{"id":15005,"date":"2025-04-25T10:00:00","date_gmt":"2025-04-25T08:00:00","guid":{"rendered":"https:\/\/truefalsehosting.rs\/?p=15005"},"modified":"2025-04-24T23:52:47","modified_gmt":"2025-04-24T21:52:47","slug":"what-is-dns-and-why-it-matters","status":"publish","type":"post","link":"https:\/\/truefalsehosting.rs\/en\/blog\/sta-je-dns","title":{"rendered":"What is DNS and why is it so important?"},"content":{"rendered":"<div class=\"wp-block-group has-global-padding is-layout-constrained wp-block-group-is-layout-constrained\">\n<div class=\"wp-block-columns wp-embed-aspect-16-9 wp-has-aspect-ratio is-layout-flex wp-container-core-columns-is-layout-07b7b7eb wp-block-columns-is-layout-flex\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\"><h1 class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio wp-block-post-title\">What is DNS and why is it so important?<\/h1>\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">The Internet is an indispensable part of everyday life, and DNS (Domain Name System), which translates readable domain names into <a href=\"https:\/\/truefalsehosting.rs\/en\/blog\/what-is-ip-address-and-how-it-works\">IP addresses<\/a>.<\/p>\n\n\n\n<p>DNS enables fast and accurate communication between devices and users, facilitating access to information.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">Because of its key role, it remains an irreplaceable part of the Internet infrastructure.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\"><figure style=\"padding-top:0;padding-bottom:0;margin-top:var(--wp--preset--spacing--20);margin-bottom:var(--wp--preset--spacing--20);\" class=\"wp-block-post-featured-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"700\" src=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Sta-je-DNS-i-zasto-je-vazan-i-koja-je-njegova-uloga.jpg\" class=\"attachment-post-thumbnail size-post-thumbnail wp-post-image\" alt=\"Ilustracija sa simbolom DNS mre\u017ee na plavoj pozadini\" style=\"object-fit:cover;\" srcset=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Sta-je-DNS-i-zasto-je-vazan-i-koja-je-njegova-uloga.jpg 1200w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Sta-je-DNS-i-zasto-je-vazan-i-koja-je-njegova-uloga-300x175.jpg 300w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Sta-je-DNS-i-zasto-je-vazan-i-koja-je-njegova-uloga-1024x597.jpg 1024w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Sta-je-DNS-i-zasto-je-vazan-i-koja-je-njegova-uloga-768x448.jpg 768w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Sta-je-DNS-i-zasto-je-vazan-i-koja-je-njegova-uloga-130x76.jpg 130w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Key points<\/h2>\n\n\n\n<ul class=\"wp-block-list wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n<li>DNS translates\u00a0domain names\u00a0into IP addresses.<\/li>\n\n\n\n<li>It is crucial for the functioning of the Internet.<\/li>\n\n\n\n<li>DNS records maintain protocol security and accuracy.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Basic concepts<\/h2>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"What is DNS\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/w_pBUL3ixC8?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS or Domain Name System allows Internet browsers to translate&nbsp;<a href=\"https:\/\/truefalsehosting.rs\/en\/blog\/what-is-a-domain-and-how-it-works\">domain names<\/a>&nbsp;into IP addresses, thus facilitating access to websites.<\/p>\n\n\n\n<h3 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Definition of DNS<\/h3>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS je klju\u010dna komponenta interneta koja upravlja prevo\u0111enjem simbola u brojeve. Svaki web sajt ima&nbsp;jedinstvenu IP adresu, ali kori\u0161\u0107enje tih adresa bilo bi nezgrapno za korisnike. Omogu\u0107ava da lako pamtljiva imena domena, poput &#8222;primer.com&#8220;, zamene te brojevne adrese.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">This convenience improves the user experience as it allows for easier navigation and access to the Internet.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">It is also used for other types of translation, such as redirecting email addresses and different types of resources.<\/p>\n\n\n\n<h3 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">How does DNS work?<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"704\" src=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Hijerarhija-i-Funkcija-DNS-a-1024x704.png\" alt=\"Grafikon koji prikazuje DNS hijerarhiju u obliku koncentri\u010dnih polukrugova sa oznakama nivoa\" class=\"wp-image-15010\" srcset=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Hijerarhija-i-Funkcija-DNS-a-1024x704.png 1024w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Hijerarhija-i-Funkcija-DNS-a-300x206.png 300w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Hijerarhija-i-Funkcija-DNS-a-768x528.png 768w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Hijerarhija-i-Funkcija-DNS-a-111x76.png 111w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Hijerarhija-i-Funkcija-DNS-a.png 1320w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">The DNS system works like the telephone directory of the Internet, translating domain names into IP addresses through a layered structure<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">The functioning of DNS relies on the distribution of information through <a href=\"https:\/\/truefalsehosting.rs\/en\/blog\/introduction-to-servers\">different servers<\/a>.