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Exam AWS Certified Solutions Architect - Associate SAA-C02 All Questions

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Exam AWS Certified Solutions Architect - Associate SAA-C02 topic 1 question 423 discussion

Exam question from Amazon's AWS Certified Solutions Architect - Associate SAA-C02
Question #: 423
Topic #: 1
[All AWS Certified Solutions Architect - Associate SAA-C02 Questions]

A team has an application that detects new objects being uploaded into an Amazon S3 bucket. The uploads trigger AWS Lambda function to write object metadata into an Amazon DynamoDB table and an Amazon RDS for PostgreSQL database.
Which action should the team take to ensure high availability?

  • A. Enable Cross-Region Replication in the S3 bucket.
  • B. Create a Lambda function for each Availability Zone the application is deployed in.
  • C. Enable Multi-AZ on the RDS for PostgreSQL database.
  • D. Create a DynamoDB stream for the DynamoDB table.
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Suggested Answer: C 🗳️
by jkwek at May 1, 2021, 7:02 a.m.
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Lolo_T
Highly Voted 3 years, 7 months ago
Answer is C.
upvoted 21 times
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walkwolf3
Highly Voted 3 years, 7 months ago
A. S3 has redundancy provided by AWS. Amazon S3 storage classes replicate their data on more than three Availability Zone (except for S3 One Zone-Infrequent Access). Amazon S3 maintains redundancy even within one of the facilities in a single Availability Zone. For example, Amazon S3 replicates data across multiple disks, so even if one of them fails, customers can still access their data with no downtime. So it does not need high availability. https://aws.amazon.com/blogs/storage/architecting-for-high-availability-on-amazon-s3/ B. It's not about high availability. C. It's the weakest point, and looks right. D. DynamoDB data is stored on solid-state disks (SSDs) and is automatically replicated across multiple Availability Zones in an AWS Region, providing built-in high availability and data durability. So it's not the answer. https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Introduction.html
upvoted 14 times
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Karthikeyan_nick
Most Recent 3 years, 1 month ago
Question is not clear.... Given 4 different resources and generally says to increase availability means??? which availability???
upvoted 7 times
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Goozian
3 years, 7 months ago
Since Data is being stored into DynamoDB and RDS at the same time, so it provides HA at the same time. Hence, ans should be "A" as if one region completely lost, we still have data.
upvoted 5 times
DS01
3 years, 7 months ago
Cross region replication is for disaster recovery. Please correct me if my understanding is not correct.
upvoted 3 times
zehnminuten
3 years, 2 months ago
Or here from AWS: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html
upvoted 1 times
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andriikor
3 years, 7 months ago
And what about Dynamo availability, C is only about Postrges DB?
upvoted 4 times
letmein2
3 years, 7 months ago
All of your data is stored on solid-state disks (SSDs) and is automatically replicated across multiple Availability Zones in an AWS Region, providing built-in high availability and data durability. https://docs.amazonaws.cn/en_us/amazondynamodb/latest/developerguide/Introduction.html
upvoted 1 times
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swadeey
3 years, 6 months ago
Since DynamoDB automatically spreads data, worth mentioning is it is written Amazon RDS not Multi-Az RDS so that's the weakest link
upvoted 2 times
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Ash_c02
3 years, 7 months ago
https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Introduction.html DynamoDB automatically spreads the data and traffic for your tables over a sufficient number of servers to handle your throughput and storage requirements, while maintaining consistent and fast performance. All of your data is stored on solid-state disks (SSDs) and is automatically replicated across multiple Availability Zones in an AWS Region, providing built-in high availability and data durability. You can use global tables to keep DynamoDB tables in sync across AWS Regions
upvoted 3 times
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syu31svc
3 years, 7 months ago
This is C for correct
upvoted 3 times
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jkwek
3 years, 7 months ago
Answer is C. Multi availability zones for DB is correct.
upvoted 5 times
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