{"id":22719,"date":"2024-02-26T13:11:00","date_gmt":"2024-02-26T11:11:00","guid":{"rendered":"https:\/\/hostkoss.com\/b\/?p=22719"},"modified":"2024-07-05T13:30:37","modified_gmt":"2024-07-05T10:30:37","slug":"how-dns-works","status":"publish","type":"post","link":"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/","title":{"rendered":"Ce este DNS \u0219i cum func\u021bioneaz\u0103?"},"content":{"rendered":"\n<p><strong>DNS este un protocol<\/strong> care permite calculatoarelor s\u0103 comunice \u00eentre ele pe internet. De asemenea, este utilizat pentru direc\u021bionarea cererilor de la clien\u021bi la servere \u0219i invers.<\/p>\n\n\n\n<p><strong>DNS pot fi utilizate<\/strong> \u00een diferite moduri, \u00een func\u021bie de aplica\u021bie, dar sunt utilizate \u00een principal de utilizatorii de internet pentru a g\u0103si site-uri web, a rezolva nume \u0219i a comunica cu acestea.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u0449\u043e-\u0442\u0430\u043a\u0435-dns-\u0441\u0435\u0440\u0432\u0435\u0440-\u0456-\u043d\u0430\u0432\u0456\u0449\u043e-\u0432\u0456\u043d-\u043c\u0435\u043d\u0456-\u043f\u043e\u0442\u0440\u0456\u0431\u043d\u0438\u0439\">Ce este un server DNS \u0219i de ce am nevoie de unul?<\/h2>\n\n\n\n<p><strong>Serverele DNS<\/strong> sunt o parte important\u0103 a internetului. Acestea v\u0103 permit s\u0103 accesa\u021bi internetul \u0219i s\u0103 v\u0103 asigura\u021bi c\u0103 computerul dumneavoastr\u0103 este \u00eentotdeauna disponibil.<\/p>\n\n\n\n<p><strong>Serverele DNS sunt importante pentru persoanele<\/strong> care doresc s\u0103 utilizeze internetul, precum \u0219i pentru companiile care trebuie s\u0103 \u00ee\u0219i poat\u0103 contacta clien\u021bii. <strong>Serverele DNS<\/strong> se ocup\u0103 de conversia <a href=\"https:\/\/hostkoss.com\/b\/ro\/what-is-the-site-domain\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>numelor de domenii<\/strong><\/a> \u00een <a href=\"https:\/\/hostkoss.com\/b\/ro\/ip-address\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>adrese IP<\/strong><\/a> \u0219i de direc\u021bionarea acestora prin re\u021beaua corespunz\u0103toare. Acest lucru se face cu ajutorul unui server central numit server de nume, care se ocup\u0103 de toate detaliile \u0219i se asigur\u0103 c\u0103 toate cererile f\u0103cute de clien\u021bi ajung la serverul potrivit. <strong><a href=\"https:\/\/hostkoss.com\/billing\/cart.php?a=add&amp;domain=register&amp;language=romanian\" target=\"_blank\" rel=\"noreferrer noopener\">Cump\u0103ra\u021bi un domeniu ieftin<\/a><\/strong><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\" style=\"font-size:19px\">\n<p><strong>Principalul scop al serverelor DNS<\/strong> este de a traduce un nume de domeniu \u00eentr-o adres\u0103 IP, ceea ce permite utilizatorilor cu computere diferite pe re\u021bele diferite din aceea\u0219i re\u021bea s\u0103 comunice \u00eentre ei f\u0103r\u0103 s\u0103 \u0219tie ce computer folosesc sau la ce tip de re\u021bea apar\u021bin.<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u0449\u043e-\u0442\u0430\u043a\u0435-\u0437\u0430\u043f\u0438\u0441\u0438-dns\">Ce sunt \u00eenregistr\u0103rile DNS<\/h2>\n\n\n\n<p><strong>Pentru a \u00een\u021belege valoarea \u00eenregistr\u0103rilor DNS<\/strong>, trebuie s\u0103 \u00een\u021belegem mai \u00eent\u00e2i ce sunt acestea \u0219i cum sunt utilizate.