV4 protocol. With the increasing number of network users, there has been a trend that cannot meet user needs. The new development direction is IPV6. In fact, its development is easy to understand. Since 32 bits can no longer meet the needs, the most direct way is of course to expand the number of bits. IPV6 extends the address to 128 bits. However, since the previous network communication has always used the previous protocol, the working standards of many hardware communication devices have not changed. This is a bottleneck in development. To change the standard from the new equipment, how to convert the setting standard in work is an important issue to be considered in practical applications. ^[2]

Network address definition

An IP address is a way of addressing a host on the Internet. Each computer is assigned a logical address so that it can not only identify the computer but also share information. An IP address is a 32-bit binary number, which is usually divided into 4 "8-bit binary numbers". IP addresses are like home addresses. Users need to know the IP address if they want to pass information. The home address is mainly expressed in words. The IP address is represented by a binary number. Users have a certain degree of understanding of IP addresses in order to recognize the role of IP addresses in their lives, so as to effectively divide IP addresses. ^[3]

Network address role

The network address is not written in Chinese characters, but is actually a 32-bit binary number stream. But all network users have never entered a binary stream in the network. Is there an error? Of course not, because the length of 32 bits is too long, it is not easy to remember. So it is obviously inappropriate for network users to memorize the 32-digit sequence. People have come up with another representation method, called dotted decimal notation. The space is limited. To put it simply, 8-digit decimal numbers are used to represent the 32-digit binary sequence . Here some friends who have more computer operations may have a certain impression. However, most web users still enter a specific URL in the browser, such as www.baidu.com, we just need to remember this name. This is the domain name resolution for network users' convenience. In other words, a convenient name for a network address. There is a one-to-one correspondence between the two. Using the previous example, "Harbin Railway Technical Vocational College" corresponds to an address, which in turn is represented by this name. If you want to go to this address without knowing where, you take a taxi and say the name, and the driver will find the corresponding place according to the name of the unit. So the two correspond to each other. In short, the network IP address can describe the location of different nodes in the network, use some protocols to achieve access, and use simple and easy to remember names to achieve access. ^[2]