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Exam AWS Certified Database - Specialty topic 1 question 28 discussion

Exam question from Amazon's AWS Certified Database - Specialty

Question #: 28
Topic #: 1

[All AWS Certified Database - Specialty Questions]

A company with branch offices in Portland, New York, and Singapore has a three-tier web application that leverages a shared database. The database runs on
Amazon RDS for MySQL and is hosted in the us-west-2 Region. The application has a distributed front end deployed in the us-west-2, ap-southheast-1, and us- east-2 Regions.
This front end is used as a dashboard for Sales Managers in each branch office to see current sales statistics. There are complaints that the dashboard performs more slowly in the Singapore location than it does in Portland or New York. A solution is needed to provide consistent performance for all users in each location.
Which set of actions will meet these requirements?

A. Take a snapshot of the instance in the us-west-2 Region. Create a new instance from the snapshot in the ap-southeast-1 Region. Reconfigure the ap- southeast-1 front-end dashboard to access this instance.
B. Create an RDS read replica in the ap-southeast-1 Region from the primary RDS DB instance in the us-west-2 Region. Reconfigure the ap-southeast-1 front- end dashboard to access this instance.
C. Create a new RDS instance in the ap-southeast-1 Region. Use AWS DMS and change data capture (CDC) to update the new instance in the ap-southeast-1 Region. Reconfigure the ap-southeast-1 front-end dashboard to access this instance.
D. Create an RDS read replica in the us-west-2 Region where the primary instance resides. Create a read replica in the ap-southeast-1 Region from the read replica located on the us-west-2 Region. Reconfigure the ap-southeast-1 front-end dashboard to access this instance.

Show Suggested Answer

Suggested Answer: B 🗳️

by [deleted] at July 12, 2020, 7:16 p.m.

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BillyMadison

Highly Voted 3 years, 8 months ago

Leaning to B. https://aws.amazon.com/rds/features/read-replicas/ "Amazon RDS Read Replicas provide enhanced performance and durability for RDS database (DB) instances. They make it easy to elastically scale out beyond the capacity constraints of a single DB instance for read-heavy database workloads. You can create one or more replicas of a given source DB Instance and serve high-volume application read traffic from multiple copies of your data, thereby increasing aggregate read throughput. "

upvoted 20 times

khchan123

3 years ago

Agree it's B.

upvoted 1 times

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[Removed]

Highly Voted 3 years, 8 months ago

If they go with A, how do they keep the databases in sync? B for me

upvoted 6 times

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NishithShah

Most Recent 1 year, 6 months ago

Selected Answer: B

B is correct.

upvoted 1 times

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Sathish_dbs

1 year, 8 months ago

apparently I need to now geography as well that Singapore is AP region

upvoted 1 times

2 years, 11 months ago

You can create read replication from a already existing replica, but the replication lag will be high. So D is operationally possible but replication lag will be high. So correct answer is B.

upvoted 1 times

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ryuhei

2 years, 11 months ago

Selected Answer: B

Answer:B

upvoted 1 times

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novice_expert

3 years, 1 month ago

Selected Answer: B

https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_ReadRepl.XRgn.html You can create replicas through Region same way as in same region Create an RDS read replica in the ap-southeast-1 Region from the primary RDS DB instance in the us-west-2 Region. Reconfigure the ap-southeast-1 front- end dashboard to access this instance.

upvoted 1 times

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AriraAWS

3 years, 4 months ago