what it is and how it works

The DNS, which stands for Domain Name System, was conceived almost 40 years ago because large distributed systems needed hierarchical name servers. It is a system of domain names and is the largest distributed naming service existing today: it is a service useful for “translating” the names of network nodes into IP addresses. The operation that transforms names into IP addresses is called DNS resolution.

The structure of the DNS

The DNS has a tree structure (hierarchical) divided into domains. Each node (domain) of the tree is given a nameserver, that is a server that answers the questions of name resolution, and that contains a database with information on that particular domain. We speak instead of the root nameserver to refer to the servers of the root domain, called the DNS root zone. These retain information from top-level domains (TLDs), such as .it or .org. Second level domains are instead those that add an extra subdivision compared to the previous ones, such as TecHLecToR. Resources are therefore identified by a pathname of up to 255 characters, which are composed of labels of at most 63 characters. Each node, ie every database partition, contains a sequence of resource records. The most important types of resource records form the contents of the nodes in the DNS name space. On the DNS all the resources are saved, for example, if we talk about the Internet, all the computers with the same IP address must be in the DNS, or when we want to send an email and type in the email address of the recipient, the latter is translated from DNS into its IP address, then a naming > IP address translation is performed .Since the server is divided into domains it can happen that the entities, being able to move, change domain and consequently also name. So how do you handle moving servers to different domains? For this problem, known as entity localization, different approaches have been introduced: to name a few broadcasting, multicasting, home-based, hierarchical. To find out which are the best DNS servers that allow you to browse faster you can consult our guide, but not only: if you need to change the DNS you can do it through simple steps by reading the article available on this page.

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How to change DNS on Windows and Mac and which ones to choose

The DNS (domain name system) is a system used for the resolution of web domain names. In practice, it is a database that contains all the “domain name / IP address” matches of the websites we visit. If you are not sure what we are talking about, we invite you to read this article, in which we explain better what DNS is and how it works. Once the functioning of the DNS is understood correctly, you will agree that to surf in complete safety on the web it is necessary to change DNS and not use those of your provider. Leaving DNS automatically, in fact, means making sure that your provider always knows which websites you are browsing, keeping this information stored for years, easily accessible to malicious people who could access your confidential information.SEE ALSO: How Can I Change DNS On Android? Furthermore, changing DNS may also be useful in cases where the websites are, due to censorship reasons, obscured and made inaccessible by the provider we use (exactly as happened with the Games Torrents website).

How to change DNS Server on Windows and Mac

Not sure how to change DNS servers on your computer? The procedure is simpler than it may seem. All you have to do is follow these simple steps.

Change DNS on Windows

  • Press Start at the bottom left;
  • Search and access “Network and Sharing Center”;
  • Select your internet network;
  • Scroll to find “Internet protocol version 4 (TCP / IPv4)”;
  • Double-click on the option;
  • Select the “Use the following DNS server addresses” option;
  • Instead of the automatically assigned values, enter the alternative DNS servers you wish to use;
  • Press “OK”;
  • Restart the computer to confirm the changes.
  • Change DNS on Mac

  • Click on the Apple in the upper left corner;
  • Select System Preferences> Network> Advanced> DNS;
  • Press on the “+” under the DNS Server section and enter the ones you prefer to use;
  • Click OK> Apply;
  • Restart the computer to confirm the changes.
  • Which DNS Server to choose?

    There are several reliable DNS servers, both public and private, which you can use as an alternative to those preset by your provider. Among these, there are those offered by OpenDNS, or by DNS Advantage. We have collected the best DNS servers in this dedicated article.

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    the best to surf faster and more safely

    Are you looking for a complete list containing the best DNS servers of the moment? You found it! In today’s article, in fact, we’ll show you all the best DNS servers to navigate faster, and safely, with your device, be it a PC or a smartphone. As you surely have learned by reading our dedicated guide available on this page, the Domain Name System – known more simply as DNS – is the computer system that allows the user to connect to the desired website. In a more specific way the DNS servers have the task of translating the URL of the site into its public IP address, and therefore be reachable.

    The importance of a quality DNS

    As can be easily understood, however, if the DNS used is not the best, problems may arise during navigation. When a new Internet connection is configured, the DNS servers are also set in a completely automatic way.SEE ALSO: 4 Things to Know Before Choosing Your Web Host Has it ever happened to you, for example, to notice a particular – not to say annoying – slowness in the loading of internet pages or to read the message “Unable to reach the site”? Here, these anomalies could be caused precisely by a poor quality DNS server. Fortunately, changing DNS is not only an operation for everyone, but it is also fast. Choosing the best DNS server is important because it allows you to browse faster and avoid blocking sites caused by the default Domain Name System.

    The best Italian and international DNS

    As anticipated, setting up your PC or smartphone with the best DNS server is essential for an optimal browsing experience. Without it, we would only risk encountering problems of various kinds. So let’s go on to see what are the best DNSs to use on our device without further delaying: DNS Google

    • Primary DNS: 8.8.8.8
    • Secondary DNS: 8.8.4.4

    DNS Telecom Italia / TIM

    • Primary DNS: 85.37.17.51
    • Secondary DNS: 85.38.28.97

    DNS Fastweb

    • Primary DNS: 83.103.25.250
    • Secondary DNS: 62.101.93.101

    DNS Tiscali

    • Primary DNS: 213.205.32.70
    • Secondary DNS: 213.205.36.70

    DNS OpenDNS

    • Primary DNS: 208.67.220.220
    • Secondary DNS: 208.67.222.222

    DNS CloudFlare

    • Primary DNS: 1.1.1.1
    • Secondary DNS: 1.0.0.1

    SEE ALSO: Best 5 reasons to choose a real server The efficiency of a DNS server may vary depending on many factors, including geographic location. For this reason, it is useful to rely on tools like DNS Benchmark, which can help us understand if the DNS used is the fastest, or if there are more performing alternatives. Also, if you don’t know how to change DNS, don’t worry. We have also thought of this: here you will find a complete guide on how to modify the DNS servers.

    How to update Xiaomi Redmi 7 MIUI Version/OS

    Without a shadow of a doubt, your Redmi 7 is doing a great job but, if it were to give software problems, in the worst case scenario you can always resort to a hard reset. Before proceeding, remember that it is strongly recommended to make a complete backup of the device, so as to ensure that you do not lose any important data on it, such as telephone numbers, photos, videos and/or messages. Fortunately, most times software anomalies can be solved simply by updating the system firmware. The various updates in fact have the purpose of correcting any bugs and problems, as well as improving the stability and security of the smartphone. It could also happen that the installation of one or more applications expressly requires the latest software version available. If you were wondering how to upgrade Redmi 7 then you’re in the right place. In this guide, we will see how to search and install the latest firmware for Redmi 7. It is really simple and fast, it will not be enough to do anything but follow the steps below. This way you can also check if your Redmi 7 already has the latest software version.

    How to update the MIUI on Redmi 7

  • From the Home search and select the Settings icon;
  • Click Devices> MIUI Version> Search;
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