{"id":2853,"date":"2021-06-29T13:55:48","date_gmt":"2021-06-29T12:55:48","guid":{"rendered":"https:\/\/exa.net.uk\/?p=2853"},"modified":"2024-10-16T16:17:40","modified_gmt":"2024-10-16T15:17:40","slug":"what-is-dns","status":"publish","type":"post","link":"https:\/\/edit.exa.net.uk\/knowledge-hub\/computing\/what-is-dns\/","title":{"rendered":"What is DNS?"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"2853\" data-post-id=\"2853\" data-obj-id=\"2853\" class=\"elementor elementor-2853 dce-elementor-post-2853\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-67deddaa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-dce-background-image-url=\"https:\/\/exa.net.uk\/wp-content\/uploads\/2021\/03\/blog-post-top.png\" data-id=\"67deddaa\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;6d8e4b3&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-4d5990fd\" data-id=\"4d5990fd\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div data-dce-background-color=\"#FFFFFF\" class=\"elementor-element elementor-element-5a5a6495 master-btn-width elementor-mobile-align-center elementor-widget__width-auto elementor-widget-mobile__width-inherit elementor-absolute elementor-widget elementor-widget-button\" data-id=\"5a5a6495\" data-element_type=\"widget\" data-settings=\"{&quot;_position&quot;:&quot;absolute&quot;}\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/exa.net.uk\/knowledge-hub\/\" target=\"_blank\" rel=\"noopener\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-caret-left\"><\/i>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Knowledge Hub<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7497b427 elementor-widget__width-auto elementor-widget elementor-widget-heading\" data-id=\"7497b427\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Knowledge <span class=\"lightblue\">Hub<\/span><sup class=\"blog-tm\">TM<\/sup><span class=\"hub-image\"><img decoding=\"async\" src=\"https:\/\/exa.net.uk\/wp-content\/uploads\/2021\/02\/education.svg\" alt=\"\" title=\"\"><\/span><\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9963296 elementor-widget__width-initial elementor-widget elementor-widget-theme-post-title elementor-page-title elementor-widget-heading\" data-id=\"9963296\" data-element_type=\"widget\" data-widget_type=\"theme-post-title.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">What is DNS?<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7744c03d elementor-widget__width-initial elementor-hidden-phone elementor-widget elementor-widget-spacer\" data-id=\"7744c03d\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11f23a5b elementor-mobile-align-center elementor-align-center elementor-widget__width-initial post-info elementor-widget elementor-widget-post-info\" data-id=\"11f23a5b\" data-element_type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-ba9c996 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t<span class=\"elementor-post-info__item-prefix\">Date Posted:<\/span>\n\t\t\t\t\t\t\t\t\t\t<time>29.06.2021<\/time>\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-a339c7b elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t<span class=\"elementor-post-info__item-prefix\">Written by:<\/span>\n\t\t\t\t\t\t\t\t\t\tExa Networks\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-26b042 elementor-widget__width-initial elementor-hidden-phone elementor-widget elementor-widget-spacer\" data-id=\"26b042\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-top-section elementor-element elementor-element-77a7851c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"77a7851c\" data-element_type=\"section\" id=\"main-article\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;5fc546a&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-3e37052\" data-id=\"3e37052\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d143d1a custom-posts elementor-widget elementor-widget-text-editor\" data-id=\"d143d1a\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p data-pm-slice=\"1 1 []\">Don\u2019t know what DNS is? Do not worry most people don\u2019t, yet we all use it every day without even realising!\u00a0<\/p><p>The domain name system (DNS) is effectively the telephone book of the internet. If you are lucky to be young enough to not know what a physical telephone book is, think about your mobile phone contacts list and how it matches your friends names and their numbers, so you never have to remember the 11 numbers to type.<\/p><p>DNS is a global directory for resources on the internet that matches <span class=\"fabric-editor-annotation\" data-mark-type=\"annotation\" data-mark-annotation-type=\"inlineComment\" data-id=\"8bbfc209-a1c9-4625-8dee-47c823294d0b\">devices<\/span> unique internet location, their numerical <a href=\"https:\/\/exa.net.uk\/what-is-an-ip-address\/\" target=\"_blank\" rel=\"noopener\">IP addresses<\/a>, to a memorable name, their domain names.<\/p><p>An IP address is a unique number given to a device that is connected to the internet, it is what allows devices to communicate with one another. As human we find it hard to remember numbers between 0 and 4.3 billion for IP version 4 or even worse 0 and 340 undecillion for IP version 6.