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Exam AWS Certified SysOps Administrator - Associate topic 1 question 335 discussion

Exam question from Amazon's AWS Certified SysOps Administrator - Associate
Question #: 335
Topic #: 1
[All AWS Certified SysOps Administrator - Associate Questions]

A company has applications that process transaction requests multiple times each minute. The applications write transaction data to a single Amazon RDS DB instance. As the company begins to process more transactions, the company becomes concerned that it has no failover solution in place for disaster recovery (DR). The company needs the DB instance to fail over automatically without losing any committed transactions.

Which solution will meet these requirements?

  • A. Create an RDS read replica in the same AWS Region. Configure an AWS Lambda function to promote the replica as the primary DB instance during a DR scenario.
  • B. Create an RDS read replica in a different AWS Region. Configure an AWS Lambda function to promote the replica as the primary DB instance during a DR scenario.
  • C. Modify the DB instance to be a Multi-AZ deployment.
  • D. Setup an Amazon CloudWatch alarm that monitors the DB instance memory utilization with a threshold greater than 90%. Invoke an AWS Lambda function to restart the DB instance.
Show Suggested Answer Hide Answer
Suggested Answer: C 🗳️
by Pete987 at June 30, 2023, 5:04 p.m.
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Rado_Piatek
3 weeks, 6 days ago
Selected Answer: C
Read replicas are not the best option for failover, and D is just BAD.
upvoted 1 times
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tgv
8 months, 1 week ago
Selected Answer: C
RDS Multi-AZ for failover instantly.
upvoted 2 times
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Benly
1 year, 1 month ago
Selected Answer: C
Keyword is "Without losing any committed transactions." The RDS uses asyn for replicas, so there is a risk for heavy writing load database.
upvoted 1 times
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callspace
1 year, 2 months ago
Selected Answer: C
C It is. can't be B. Because the company needs the DB instance to fail over automatically without losing any committed transactions.
upvoted 2 times
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TwinSpark
1 year, 2 months ago
Selected Answer: C
https://docs.aws.amazon.com/whitepapers/latest/disaster-recovery-workloads-on-aws/disaster-recovery-is-different-in-the-cloud.html https://aws.amazon.com/rds/features/multi-az/?nc1=h_ls
upvoted 1 times
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wh1t4k3r
1 year, 2 months ago
Multi-AZ should not be used for disaster recovery purposes. If the correct answer is really C, AWS is contradicting it's own guides: https://aws.amazon.com/pt/blogs/database/implementing-a-disaster-recovery-strategy-with-amazon-rds/
upvoted 1 times
wh1t4k3r
1 year, 2 months ago
Still, B would not work since it is not automatic
upvoted 1 times
TwinSpark
1 year, 2 months ago
with multi AZ failover support is automatic https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html the guied on aws Blobg are just guide, they can be not the best solution, but just a solution. I Go for multi az: https://docs.aws.amazon.com/whitepapers/latest/disaster-recovery-workloads-on-aws/disaster-recovery-is-different-in-the-cloud.html https://aws.amazon.com/rds/features/multi-az/?nc1=h_ls
upvoted 1 times
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Christina666
1 year, 4 months ago
Selected Answer: B
DR Failover-> different region-> RDS replicas-> use lambda function to promote or Route53 health check failover feature HA-> Multi-AZ-> sigle region, not use in Disaster Recovery
upvoted 3 times
[Removed]
1 year, 4 months ago
Keyword is "Without losing any committed transactions." AWS Lambda function will need time to process the DB promotion. Multi-AZ is design for HA.
upvoted 4 times
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mh8
1 year, 4 months ago
Selected Answer: C
C is the most appropriate of all the four choices.
upvoted 2 times
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[Removed]
1 year, 5 months ago
CCCCCCCCCCCCCCCCC
upvoted 2 times
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Creature
1 year, 5 months ago
Selected Answer: C
Concur with C. Refer to this document: https://aws.amazon.com/rds/features/multi-az/
upvoted 2 times
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Pete987
1 year, 5 months ago
Selected Answer: C
C: Multi-AZ for failover
upvoted 1 times
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C (25%)
B (20%)
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