What would happen to an RDS (Relational Database Service) multi-Availability Zone deployment if the primary
DB instance fails?
A.
The IP of the primary DB Instance is switched to the standby DB Instance.
B.
A new DB instance is created in the standby availability zone.
C.
The canonical name record (CNAME) is changed from primary to standby.
D.
The RDS (Relational Database Service) DB instance reboots.
Explanation:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_RebootInstance.html
Hi, correct answer is C (not D).
See: http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html
Failover Process for Amazon RDS:
In the event of a planned or unplanned outage of your DB instance, Amazon RDS automatically switches to a standby replica in another Availability Zone if you have enabled Multi-AZ. The time it takes for the failover to complete depends on the database activity and other conditions at the time the primary DB instance became unavailable.
The failover mechanism automatically changes the DNS record of the DB instance to point to the standby DB instance. As a result, you will need to re-establish any existing connections to your DB instance.
Thanks,
Frank
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C
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C
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C
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Hi! I just took the AWS-SysOps exam few days ago and luckily passed with 90% marks (the passing score is 65% now). I had 55 single choice and multiple choice questions in total, most of them were single answer questions. And, questions on Monitoring and Metrics,
Deployment and Provisioning were not easy to answer, other questions on High Availability and Data Management and Analysis were very easy to get the correct answers.
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Good Luck, my cool guy!
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Yes! you passed luckily… your dumps are dumb!
Can you give exact answer for this question?
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Hello Ramesh,
The DNS endpoint will change during the failover process. And if at all it has been associated with CNAME then it will change the endpoint likely.
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C is correct.
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Its nonsense ya.. Answer is C!!!
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taking the eliminating wrong answers approach:
A is wrong, the IP address does not switch
B is wrong, the Multi-AZ already has a standby created in another AZ, already populated with replicated updates from master DB.
D is flat out wrong
C is the answer
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C
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