<\/p><p>When we access websites, rather than having to type into a browser the IP of this computer (82.219.4.38 if you are curious) to navigate to the Exa Networks website, you can use its DNS name <a href=\"https:\/\/exa.net.uk\/\" target=\"_blank\" rel=\"noopener\">www.exa.net.uk<\/a>. The DNS infrastructure is used by your browser to tranparently translates the domain name to the IP address which then allows your browser to access this page.<\/p><p>The DNS therefore eliminates the need for you to even know about IP addresses, instead allowing you to search for and navigate internet resources by name.\u00a0<\/p><p>Domains usually contain information for more than one IP address so multiple names can be associated to a domain, such as www for web sites (world wide web) or smtp for e-mail (simple mail transport protocol).<\/p><p>As it would be impractical for all queries to go to one place, the answer provided to a name can also be different depending on where you are asking from.<\/p><p>So if for example you are based in the UK and search something on Google it is highly likely that your query will be sent to a different machine than if you did the same search in America. This not only prevents congestion on the machine but also reduces the amount of time it takes to receive your response.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-197989e elementor-widget elementor-widget-heading\" data-id=\"197989e\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">DNS caching <\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f8c8e66 custom-posts elementor-widget elementor-widget-text-editor\" data-id=\"f8c8e66\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p data-pm-slice=\"1 1 []\">When you visit a website the information is cached, both locally on your computer, and also on the internet, which speeds up the process for the next query and means the DNS doesn\u2019t have to find this information from scratch every time you request it.\u00a0<\/p><p>If you\u2019re like us then you\u2019ll search Google multiple times a day and when you open your browser and type the Google domain name into the address bar, your device will check if you\u2019ve visited that website previously and if so used the previously fetched information instead of re-requesting it.<\/p><p>Whereas, if you haven\u2019t visited the website before then the query will then be sent to the DNS to match with the IP address.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div data-dce-advanced-background-color=\"#009FE326\" class=\"elementor-element elementor-element-ee4b5d4 elementor-widget elementor-widget-text-editor\" data-id=\"ee4b5d4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Should you know more about DNS, the protocol is defined by a numbered technical reference document called an RFC, numbered 1035 in this case <a href=\"https:\/\/datatracker.ietf.org\/doc\/html\/rfc1035\" data-inline-card=\"\" data-card-data=\"\" target=\"_blank\" rel=\"noopener\"><span style=\"color: #3366ff;\">https:\/\/datatracker.ietf.org\/doc\/html\/rfc1035<\/span><\/a> but you will probably find it easier to read wikipedia for more information.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6077295 dce_masking-none elementor-widget elementor-widget-image\" data-id=\"6077295\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/exa.net.uk\/wp-content\/uploads\/2021\/03\/police-image.jpg\" title=\"\" alt=\"\" loading=\"lazy\">\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-46f50c2 elementor-widget__width-initial elementor-hidden-phone elementor-widget elementor-widget-spacer\" data-id=\"46f50c2\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"has_eae_slider elementor-section elementor-inner-section elementor-element elementor-element-6a0d3a9 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6a0d3a9\" data-element_type=\"section\" data-settings=\"{&quot;jet_parallax_layout_list&quot;:[{&quot;jet_parallax_layout_image&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;_id&quot;:&quot;62e95af&quot;,&quot;jet_parallax_layout_image_tablet&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_image_mobile&quot;:{&quot;url&quot;:&quot;&quot;,&quot;id&quot;:&quot;&quot;,&quot;size&quot;:&quot;&quot;},&quot;jet_parallax_layout_speed&quot;:{&quot;unit&quot;:&quot;%&quot;,&quot;size&quot;:50,&quot;sizes&quot;:[]},&quot;jet_parallax_layout_type&quot;:&quot;scroll&quot;,&quot;jet_parallax_layout_direction&quot;:null,&quot;jet_parallax_layout_fx_direction&quot;:null,&quot;jet_parallax_layout_z_index&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x&quot;:50,&quot;jet_parallax_layout_bg_x_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_x_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y&quot;:50,&quot;jet_parallax_layout_bg_y_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_y_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size&quot;:&quot;auto&quot;,&quot;jet_parallax_layout_bg_size_tablet&quot;:&quot;&quot;,&quot;jet_parallax_layout_bg_size_mobile&quot;:&quot;&quot;,&quot;jet_parallax_layout_animation_prop&quot;:&quot;transform&quot;,&quot;jet_parallax_layout_on&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}]}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-99aa5b6\" data-id=\"99aa5b6\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0b5765f next-read-section elementor-widget elementor-widget-heading\" data-id=\"0b5765f\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<p class=\"elementor-heading-title elementor-size-default\"><span class=\"lightblue\">Suggested<\/span> Next Read <span class=\"lightblue\"><i class=\"fas fa-caret-right\"><\/i><\/span><\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_eae_slider elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-fcf624d\" data-id=\"fcf624d\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f7dda00 custom-slider blog-slide custom-slider-green elementor-widget__width-initial elementor-widget elementor-widget-ucaddon_uc_card_post_carousel_blog\" data-id=\"f7dda00\" data-element_type=\"widget\" data-widget_type=\"ucaddon_uc_card_post_carousel_blog.