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Exam AWS Certified Solutions Architect - Associate SAA-C03 topic 1 question 464 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C03
Question #: 464
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C03 Questions]

A company hosts an online shopping application that stores all orders in an Amazon RDS for PostgreSQL Single-AZ DB instance. Management wants to eliminate single points of failure and has asked a solutions architect to recommend an approach to minimize database downtime without requiring any changes to the application code.

Which solution meets these requirements?

  • A. Convert the existing database instance to a Multi-AZ deployment by modifying the database instance and specifying the Multi-AZ option.
  • B. Create a new RDS Multi-AZ deployment. Take a snapshot of the current RDS instance and restore the new Multi-AZ deployment with the snapshot.
  • C. Create a read-only replica of the PostgreSQL database in another Availability Zone. Use Amazon Route 53 weighted record sets to distribute requests across the databases.
  • D. Place the RDS for PostgreSQL database in an Amazon EC2 Auto Scaling group with a minimum group size of two. Use Amazon Route 53 weighted record sets to distribute requests across instances.
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Suggested Answer: A 🗳️
by nosense at May 16, 2023, 8:10 p.m.
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Guru4Cloud
Highly Voted 1 year, 1 month ago
Selected Answer: A
A. Convert the existing database instance to a Multi-AZ deployment by modifying the database instance and specifying the Multi-AZ option
upvoted 5 times
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TariqKipkemei
Highly Voted 1 year, 3 months ago
Selected Answer: A
Eliminate single points of failure = Multi-AZ deployment
upvoted 5 times
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awsgeek75
Most Recent 8 months, 2 weeks ago
Selected Answer: A
A is correct but reason need to be clarified: https://aws.amazon.com/blogs/database/best-practices-for-converting-a-single-az-amazon-rds-instance-to-a-multi-az-instance/ The instance doesn't automatically convert to Multi-AZ immediately. By default it will convert at next maintenance window but you can convert it immediately. Compared to B this is much better. CD are too many changes overall so unsuitable.
upvoted 3 times
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antropaws
1 year, 3 months ago
Selected Answer: A
A) https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZSingleStandby.html#Concepts.MultiAZ.Migrating
upvoted 2 times
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Abrar2022
1 year, 3 months ago
"minimize database downtime" so why create a new DB just modify the existing one so no time is wasted.
upvoted 5 times
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cloudenthusiast
1 year, 4 months ago
Selected Answer: A
Compared to other solutions that involve creating new instances, restoring snapshots, or setting up replication manually, converting to a Multi-AZ deployment is a simpler and more streamlined approach with lower overhead. Overall, option A offers a cost-effective and efficient way to minimize database downtime without requiring significant changes or additional complexities.
upvoted 3 times
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Efren
1 year, 4 months ago
A for HA, but also read replica can convert itself to master if the master is down... so not sure if C?
upvoted 1 times
Efren
1 year, 4 months ago
Sorry, the Route 53 doesnt make sense to sent requests to RR , what if is a write?
upvoted 2 times
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nosense
1 year, 4 months ago
Selected Answer: A
i guess aa
upvoted 3 times
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