{"id":967,"date":"2025-12-29T08:45:22","date_gmt":"2025-12-29T07:45:22","guid":{"rendered":"https:\/\/mybox.com\/help\/?post_type=manual_kb&#038;p=967"},"modified":"2026-06-01T10:12:11","modified_gmt":"2026-06-01T08:12:11","slug":"ce-este-dns-si-ce-face-un-server-dns","status":"publish","type":"manual_kb","link":"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/","title":{"rendered":"Ce este DNS \u0219i ce face un server DNS?"},"content":{"rendered":"<div class=\"translation-block translation-block-merged\">\n<p class=\"wp-block-paragraph\">The Domain Name System (DNS) is a fundamental part of how the internet works. It translates human-readable domain names (like example.com) into machine-readable IP addresses (like 192.0.2.1) that computers use to identify each other on the network.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Without DNS, users would need to remember numerical IP addresses instead of easy-to-use domain names.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#What_DNS_does\" >What DNS does<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#What_a_DNS_server_does\" >What a DNS server does<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#How_DNS_resolution_works\" >How DNS resolution works<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Types_of_DNS_servers_involved\" >Types of DNS servers involved<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#DNS_resolver\" >DNS resolver<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Root_name_server\" >Root name server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#TLD_name_server\" >TLD name server<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Authoritative_name_server\" >Authoritative name server<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Primary_and_secondary_DNS_servers\" >Primary and secondary DNS servers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Dynamic_DNS_DDNS\" >Dynamic DNS (DDNS)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Types_of_DNS_queries\" >Types of DNS queries<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Common_public_DNS_providers\" >Common public DNS providers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/mybox.com\/help\/ro\/knowledgebase\/what-is-dns-and-what-does-a-dns-server-do\/#Summary\" >Summary<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_DNS_does\"><\/span>What DNS does<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<\/div>\n\n<div id=\"mybox-654438454\" class=\"mybox-content mybox-entity-placement\"><div class=\"early-access-banner-inpost\">\r\n  <div class=\"banner-left-inpost\">\r\n    <div class=\"icon-box-inpost\">\r\n      <img decoding=\"async\" src=\"https:\/\/mybox.com\/help\/wp-content\/uploads\/2026\/02\/square-info-icon.svg\" alt=\"Info\">\r\n    <\/div>\r\n    <div class=\"text-box-inpost\">\r\n      <span class=\"label-inpost\"><span class=\"translation-block translation-block-banner-text\">Acces timpuriu<\/span><\/span>\r\n      <h4><span class=\"translation-block translation-block-banner-text\">Mai ave\u021bi nevoie de ajutor?<\/span><\/h4>\r\n      <p><span class=\"translation-block translation-block-banner-text\">Contacta\u021bi echipa noastr\u0103 de servicii pentru clien\u021bi.<\/span><\/p>\r\n    <\/div>\r\n  <\/div>\r\n\r\n  <div class=\"banner-right-inpost\">\r\n    <a href=\"https:\/\/panel.mybox.com\/helpdesk2\/v\/list\/\" class=\"banner-button-inpost\"><span class=\"translation-block translation-block-banner-text\">Trimite mesaj<\/span><\/a>\r\n  <\/div>\r\n<\/div><\/div>\n\n<div class=\"translation-block translation-block-merged\"><p class=\"wp-block-paragraph\">DNS is responsible for:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>converting domain names into IP addresses<\/li>\n\n\n\n<li>locating the correct server for a website<\/li>\n\n\n\n<li>enabling browsers to load websites using URLs<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">For example, when you type a domain into your browser, DNS finds the correct IP address and connects you to the website.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"What_a_DNS_server_does\"><\/span>What a DNS server does<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A DNS server is a system that stores and manages DNS records. Its main job is to respond to DNS queries by providing the correct IP address for a domain name.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In simple terms:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>you enter a website name<\/li>\n\n\n\n<li>the DNS server looks it up<\/li>\n\n\n\n<li>it returns the matching IP address<\/li>\n\n\n\n<li>your browser connects to the website<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"How_DNS_resolution_works\"><\/span>How DNS resolution works<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The process of translating a domain name into an IP address is called DNS resolution. It involves several steps:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>The browser sends a request for a domain<\/li>\n\n\n\n<li>A DNS resolver processes the request<\/li>\n\n\n\n<li>The system checks different DNS servers<\/li>\n\n\n\n<li>The correct IP address is returned<\/li>\n\n\n\n<li>The browser loads the website<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Types_of_DNS_servers_involved\"><\/span>Types of DNS servers involved<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Several types of servers participate in DNS resolution:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"DNS_resolver\"><\/span>DNS resolver<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Receives the initial request from the user and starts the lookup process.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Root_name_server\"><\/span>Root name server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Directs the query to the correct top-level domain (TLD) server.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"TLD_name_server\"><\/span>TLD name server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Handles domain extensions like .com, .org, or .net.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Authoritative_name_server\"><\/span>Authoritative name server<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Provides the final and correct IP address for the domain.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Primary_and_secondary_DNS_servers\"><\/span>Primary and secondary DNS servers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Primary DNS server<\/strong>: stores the original DNS zone data for a domain<\/li>\n\n\n\n<li><strong>Secondary DNS server<\/strong>: provides a backup copy for redundancy and reliability<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">This setup improves availability and protects against downtime.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Dynamic_DNS_DDNS\"><\/span>Dynamic DNS (DDNS)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Dynamic DNS automatically updates IP addresses when they change. It is useful for systems where the IP address is not static, such as home networks or small businesses.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Types_of_DNS_queries\"><\/span>Types of DNS queries<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are three main types:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Recursive query<\/strong>: the server resolves the full request<\/li>\n\n\n\n<li><strong>Iterative query<\/strong>: the server provides the best available answer or redirects<\/li>\n\n\n\n<li><strong>Non-recursive query<\/strong>: the answer is already known or cached<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Common_public_DNS_providers\"><\/span>Common public DNS providers<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Popular DNS services include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Cloudflare DNS<\/li>\n\n\n\n<li>Google Public DNS<\/li>\n\n\n\n<li>OpenDNS<\/li>\n\n\n\n<li>Quad9<\/li>\n\n\n\n<li>AdGuard DNS<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">These providers often improve speed, reliability, and security.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Summary\"><\/span>Summary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">DNS is a system that translates domain names into IP addresses, making it possible to access websites using simple names instead of numeric addresses. DNS servers handle this translation process, ensuring that browsers can quickly and correctly load websites.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"template":"","format":"standard","manualknowledgebasecat":[42],"manual_kb_tag":[],"class_list":["post-967","manual_kb","type-manual_kb","status-publish","format-standard","hentry","manualknowledgebasecat-miscellaneous"],"_links":{"self":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/967","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb"}],"about":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/types\/manual_kb"}],"author":[{"embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":3,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/967\/revisions"}],"predecessor-version":[{"id":4720,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb\/967\/revisions\/4720"}],"wp:attachment":[{"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/media?parent=967"}],"wp:term":[{"taxonomy":"manualknowledgebasecat","embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manualknowledgebasecat?post=967"},{"taxonomy":"manual_kb_tag","embeddable":true,"href":"https:\/\/mybox.com\/help\/ro\/wp-json\/wp\/v2\/manual_kb_tag?post=967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}