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A company's application on EC2 instances relies on a Single-AZ RDS for MySQL DB instance. The SysOps administrator needs to ensure failover to minimize downtime.
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Question 17 - SOA-C02 discussion

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A company uses an Amazon RDS DB instance for data storage for its web application. For disaster recovery purposes, a SysOps administrator has configured an AWS Lambda function that copies the daily DB snapshot to the us-west-2- Region.

The SysOps administrator must provide a custom DNS name, myexampledb, for the DB instance so that the company's developers do not need to update the application code if the DB snapshot must be restored in another Region. The company hosts its corporate domain, example.com, on Amazon Route 53.

Which solution will meet these requirements?

A.
Create a Route 53 alias record that maps myexampledb.example.com to the DB instance domain name. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the alias record to point to the new DB instance domain name.
Answers
A.
Create a Route 53 alias record that maps myexampledb.example.com to the DB instance domain name. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the alias record to point to the new DB instance domain name.
B.
Create a Route 53 CNAME record that maps myexampledb.example.com to the DB instance domain name. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the CNAME record to point to the new DB instance domain name.
Answers
B.
Create a Route 53 CNAME record that maps myexampledb.example.com to the DB instance domain name. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the CNAME record to point to the new DB instance domain name.
C.
Locate the IP address of the DB instance. Create a Route 53 A record that maps myexamplebd.example.com to the IP address. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the A record to point to the new DB instance IP address.
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C.
Locate the IP address of the DB instance. Create a Route 53 A record that maps myexamplebd.example.com to the IP address. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the A record to point to the new DB instance IP address.
D.
Locate the IP address of the DB instance. Create a Route 53 alias record that maps myexampledb.example.com to the IP address. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the alias record to point to the new DB instance IP address.
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D.
Locate the IP address of the DB instance. Create a Route 53 alias record that maps myexampledb.example.com to the IP address. Instruct the developers to refer to myexampledb.example.com in their application. After restoring the DB snapshot in us-west-2, update the alias record to point to the new DB instance IP address.
Suggested answer: D

Explanation:

Reference: https://www.amazonaws.cn/en/route53/faqs/

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asked 16/09/2024
Henny Smit
36 questions
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