What is the relationship between IP and domain name, and what is the difference between IP and domai

IP and domain name are a correspondence, a domain name at the same time only one or no IP correspondence, an IP may have one or more domain names at the same time, or even a domain name does not exist.

So what exactly is the relationship between domain name and IP? For example, your current geographical coordinates are xx degrees xx minutes east longitude and xx degrees xx minutes north latitude, which is the only IP address in the world, but it is not easy for others to remember or find you. So we now introduce the address system, for example, this coordinate is Room 407, Building 26, No. 100, Jiefang Road, XX City, which corresponds to your geographical coordinates, this is the domain name, the name has a certain meaning and is easy to remember is one of its advantages.

So how does the computer find this server on the network when you enter this domain name, which requires the explanation of the DNS server, DNS is the abbreviation of the domain name service, which is responsible for interpreting the domain name as a specific IP address, such as the upstairs said, you access, enter the domain name, go through your local name server, interpret to the IP address of the server, then you can access. As for how many ways your computer has gone through to access this server, you can use tracert if you are interested

command, wait for a while, how many servers pass through will be displayed on the screen.

If an IP address is equivalent to a real-life communication address, the essence of all communication in the network is actually based on this address to achieve the purpose.

However, this kind of IP address is composed of numbers, which is inconvenient for people to remember, so defining a domain name to solve the trouble of IP address, such as access only needs to be typed in.

Just do it, and don't have to write it out with a lot of effort.

But your computer doesn't know it.

It is equivalent to that there is a correspondence between them. The corresponding data of the IP address and domain name is stored in a public server, which is called a DNS server. When the computer accesses the network, it will first go to this server, find the corresponding IP address according to the domain name, and then actually go to the destination, but the process is very fast, and you can't feel it at all.

This process is called IP address resolution.

You type in the address bar.

You can visit the SOHU homepage, or you can enter it to open the same page.

In fact, when you type in the address bar.

When your machine automatically connects to the DNS server for domain name resolution, put.

IP is like coordinates, how many degrees of east longitude. is unique.

A domain name is like an address, how many numbers there are in a certain province and a certain city.

Correspondence.

An IP address can correspond to multiple domain names, but a domain name can only correspond to one IP address

<> because IP addresses are boring long and long numbers that are easy to remember, there are domain names, such as: "fuyeor com", where com is the top-level domain, or also called the root domain name and domain extension. Or the common "www fuyeor com" format.

The relationship between the domain name and the IP address is that they both provide the access entrance for **, but the form of access is different. A domain name exists as a form in place of an IP address. The reason is that the IP address is more troublesome in the process of surfing the Internet, and it is not easy to record, so there needs to be a simple way to record, and the domain name is generated.

<> because IP addresses are boring long and long numbers that are easy to remember, there are domain names, such as: "fuyeor com", where com is the top-level domain, or also called the root domain name and domain extension.

Or the common "www fuyeor com" format.

Let's take a look at what I said:

IP address, I believe everyone knows that it is the address of the computer on the Internet, unique, which is equivalent to the address we usually write credit (strictly speaking, it should be equivalent to "address + name", but for the sake of convenience, let's say it for the time being, it's not wrong).

The domain name is the registered name of the IP, it is created for the convenience of us to remember, you think each IP is a string of numbers, let you remember a few ** I'm afraid it's not easy, give it a name will be easy to remember more.

IP is equivalent to our usual ID number, which is our legal identity number and legal citizen name;

The domain name is our name, used to make it easier for our friends to remember our name, you want if our friends around us don't use names, all with a string of ID code to mark, if you want to call a person, you have to shout that a large string of numbers, can't stand it...

For example: **'s IP is.

That string of numbers is the IP, and the name "" is the domain name of this string of IPs.

IP addresses have a one-to-many relationship with domain names. An IP address can correspond to multiple domain names, but a domain name has only one IP address. IP addresses are made up of numbers, which is not easy to remember, so with a domain name, you can find the IP address by the domain name address.

IP address is composed of numbers and decimal points, relatively long, not easy to remember, domain name is to facilitate the memory of IP address and appeared, composed of letters, numbers, and composition, domain name (such as COM, TOP, CN, etc.) The appearance of the domain name (such as COM, TOP, CN, etc.) greatly facilitates the memory and access of the IP address.

When a user wants to exchange information with a computer on the Internet, he or she simply uses a domain name and the network automatically translates to an IP address to find the computer.

