{"id":2626,"date":"2019-08-28T09:41:09","date_gmt":"2019-08-28T09:41:09","guid":{"rendered":"https:\/\/www.testpreptraining.com\/tutorial\/?page_id=2626"},"modified":"2022-03-03T05:17:53","modified_gmt":"2022-03-03T05:17:53","slug":"route-53-2","status":"publish","type":"page","link":"https:\/\/www.testpreptraining.ai\/tutorial\/aws-certified-advanced-networking-specialty\/route-53-2\/","title":{"rendered":"Understanding Route 53"},"content":{"rendered":"<h3><section class=\"l-section wpb_row height_medium\"><div class=\"l-section-h i-cf\"><div class=\"g-cols vc_row type_default valign_top\"><div class=\"vc_col-sm-12 wpb_column vc_column_container\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"wpb_text_column\" ><div class=\"wpb_wrapper\"><p><strong><\/strong><\/h3>\n<h3><strong>Overview for Understanding Route 53<\/strong><\/h3>\n<ul class=\"wp-block-list\">\n<li>For understanding Route 53, you must understand it is an,\n<ul>\n<li>Authoritative<\/li>\n<\/ul>\n<ul>\n<li>highly available<\/li>\n<\/ul>\n<ul>\n<li>scalable<\/li>\n<\/ul>\n<ul>\n<li>cloud DNS service by AWS<\/li>\n<\/ul>\n<\/li>\n<li>maximum of 50 domain names<\/li>\n<li>compatible with IPv6<\/li>\n<li>control and optimize Traffic flow by routing traffic to best location as per latency\/geography\/target health, etc.<\/li>\n<li>Private DNS to manage private addresses, and resolution only if request from specific VPC.<\/li>\n<li>DNS failover feature\n<ul>\n<li>monitors resource health<\/li>\n<\/ul>\n<ul>\n<li>requests not routed to unhealthy resources<\/li>\n<\/ul>\n<ul>\n<li>Used to create backup sites.<\/li>\n<\/ul>\n<\/li>\n<li>single record\u00a0 can have multiple IPs<\/li>\n<li>DNS chang propagates within 60 seconds by Route 53 depending on network conditions<\/li>\n<li>Allows management of mappings between domain names and IP addresses (records)<\/li>\n<li>replies to \u201cqueries\u201d for translating domain names to IP address<\/li>\n<li>routing on port 53<\/li>\n<li>can register and manage new domains<\/li>\n<li>It monitors health of applications using configuration<\/li>\n<li>If health checks fail, it disables endpoint for time as per TTL<\/li>\n<li>Use ELB for load balancing<\/li>\n<li>Traffic Flow application\n<ul>\n<li>is a visual editor<\/li>\n<\/ul>\n<ul>\n<li>Can create complex routing policies spanning multiple regions and environments.<\/li>\n<\/ul>\n<\/li>\n<li>ELBs operate on domain names only, and not on fixed IPv4 or IPv6 addresses.<\/li>\n<li>Health checks and monitoring executes as per configuration for same.\n<ul>\n<li>No routing to unhealthy resources<\/li>\n<\/ul>\n<ul>\n<li>unhealthy endpoint get disable till it becomes healthy<\/li>\n<\/ul>\n<ul>\n<li>unhealthy is found as TTL\u00a0 usually 60 seconds<\/li>\n<\/ul>\n<ul>\n<li>ELBs can be used for load-balancing on target\u2019s health<\/li>\n<\/ul>\n<\/li>\n<li>Can register and manage new domains with Route 53.<\/li>\n<li>visual editor is provided, called Traffic Flow\n<ul>\n<li>create routing policies spanning multiple AZs and regions<\/li>\n<\/ul>\n<\/li>\n<li>Not possible to use an A Record to resolve to an ELB, use an Alias record<\/li>\n<\/ul>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img loading=\"lazy\" decoding=\"async\" width=\"523\" height=\"400\" class=\"wp-image-3994\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-267-523x400.png\" alt=\"\" srcset=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-267-523x400.png 523w, https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-267.png 582w\" sizes=\"auto, (max-width: 523px) 100vw, 523px\" \/><\/figure>\n<\/div>\n<h5><strong>Hosted Zones<\/strong><\/h5>\n<ul class=\"wp-block-list\">\n<li>To manage multiple domain names and records.<\/li>\n<li>Every hosted zone is created for second-level domain only<\/li>\n<li>can in turn contain records and sub-domains for that second-level domain.<\/li>\n<\/ul>\n<h5><strong>Aliases<\/strong><\/h5>\n<ul class=\"wp-block-list\">\n<li>Aliases can map to internal AWS resources, like ELB\u2019s, CloudFront distributions, Elastic Beanstalk environments, and S3 buckets.<\/li>\n<li>Unlike CNAMEs, Alias records exist only inside Route 53.<\/li>\n<li>They are not visible to resolvers.<\/li>\n<li>Alias of the zone apex can be created but not CNAME<\/li>\n<li>Alias queries are free.<\/li>\n<\/ul>\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"515\" height=\"276\" class=\"wp-image-3995\" src=\"https:\/\/www.testpreptraining.ai\/tutorial\/wp-content\/uploads\/2019\/09\/image-268.png\" alt=\"\" \/><\/figure>\n<p>\u00a0<\/p>\n<p><strong>Get ready to qualify\u00a0<a href=\"https:\/\/www.testpreptraining.ai\/aws-certified-advanced-networking-specialty-practice-exam\" target=\"_blank\" rel=\"noopener\">AWS Advanced Networking &#8211; Specialty Exam<\/a> with hundreds of practice exam and expert guidance. Try Now!<\/strong><\/p>\n<p>&nbsp;<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/section>","protected":false},"excerpt":{"rendered":"Overview for Understanding Route 53 For understanding Route 53, you must understand it is an, Authoritative highly available scalable cloud DNS service by AWS maximum of 50 domain names compatible with IPv6 control and optimize Traffic flow by routing traffic to best location as per latency\/geography\/target health, etc. Private DNS to manage private addresses, and...","protected":false},"author":1,"featured_media":0,"parent":2468,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"categories":[2],"tags":[7,438,237],"class_list":["post-2626","page","type-page","status-publish","hentry","category-amazon-aws","tag-aws","tag-big-data-specialty","tag-route-53"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Understanding Route 53 - Testprep Training Tutorials<\/title>\n<meta name=\"description\" content=\"Want to become AWS Certified Advanced Networking Specialty? 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