<\/p>\n\n\n\n<p><strong>DNS <\/strong>este un sistem de nume de domeniu care permite utilizatorilor s\u0103 se conecteze la internet <strong>utiliz\u00e2nd adresa lor IP<\/strong> (adresa numeric\u0103 atribuit\u0103 de furnizorul dumneavoastr\u0103 de servicii internet). De <strong>exemplu, dac\u0103 ave\u021bi o adres\u0103 IP de 192.168.1.1,<\/strong> computerul dvs. se poate conecta la internet folosind aceast\u0103 adres\u0103 IP mai degrab\u0103 dec\u00e2t loca\u021bia sa fizic\u0103 real\u0103 <strong>(de exemplu, &#8220;192.168.1<\/strong>&#8220;).<\/p>\n\n\n\n<p>Atunci c\u00e2nd introduce\u021bi<strong>&#8220;www<\/strong>&#8221; \u00een bara de adrese a browserului sau a motorului de c\u0103utare, acesta deschide automat o pagin\u0103 web \u00een loca\u021bia respectiv\u0103 de pe internet numit\u0103<strong>&#8220;www<\/strong>&#8220;. Acest lucru se datoreaz\u0103 faptului c\u0103 <strong>DNS <\/strong>rezolv\u0103 toate <strong>URL-urile<\/strong> la loca\u021bia lor fizic\u0103 real\u0103 <strong>(de exemplu, &#8220;www&#8221; pentru www<\/strong> ). Atunci c\u00e2nd tasta\u021bi<strong>&#8220;google<\/strong>&#8221; \u00een bara de adrese a browserului dvs., acesta deschide automat o pagin\u0103 web pe site-ul oficial <strong><a href=\"http:\/\/google.com.ua\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Google denumit\u0103.<\/a><\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u0449\u043e-\u0442\u0430\u043a\u0435-dns-\u043a\u0435\u0448-\u0442\u0430-\u0439\u043e\u0433\u043e-\u0432\u0430\u0436\u043b\u0438\u0432\u0456\u0441\u0442\u044c-\u0434\u043b\u044f-\u0432\u0430\u0448\u043e\u0433\u043e-\u0441\u0430\u0439\u0442\u0443\">Ce este o cache DNS \u0219i importan\u021ba sa pentru site-ul dvs. web<\/h2>\n\n\n\n<p>Un <strong>cache DNS<\/strong> este un <strong>depozit inteligent de date<\/strong> utilizat pentru a accelera recuperarea paginilor web. Acesta stocheaz\u0103 rapid cele mai frecvent vizitate pagini web \u0219i v\u0103 permite s\u0103 le accesa\u021bi rapid. Un cache DNS poate fi utilizat pentru o varietate de scopuri. Aceasta poate fi utilizat\u0103 pentru a stoca cele mai importante pagini de pe un site web.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u0449\u043e-\u0442\u0430\u043a\u0435-\u0444\u0430\u0439\u043b-hosts-\u0456-\u0447\u043e\u043c\u0443-\u043f\u0440\u043e-\u043d\u044c\u043e\u0433\u043e-\u043f\u043e\u0442\u0440\u0456\u0431\u043d\u043e-\u0434\u0431\u0430\u0442\u0438\">Ce este fi\u0219ierul hosts \u0219i de ce trebuie s\u0103 ave\u021bi grij\u0103 de el?<\/h2>\n\n\n\n<p><strong>Acesta este un fi\u0219ier<\/strong> localizat pe server care con\u021bine informa\u021bii despre sistemul de operare \u0219i serviciile acestuia. Informa\u021biile din acest fi\u0219ier con\u021bin tot felul de informa\u021bii despre sistemul de operare, inclusiv ce versiune ruleaz\u0103, ce servicii (cum ar fi Apache) ruleaz\u0103 \u0219i multe altele. Acesta include, de asemenea, informa\u021bii de configurare pentru toate tipurile de aplica\u021bii instalate pe server.<\/p>\n\n\n\n<p><strong>Fi\u0219ierul hosts<\/strong> este un instrument foarte util pentru administratorii de re\u021bea. Acesta poate fi utilizat pentru a restric\u021biona accesul la fi\u0219iere \u0219i servicii pe un computer local, pe un server \u0219i pentru a redirec\u021biona conexiunile de intrare.