{"id":206388,"date":"2025-03-29T06:54:07","date_gmt":"2025-03-29T06:54:07","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=206388"},"modified":"2025-03-29T06:54:10","modified_gmt":"2025-03-29T06:54:10","slug":"which-of-the-following-statements-about-dns-are-correct","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/29\/which-of-the-following-statements-about-dns-are-correct\/","title":{"rendered":"Which of the following statements about DNS are correct"},"content":{"rendered":"\n

Which of the following statements about DNS are correct?<\/p>\n\n\n\n

A typical answer from a top level domain name includes the IP address of the requested domain name.
DNS provides one single service: to translate a name to an IP address.
A DNS server uses caching to quickly answer similar questions.
A local server helps other computer to ask their DNS questions.
A typical answer from an authoritative domain server has the name of the name server that can finally answer the question.
A root server performs recursive lookups on behalf of the requesting clients.<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

Correct Statements:<\/strong><\/h3>\n\n\n\n
    \n
  1. A DNS server uses caching to quickly answer similar questions.<\/strong> \u2705<\/li>\n<\/ol>\n\n\n\n
      \n
    • DNS servers cache responses to reduce the time needed to resolve frequently requested domain names. This improves performance and reduces network traffic.<\/li>\n<\/ul>\n\n\n\n
        \n
      1. A typical answer from an authoritative domain server has the name of the name server that can finally answer the question.<\/strong> \u2705<\/li>\n<\/ol>\n\n\n\n
          \n
        • If the authoritative server doesn\u2019t have the final answer, it will return the name of the next server in the hierarchy that can provide the requested IP address.<\/li>\n<\/ul>\n\n\n\n

          Incorrect Statements:<\/strong><\/h3>\n\n\n\n
            \n
          1. “A typical answer from a top-level domain name includes the IP address of the requested domain name.”<\/strong> \u274c<\/li>\n<\/ol>\n\n\n\n
              \n
            • TLD (Top-Level Domain) servers do not return the final IP address. Instead, they provide the names of authoritative name servers responsible for the domain.<\/li>\n<\/ul>\n\n\n\n
                \n
              1. “DNS provides one single service: to translate a name to an IP address.”<\/strong> \u274c<\/li>\n<\/ol>\n\n\n\n
                  \n
                • DNS does more than just resolve names to IPs. It supports reverse lookups (IP to name), mail exchange (MX records), and service discovery.<\/li>\n<\/ul>\n\n\n\n
                    \n
                  1. “A local server helps other computers to ask their DNS questions.”<\/strong> \u274c<\/li>\n<\/ol>\n\n\n\n
                      \n
                    • A local DNS server primarily resolves queries for devices within a network but does not necessarily help others beyond its network.<\/li>\n<\/ul>\n\n\n\n
                        \n
                      1. “A root server performs recursive lookups on behalf of the requesting clients.”<\/strong> \u274c<\/li>\n<\/ol>\n\n\n\n
                          \n
                        • Root servers only direct clients to the appropriate TLD servers. Recursive lookups are handled by resolvers (like ISP DNS resolvers).<\/li>\n<\/ul>\n\n\n\n
                          \n\n\n\n
                          \"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"

                          Which of the following statements about DNS are correct? A typical answer from a top level domain name includes the IP address of the requested domain name.DNS provides one single service: to translate a name to an IP address.A DNS server uses caching to quickly answer similar questions.A local server helps other computer to ask […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-206388","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/206388","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=206388"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/206388\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=206388"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=206388"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=206388"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}