{"id":620,"date":"2022-03-14T05:36:44","date_gmt":"2022-03-14T05:36:44","guid":{"rendered":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/aws-certified-database-specialty-question175\/"},"modified":"2022-03-14T05:36:44","modified_gmt":"2022-03-14T05:36:44","slug":"aws-certified-database-specialty-question175","status":"publish","type":"post","link":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/aws-certified-database-specialty-question175\/","title":{"rendered":"AWS Certified Database &#8211; Specialty &#8211; Question175"},"content":{"rendered":"<div class=\"question\">An online advertising company is implementing an application that displays advertisements to its users. The application uses an Amazon DynamoDB table as a data store. The application also uses a DynamoDB Accelerator (DAX) cluster to cache its reads. Most of the reads are from the GetItem query and the BatchGetItem query. Consistency of reads is not a requirement for this application.<br \/>\nUpon deployment, the application cache is not performing as expected. Specific strongly consistent queries that run against the DAX cluster are taking many milliseconds to respond instead of microseconds.<br \/>\nHow can the company improve the cache behavior to increase application performance?<br \/><strong><br \/>A.<\/strong> Increase the size of the DAX cluster.<br \/><strong>B.<\/strong> Configure DAX to be an item cache with no query cache<br \/><strong>C.<\/strong> Use eventually consistent reads instead of strongly consistent reads.<br \/><strong>D.<\/strong> Create a new DAX cluster with a higher TTL for the item cache.<\/div>\n<p><\/p>\n<style> .hidden-div{ display:none } <\/style>\n<p>\t\t\t\t\t\t\t<button onclick=\"getElementById('hidden-div').style.display = 'block'\"> Show Answer <\/button> <button onclick=\"getElementById('hidden-div').style.display = 'none'\">Hide Answer<\/button><\/p>\n<div class=\"hidden-div\" id=\"hidden-div\"><span style=\"\"><\/p>\n<div class=\"answer\">Correct Answer: <strong>C<\/strong><\/div>\n<p><strong>Explanation:<\/strong> <\/p>\n<div class=\"explanation\">\nReference: <a href=\"https:\/\/docs.aws.amazon.com\/amazondynamodb\/latest\/developerguide\/HowItWorks.ReadConsistency.html\" title=\"External link\" rel=\"nofollow noopener\" target=\"_blank\">https:\/\/docs.aws.amazon.com\/amazondynamodb\/latest\/developerguide\/Ho&#8230;<\/a><\/div>\n<p><\/strong><\/span> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>An online advertising company is implementing an application that displays advertisements to its users. The application uses an Amazon DynamoDB table as a data store. The application also uses a DynamoDB Accelerator (DAX) cluster to cache its reads. Most of the reads are from the GetItem query and the BatchGetItem query. Consistency of reads is [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[3,178],"class_list":["post-620","post","type-post","status-publish","format-standard","hentry","category-aws-certified-database-specialty","tag-aws-certified-database-specialty","tag-question-175"],"_links":{"self":[{"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/posts\/620","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/comments?post=620"}],"version-history":[{"count":0,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/posts\/620\/revisions"}],"wp:attachment":[{"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/media?parent=620"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/categories?post=620"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/tags?post=620"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}