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faqs-\u043f\u043e\u0448\u0438\u0440\u0435\u043d\u0456-\u0437\u0430\u043f\u0438\u0442\u0430\u043d\u043d\u044f\">FAQ (\u00eentreb\u0103ri frecvente)<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1720089829095\"><strong class=\"schema-faq-question\"><strong>Cum afecteaz\u0103 DNS performan\u021ba site-ului?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>DNS joac\u0103 un rol crucial \u00een performan\u021ba site-urilor web prin traducerea numelor de domeniu \u00een adrese IP \u0219i asigurarea unei comunic\u0103ri eficiente \u00eentre clien\u021bi \u0219i servere. Un DNS configurat \u0219i gestionat optim poate minimiza timpul de rezolu\u021bie, reduce laten\u021ba \u0219i \u00eembun\u0103t\u0103\u021bi experien\u021ba general\u0103 a site-ului web.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720089840801\"><strong class=\"schema-faq-question\"><strong>DNS poate fi piratat?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>De\u0219i DNS este \u00een mod inerent rezistent, acesta nu este imun la amenin\u021b\u0103rile cibernetice. Deturnarea DNS, otr\u0103virea cache-ului \u0219i atacurile DDoS (distributed denial-of-service) sunt toate tactici folosite de atacatori pentru a compromite integritatea DNS. Implementarea unor m\u0103suri de securitate puternice, cum ar fi DNSSEC, \u0219i monitorizarea periodic\u0103 pot reduce aceste riscuri.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720089852910\"><strong class=\"schema-faq-question\"><strong>Care este importan\u021ba TTL \u00een DNS?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>Time to live (TTL) este un parametru critic \u00een DNS care determin\u0103 durata de via\u021b\u0103 a \u00eenregistr\u0103rilor din cache. Prin setarea TTL, administratorii pot controla c\u00e2t timp sunt stocate informa\u021biile DNS pe serverele de caching \u00eenainte de a fi actualizate din surse autorizate. Acest lucru contribuie la optimizarea performan\u021bei DNS \u0219i asigur\u0103 actualiz\u0103ri \u00een timp util.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720089865430\"><strong class=\"schema-faq-question\"><strong>Cum sprijin\u0103 DNS echilibrarea sarcinii?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>Echilibrarea sarcinii bazat\u0103 pe DNS distribuie traficul de intrare pe mai multe servere pentru a optimiza utilizarea resurselor \u0219i a \u00eembun\u0103t\u0103\u021bi fiabilitatea. Prin configurarea \u00eenregistr\u0103rilor DNS cu adrese IP multiple corespunz\u0103toare grupurilor de servere de echilibrare a sarcinii, organiza\u021biile pot ob\u021bine rezilien\u021b\u0103 \u0219i scalabilitate pentru serviciile lor online.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720089878501\"><strong class=\"schema-faq-question\"><strong>Ce rol joac\u0103 DNS \u00een livrarea e-mailurilor?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>DNS este indispensabil \u00een livrarea de e-mail, asigur\u00e2nd c\u0103 numele de domeniu ale serverelor de e-mail sunt rezolvate la adresele lor IP respective. Cu ajutorul \u00eenregistr\u0103rilor DNS MX (Mail Exchange), expeditorii pot identifica serverele de po\u0219t\u0103 electronic\u0103 responsabile cu prelucrarea mesajelor primite, ceea ce asigur\u0103 rutarea \u0219i livrarea eficient\u0103 pe internet.<\/em><\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1720089890231\"><strong class=\"schema-faq-question\"><strong>Cum pot optimiza \u00eentreprinderile performan\u021ba DNS pentru o audien\u021b\u0103 global\u0103?