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS is a hierarchical system where administration is done at different levels.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">Ova organizacija omogu\u0107ava brzu i efikasnu obradu zahteva. Tako\u0111e podr\u017eava &#8222;DNS zone&#8220; koje omogu\u0107avaju logi\u010dko odvajanje domena radi lak\u0161eg upravljanja, \u010dine\u0107i sistem fleksibilnim i skalabilnim.<\/p>\n\n\n\n<figure class=\"wp-block-table wp-embed-aspect-16-9 wp-has-aspect-ratio\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>DNS Hierarchy level<\/strong><\/td><td><strong>Description Functions<\/strong><\/td><\/tr><tr><td>User Requests<\/td><td>The user enters the site address into the browser - this triggers a DNS query.<\/td><\/tr><tr><td>DNS Resolver<\/td><td>The user's first contact with the DNS system.<\/td><\/tr><tr><td>Authoritative DNS Servers<\/td><td>They have the correct DNS records for the domain and correspond with the correct IP address.<\/td><\/tr><tr><td>Root DNS Servers<\/td><td>The highest level of the DNS system.<\/td><\/tr><tr><td>DNS Zones<\/td><td>They represent organizational units of the DNS space, they contain all information about domains within a certain zone (eg truefalsehosting.rs with all subdomains).<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Significance in Internet infrastructure<\/h2>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">The DNS system is a key component that enables the conversion of domains into IP addresses, which is necessary for communication between different devices on a network.<\/p>\n\n\n\n<h3 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS and Internet connectivity<\/h3>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"574\" src=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-i-Internet-povezivost-1024x574.jpg\" alt=\"Redovi serverskih jedinica sa povezanim mre\u017enim kablovima u data centru\" class=\"wp-image-15009\" srcset=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-i-Internet-povezivost-1024x574.jpg 1024w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-i-Internet-povezivost-300x168.jpg 300w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-i-Internet-povezivost-768x430.jpg 768w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-i-Internet-povezivost-136x76.jpg 136w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-i-Internet-povezivost.jpg 1310w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">DNS servers process billions of requests per day, allowing users to access Internet content in milliseconds<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS (Domain Name System) is a fundamental part of the Internet architecture that allows users to access web pages using easy-to-remember domains instead of numeric IP addresses.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS servers are distributed around the world, ensuring a high level of availability and stability, which is crucial for global connectivity.<\/p>\n\n\n\n<h3 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Security aspects<\/h3>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNSSEC (DNS Security Extensions) adds a layer of protection, ensuring that data between user and server is authentic.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS servers are often targets <a href=\"https:\/\/www.microsoft.com\/sr-latn-rs\/security\/business\/security-101\/what-is-a-ddos-attack\" target=\"_blank\" rel=\"noopener\">DDoS attacks<\/a>, which may compromise availability.<\/p>\n\n\n\n<h2 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS records and their role<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"574\" src=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-zapisi-i-njihova-uloga-1024x574.jpg\" alt=\"Digitalna ilustracija laptopa povezanog sa serverskim jedinicama u stilu sajber mre\u017ee\" class=\"wp-image-15007\" srcset=\"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-zapisi-i-njihova-uloga-1024x574.jpg 1024w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-zapisi-i-njihova-uloga-300x168.jpg 300w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-zapisi-i-njihova-uloga-768x430.jpg 768w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-zapisi-i-njihova-uloga-136x76.jpg 136w, https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/DNS-zapisi-i-njihova-uloga.jpg 1456w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">There are several types of DNS records - A, CNAME, MX and TXT - each with its own specific role in the functioning of the Internet<\/figcaption><\/figure>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS records are the basic elements in the DNS system that enable the association of domains with IP addresses.<\/p>\n\n\n\n<h3 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Record types<\/h3>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS records define specific information about domains and IP addresses.&nbsp;<strong>And the record<\/strong>, which associates a domain with a specific IPv4 address.&nbsp;<strong>AAAA records<\/strong>&nbsp;are used to connect to IPv6 addresses.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\"><strong>CNAME records<\/strong>&nbsp;serve for aliasing one domain to another.