An IP address is 32 bits and consists of two parts, the network identity (NetID) and the host identity (HostID). In order to meet the growing demand for address space, the new version of the IP has been officially named IPv6, expanding the address space to 128 bits.

Every computer and every user on the Internet has a unique address to distinguish it from the tens of millions of other users, millions of computers, and thousands of organizations on the Internet. There are two formats for computer addresses on the Internet: the IP address format.

Each IP address consists of 4 numbers less than 256, separated by dots. For example, it represents the IP address of a computer. Royal Domain Name Format.

A domain name consists of three parts, separated by dots, each of which consists of at least two letters or numbers. The last part of the domain name is called the high-level domain name, which is standardized in the Internet and consists of two letters. The high-level domain name in China is cn, and the high-level domain name in the United States is us (us is often omitted in the domain name of the United States, and the next-level domain name is used as the high-level domain name).

A domain name is the name of a computer or group of computers on the Internet that consists of a string of names separated by dotsThe domain name is resolved by DNS to an IP address, which is then accessed using the IP。For example, "fuyeor com" is a domain name where com is the top-level domain, or the root domain or domain extension.

It's easier for us to remember domain names (e.g. fuyeor com), but machines only know IP addresses, and as long as this IP address corresponds to the relevant domain name, this is called domain name resolution. Domain name resolution needs to be done by a dedicated domain name resolution server, and the whole process is automated. Domain Name Resolution Protocol (DNS) is used to map easy-to-remember host domain names and email addresses to IP addresses that are easily recognizable to computers.

Example: www fuyeor com is a domain name that corresponds to an IP address. DNS is like an automatic directory where we can dial the name of the Fuyeor directly in place of the number (IP address).

When we call the ** name directly, DNS converts a human-friendly name (e.g., www fuyeor com) into a machine-friendly IP address (e.g., .

** is often a "second-level fuyeor root domain", or simply a "fuyeor root domain" format without a second-level domain. The number of levels of domain names is to see how many are behind the domain name"."A delimited suffix.

For example: "www fuyeor com" has two or more options".The delimited suffix is a second-level domain name.

The second-level domain name is the domain name that is hosted under the main domain name, which is the domain name one level to the left of the naked domain name. Generally speaking, a second-level domain name is a format like 3 Ws (www).

Among them, in "www fuyeor com", fuyeor is the main body of the domain name; The root domain name is com, net, cn, and the second-level domain is "www".

Function. First, the construction of **.

The most widely used domain name is to build a website, whether it is a blog or a business**, a domain name is one of the necessary conditions for building these terminals. Therefore, friends who want to build a website will register a domain name that they need. An excellent domain name can make customers remember and find you quickly, so that the promotion can get twice the result with half the effort, and greatly enhance the brand value.

Function. 2. Brand protection.

For some well-known brands such as JD, JD, etc., there will be a phenomenon of bulk registration or purchase of similar related domain names. JD.com, Tencent, Alibaba and other brands have dedicated personnel to buy domain names related to their products or brands and have high similarity in bulk. Because enterprises that attach importance to their own brands generally register and protect the domain name suffixes of the more important debate cars, so as to prevent people from using these easily confused domain names to do some things that rub traffic or even damage the brand reputation.

1. What is an IP address? What is his role?

An IP address is a special address assigned to each host on the Internet in order to distinguish between hundreds of millions of hosts, and each host can be accessed through the IP address.

IP address role.

1) Distinguish between hundreds of millions of hosts and assign a special address, so his main role is to distinguish different hosts.

2) IP address literally, it has the role of positioning, his positioning principle depends on its allocation principle, IP address query is based on this.

2.What kind of structure is used?

What is the purpose of a domain name?

dns(domin

namesystem) is an abbreviation for Domain Name Service, which is an organization that is organized.

Domain hierarchy.

Naming system for computer and web services.

What does an address have to do with a DNS domain name.

Since IP addresses are all numbers, the Domain Name Service System (DNS) has been introduced on the Internet to make it easier for users to remember

namesystem）。When you type in a domain name, this information first reaches the server that provides the domain name resolution, and then the domain name is resolved to the corresponding IP address. The process of accomplishing this task is called domain name resolution.

Multiple domain names. You can bind to one IP address

Go up. To put it simply, it is domain name resolution.

DNS is a protocol that resolves your domain name into an IP address.

For example, a certain DNS, see.

In this way, you can directly find the other party's server host for quick access.

IP addresses and domain names are equivalent to real addresses, one IP can correspond to multiple domain names, but a domain name can only have one IP.