Review Mode Set 6 – AWS Certified Solutions Architect Associate

Question 1

What EC2 instance is cheaper?

On-Demand or Reserved?

Answer 1

Reserved instances is cheaper than On-demand instances for long term usage due to the discounts offered when purchasing reserved instances.

Question 2

How do you secure ALL in-flight data between RDS and an EC2?

Answer 2

-Download the RDS root CA cert. import it to EC2 and configure app to use SSL
-Force all connections to your DB instance to use SSL by setting the rds.force_ssl parameter to true. Once done, reboot your DB instance.

Question 3

What is a cost-effective, DR service that minimizes system outages with RPO of 60 seconds and RTO of 1 hour?

Answer 3

AWS Elastic Disaster Recovery (AWS DRS)

Question 4

What service identifies the language of text and can uncover sentiment?

Answer 4

Comprehend

Question 5

When setting up a webhook to trigger a lambda function, what is the LEAST overhead option?

Lambda Function URL as a webhook?
OR
API GW endpoint as a webhook?

Answer 5

Lambda Function URL.

API GW

Question 6

When should you move S3 objects from Standard into other storage classes? (Standard-IA, One Zone-IA)

Answer 6

If the storage time is over 30 days.

Question 7

For a HA strategy in CloudFront with EC2s as the origin, what is the best way to setup Origin failover?

Answer 7

2 EC2 in 2 different AZs. configure them to be a part of the same origin group.

Question 8

Can you have an ASG as an origin in CloudFront?

Answer 8

NO. A single ASG cannot be used as an origin.

You need one single EC2 for that.

Question 9

When you try to add new instances to an EC2 cluster placement group and receive a “insufficient capacity error “, what is the reason for this and how is it solved?

Answer 9

There may not be enough capacity on the current underlying hardware to support the new instances.

By stopping and restarting the instances, it might migrate the instances to hardware with more capacity.

Question 10

What is the only required section in a CF template?

Answer 10

Resources section.

Question 11

When a new IAM user is created with default settings in CLI, what needs to be done for this user to make API calls?

Answer 11

Create a set of Access Keys for the user and attach the necessary permissions

Question 12

What storage supports single-digit millisecond response times as a solution?

Answer 12

DynamoDB

Question 13

What service provides SMS text as part of a “multi-engagement marketing campaign”?

Answer 13

Amazon Pinpoint !!!

Question 14

What service provides conversational CHATBOTS??

Answer 14

AMAZON LEX!!