{"id":644,"date":"2022-03-14T05:37:09","date_gmt":"2022-03-14T05:37:09","guid":{"rendered":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/aws-certified-database-specialty-question199\/"},"modified":"2022-03-14T05:37:09","modified_gmt":"2022-03-14T05:37:09","slug":"aws-certified-database-specialty-question199","status":"publish","type":"post","link":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/aws-certified-database-specialty-question199\/","title":{"rendered":"AWS Certified Database &#8211; Specialty &#8211; Question199"},"content":{"rendered":"<div class=\"question\">A company has deployed an application that uses an Amazon RDS for MySQL DB cluster. The DB cluster uses three read replicas. The primary DB instance is an 8XL-sized instance, and the read replicas are each XL-sized instances.<br \/>\nUsers report that database queries are returning stale data. The replication lag indicates that the replicas are 5 minutes behind the primary DB instance. Status queries on the replicas show that the SQL_THREAD is 10 binlogs behind the IO_THREAD and that the IO_THREAD is 1 binlog behind the primary.<br \/>\nWhich changes will reduce the lag? (Choose two.)<br \/><strong><br \/>A.<\/strong> Deploy two additional read replicas matching the existing replica DB instance size.<br \/><strong>B.<\/strong> Migrate the primary DB instance to an Amazon Aurora MySQL DB cluster and add three Aurora Replicas.<br \/><strong>C.<\/strong> Move the read replicas to the same Availability Zone as the primary DB instance.<br \/><strong>D.<\/strong> Increase the instance size of the primary DB instance within the same instance class.<br \/><strong>E.<\/strong> Increase the instance size of the read replicas to the same size and class as the primary DB instance.<\/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>BC<\/strong><\/div>\n<p><\/strong><\/span> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>A company has deployed an application that uses an Amazon RDS for MySQL DB cluster. The DB cluster uses three read replicas. The primary DB instance is an 8XL-sized instance, and the read replicas are each XL-sized instances. Users report that database queries are returning stale data. The replication lag indicates that the replicas are [&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":[3,202],"class_list":["post-644","post","type-post","status-publish","format-standard","hentry","category-aws-certified-database-specialty","tag-aws-certified-database-specialty","tag-question-199"],"_links":{"self":[{"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/posts\/644","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=644"}],"version-history":[{"count":0,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/posts\/644\/revisions"}],"wp:attachment":[{"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/media?parent=644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/categories?post=644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Database-Specialty\/wp-json\/wp\/v2\/tags?post=644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}