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\n<!-- start Card Post Carousel - Blog -->\n\t\t<link id='font-awesome-css' href='https:\/\/edit.exa.net.uk\/wp-content\/plugins\/unlimited-elements-for-elementor\/assets_libraries\/font-awesome6\/fontawesome-all.min.css' type='text\/css' rel='stylesheet' >\n\t\t<link id='font-awesome-4-shim-css' href='https:\/\/edit.exa.net.uk\/wp-content\/plugins\/unlimited-elements-for-elementor\/assets_libraries\/font-awesome6\/fontawesome-v4-shims.min.css' type='text\/css' rel='stylesheet' >\n\t\t<link id='owl-carousel-css' href='https:\/\/edit.exa.net.uk\/wp-content\/plugins\/unlimited-elements-for-elementor\/assets_libraries\/owl-carousel\/assets\/owl.carousel.css' type='text\/css' rel='stylesheet' >\n\n<style>\/* widget: Card Post Carousel - Blog *\/\n\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 *{\n  box-sizing:border-box;\n}\n#uc_uc_card_post_carousel_blog_elementor_f7dda00{\n  position:relative;\n}\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .uc_image_carousel_content{\n\ttext-align:left;\n    display: flex;\n     flex-flow: column nowrap;\n}\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .ue_post_carousel_item\n{\n  overflow:hidden;\n  \n}\n\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .ue_post_btn_holder\n{\n  margin-top:auto;\n}\n\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .uc_more_btn{\n\n  display:inline-block;\n  text-align:center;\n  text-decoration:none;\n} \n\n.uc_overlay_image_carousel .uc_more_btn{\n  text-decoration:none;\n  display:inline-block;\n}\n\n.uc_overlay_image_carousel .uc_post_title{\n  font-size:21px;\n  text-decoration:none;\n}\n\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .owl-nav .owl-prev{\n    position:absolute;\n    left:-40px;\n    display:inline-block;\n    text-align:center;\n}\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .owl-nav .owl-next{\n  position:absolute;\n    right:-40px;\n  display:inline-block;\n  text-align:center;\n}\n\n\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .owl-dots {\noverflow:hidden;\ndisplay:false !important;\ntext-align:center;\n}\n\n#uc_uc_card_post_carousel_blog_elementor_f7dda00 .owl-dot {\nborder-radius:50%;\ndisplay:inline-block;\n}\n\n<\/style>\n\n<div class=\"uc_overlay_image_carousel\" id=\"uc_uc_card_post_carousel_blog_elementor_f7dda00\" style=\"direction:ltr;\">\n   <div class=\"uc_carousel owl-carousel owl-theme\">\n   \t\t<div class=\"uc_image_carousel_container_holder ue_post_carousel_item\">\n  <div 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-->\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-d689a1b elementor-widget__width-initial elementor-hidden-phone elementor-widget elementor-widget-spacer\" data-id=\"d689a1b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_eae_slider jet-sticky-column elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-8463383\" data-jet-settings=\"{&quot;id&quot;:&quot;8463383&quot;,&quot;sticky&quot;:true,&quot;topSpacing&quot;:155,&quot;bottomSpacing&quot;:50,&quot;stickyOn&quot;:[&quot;desktop&quot;,&quot;tablet&quot;]}\" data-id=\"8463383\" data-element_type=\"column\">\n\t\t\t<div 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Do not worry most people don\u2019t, yet we all use it every day without even realising!\u00a0 The domain name system (DNS) is effectively the telephone book of the internet. If you are lucky to be young enough to not know what a physical telephone book is, &#8230; <a title=\"What is DNS?\" class=\"read-more\" href=\"https:\/\/edit.exa.net.uk\/knowledge-hub\/computing\/what-is-dns\/\" aria-label=\"Read more about What is DNS?\">Read more<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"categories":[40,69,70],"tags":[9],"class_list":["post-2853","post","type-post","status-publish","format-standard","hentry","category-computing","category-business","category-education","tag-2-min-read"],"_links":{"self":[{"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/posts\/2853"}],"collection":[{"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/comments?post=2853"}],"version-history":[{"count":13,"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/posts\/2853\/revisions"}],"predecessor-version":[{"id":24572,"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/posts\/2853\/revisions\/24572"}],"wp:attachment":[{"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/media?parent=2853"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/categories?post=2853"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/edit.exa.net.uk\/wp-json\/wp\/v2\/tags?post=2853"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}