search

What is DNS

Dec 03, 2018 pm 01:47 PM
dns

DNS is also called domain name system, which is a hierarchical naming system built on a database; on the World Wide Web, dns maps IP and domain names to each other, and maps them into a distributed database, allowing users to access the Internet .

What is DNS

#The operating environment of this article: Windows 7 system, Dell G3 computer.

We often hear the term dns, but many people definitely don’t know what dns is. Let’s take a look at what dns means?

DNS is also called domain name system. It is a hierarchical naming system built on a database. On the World Wide Web, dns maps IP and domain names to each other and maps them into a distributed database, allowing users to access the Internet. .

The Domain Name System (DNS) includes a domain name tree. Each leaf is one or several resources. DNS is a domain. There may be many domains. Ultimately, they are managed by the administrator who is responsible for DNS. Parse and sort resources to address the user's needs. The DNS protocol runs on the UDP protocol, and when the request is larger than 512 bytes, the port number is 53.

We all know that an IP corresponds to a host name. A host name is composed of one or more strings. It is not easy to remember multiple characters. We only need to remember the DNS protocol. IP and There are two methods of host name mapping, dynamic mapping and static mapping.

What is DNS

#DNS resolution is the addressing method chosen by many people, and it is also an identity of the Internet. The development of domain names has enriched the resources of the Internet. Of course, if we set it up improperly, it will lead to hackers intruding and modifying the DNS information.

The above is a complete introduction to what DNS is. If you want to know more about HTTP video tutorial, please pay attention to the php Chinese website.

The above is the detailed content of What is DNS. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
WWE 2K25: How To Unlock Everything In MyRise
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

SublimeText3 English version

SublimeText3 English version

Recommended: Win version, supports code prompts!

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.