DNS is simply the domain name system, and translated into Chinese is the "domain name system".
Use of DNS: In the network environment of TCP/IP architecture (such as Inter), DNS is a very important and commonly used system. The main function is to convert easy-to-remember domain names into hard-to-remember IP addresses. The network host executing the above DNS service can be called DNS server. Basically, we usually think that DNS just converts domain names into IP addresses, and then uses the found IP addresses to connect (commonly known as "forward resolution"). In fact, the function of converting IP address into domain name is also commonly used. When the login is sent to a Unix workstation, the workstation will make a reverse query to find out where you connected from (often called "reverse analysis").
How does DNS work?
DNS works in a hierarchical way. For example, the domain name of Lilac Station of Harbin Institute of Technology is bbs.hit.edu. Of course, this domain name does not come out of thin air, but from. edu。 . edu。 It's a delegation from. Where did it come from? The answer comes from ".",the so-called "root domain". The root domain is already a top-level domain name. The "."layer of is managed by Internic (Internet Information Center). Domain names all over the world are like this, and they are awarded layer by layer.
What's the fastest internet speed? 40G/ s Swedish women have the fastest home broadband in the world. Download HD DVD in 2 seconds.
Sigbritt L, a 75-year-old man from Sweden? Thberg, she has an extremely fast network speed of 40 Gigabit, which is thousands of times faster than the general network speed, and is used by home users for the first time.
What is the fastest network speed of the network card? As far as network card specifications are concerned, the highest is 10000Mbps, and the lowest is1000 Mbps. There are two speeds in the middle: 1000Mbps and1000 Mbps, both of which are the speeds of Ethernet cards.
The network card on a PC is usually 1000Mbps or1000 Mbps.
The actual network speed cannot be said, which is seriously related to the specific situation. No monograph with more than 65438+ million words can't be explained.
What is the fastest internet speed in China? At present, the intranet can reach such a large scale, provided that there is a Gigabit network card and a Gigabit extranet, and there are not so many server tests hanging in the telecom room!
What is the fastest broadband network speed? What is the fastest broadband network speed that ordinary users can use? 100M？
It is the fastest to apply to the operator for the exclusive use of 100 Mbps optical fiber lines.
What is the fastest internet speed in China? Price? Telecom 100M, enterprise is about110000, and family seems to be 2000-3000, but * * * enjoys 100 m.
What is the fastest network speed of garbage motherboard? 100m broadband should theoretically have 16mb per second.
What is the fastest DNS in Shanghai? Shanghai Netcom uses DNS2 10.22.70.3 as the standby DNS2 10.22.70.2 Shanghai Telecom 202.96. 133202.96.209.6.
What is the fastest network speed of Netcom now? It must be a 3G network, and it is the fastest WCDMA in Unicom's 3G network.
What is the fastest internet speed in the world? 1000 MHz.