&nbsp;<strong>MX records<\/strong>&nbsp;specify e-mail servers, while&nbsp;<strong>TXT records<\/strong>&nbsp;useful for ownership verification and security configuration.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\"><strong>NS records<\/strong>&nbsp;point to the DNS servers that are authoritative for the domain.&nbsp;<strong>SOA records<\/strong>&nbsp;provide administrative information, such as refresh times for DNS servers.<\/p>\n\n\n\n<h3 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Understanding DNS Queries<\/h3>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">DNS queries are the processes through which client devices request information from the DNS system. <a href=\"https:\/\/truefalsehosting.rs\/en\/blog\/what-is-url-basics-and-importance\">enter the URL into the browser<\/a>, the client sends a DNS query to obtain the corresponding IP address.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">If the information is not available, the Query is sent to the authoritative servers in a hierarchical way, starting with the root server, then the TLD server, and so on.<\/p>\n\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\">The efficiency and security of DNS queries depend on the correct configuration of DNS servers and records.<\/p>\n\n\n\n<h2 class=\"wp-block-heading wp-embed-aspect-16-9 wp-has-aspect-ratio\">Frequently Asked Questions<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block wp-embed-aspect-16-9 wp-has-aspect-ratio\">\n<div class=\"rank-math-list\">\n<div id=\"faq-question-1744376135932\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Is it possible to use alternative DNS servers and what are the advantages?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Da, korisnici mogu konfigurisati svoje ure\u0111aje ili mre\u017ee da koriste alternativne DNS servere, kao \u0161to su Google DNS (8.8.8.8) ili Cloudflare DNS (1.1.1.1).<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1744376230743\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What is the relationship between VPN and DNS?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>When <a href=\"https:\/\/truefalsehosting.rs\/en\/blog\/vpn-advantages-and-application\">use a VPN<\/a>, DNS zahtevi mogu biti preusmereni kroz VPN servere kako bi se spre\u010dilo &#8222;<a href=\"https:\/\/www.expressvpn.com\/sr\/dns-leak-test\" target=\"_blank\" rel=\"noopener\">DNS leak<\/a>&#8220; \u2013 situaciju gde va\u0161 stvarni DNS server otkriva lokaciju i identitet korisnika. Bez pravilne konfiguracije, DNS upiti mogu zaobi\u0107i VPN i ugroziti privatnost<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1744376248399\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\"><strong>\u0160ta je &#8222;DNS poisoning&#8220; i kako se mo\u017ee spre\u010diti?<\/strong><\/h3>\n<div class=\"rank-math-answer\">\n\n<p>DNS poisoning (or cache poisoning) is an attack in which an attacker injects false information into a server's DNS cache, redirecting users to malicious sites.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1744376257199\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\"><strong>Can DNS be used to block access to certain websites?<\/strong><\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Yes, DNS filtering is a method to restrict access to certain domains.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1744376273730\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\"><strong>How does DNS affect web page loading speed?<\/strong><\/h3>\n<div class=\"rank-math-answer\">\n\n<p>DNS resolution is the first step in loading a site.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n\n\n<p class=\"wp-embed-aspect-16-9 wp-has-aspect-ratio\"><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Internet je neizostavan deo svakodnevnog \u017eivota, a za njegovo funkcionisanje klju\u010dan je DNS (Domain Name System), koji prevodi \u010ditljiva imena domena u IP adrese. DNS omogu\u0107ava brzu i ta\u010dnu komunikaciju izme\u0111u ure\u0111aja i korisnika, olak\u0161avaju\u0107i pristup informacijama. Njegova struktura i zapisi igraju va\u017enu ulogu u bezbednosti i pouzdanosti internet saobra\u0107aja. Zbog svoje klju\u010dne uloge, ostaje [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15008,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[37],"tags":[77,39,50,46,59],"class_list":["post-15005","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novosti","tag-dns","tag-domen","tag-ip-adresa","tag-server","tag-url"],"jetpack_featured_media_url":"https:\/\/truefalsehosting.rs\/wp-content\/uploads\/2025\/04\/Sta-je-DNS-i-zasto-je-vazan-i-koja-je-njegova-uloga.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/posts\/15005","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/comments?post=15005"}],"version-history":[{"count":2,"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/posts\/15005\/revisions"}],"predecessor-version":[{"id":15142,"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/posts\/15005\/revisions\/15142"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/media\/15008"}],"wp:attachment":[{"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/media?parent=15005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/categories?post=15005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/truefalsehosting.rs\/en\/wp-json\/wp\/v2\/tags?post=15005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}