<\/strong><\/strong> <p class=\"schema-faq-answer\"><em>\u00centreprinderile pot optimiza performan\u021ba DNS pentru un public global utiliz\u00e2nd strategii precum rutarea Anycast, integrarea CDN \u0219i rezolu\u021bia DNS geo-fencing. Prin distribuirea strategic\u0103 a infrastructurii DNS \u0219i minimizarea laten\u021bei, organiza\u021biile pot asigura o experien\u021b\u0103 de navigare f\u0103r\u0103 \u00eentreruperi pentru utilizatorii din \u00eentreaga lume.<\/em><\/p> <\/div> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>DNS este un protocol care permite calculatoarelor s\u0103 comunice \u00eentre ele pe internet. De asemenea, este utilizat pentru direc\u021bionarea cererilor de la clien\u021bi la servere&#8230;<\/p>\n","protected":false},"author":1,"featured_media":22710,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1683],"tags":[],"class_list":["post-22719","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-domains-dns"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.4 (Yoast SEO v25.4) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ce este DNS \u0219i cum func\u021bioneaz\u0103? &#8212; hostkoss blog<\/title>\n<meta name=\"description\" content=\"Ce este DNS (Domain Name System). Afla\u021bi despre principiile de baz\u0103 ale sistemului de nume de domeniu (DNS) \u0219i cum func\u021bioneaz\u0103 acesta.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ce este DNS \u0219i cum func\u021bioneaz\u0103? &#8212; hostkoss blog\" \/>\n<meta property=\"og:description\" content=\"Ce este DNS (Domain Name System). 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Afla\u021bi care sunt principiile de baz\u0103 ale sistemului de nume de domeniu (DNS) \u0219i cum func\u021bioneaz\u0103 acesta.\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2024\/02\/hostkoss-blog-how-dns-works-hostkoss.com_-700x368.webp\" \/>\n<meta name=\"twitter:creator\" content=\"@hostkoss\" \/>\n<meta name=\"twitter:site\" content=\"@hostkoss\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Andrii Kostashchuk\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/\"},\"author\":{\"name\":\"Andrii Kostashchuk\",\"@id\":\"https:\/\/hostkoss.com\/b\/#\/schema\/person\/29139467da980461cf9aabb9db0582a1\"},\"headline\":\"Ce este DNS \u0219i cum func\u021bioneaz\u0103?\",\"datePublished\":\"2024-02-26T11:11:00+00:00\",\"dateModified\":\"2024-07-05T10:30:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/\"},\"wordCount\":982,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/hostkoss.com\/b\/#organization\"},\"image\":{\"@id\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2024\/02\/hostkoss-blog-how-dns-works-hostkoss.com_.webp\",\"articleSection\":[\"Cele mai bune articole \u0219i ghiduri despre domenii \u0219i DNS\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/\",\"url\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/\",\"name\":\"Ce este DNS \u0219i cum func\u021bioneaz\u0103? &#8212; hostkoss blog\",\"isPartOf\":{\"@id\":\"https:\/\/hostkoss.com\/b\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/hostkoss.com\/b\/ro\/how-dns-works\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/hostkoss.com\/b\/wp-content\/uploads\/2024\/02\/hostkoss-blog-how-dns-works-hostkoss.com_.webp\",\"datePublished\":\"2024-02-26T11:11:00+00:00\",\"dateModified\":\"2024-07-05T10:30:37+00:00\",\"description\":\"Ce este DNS (Domain Name System). 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