TD EXAM 1 UPDATED ACTUAL QUESTIONS AND
CORRECT ANSWERS
Question:
1. A company hosted a web application in an Auto Scaling group of EC2 instances. The IT manager is
concerned about the over-provisioning of the resources that can cause higher operating costs. A Solutions
Architect has been instructed to create a cost-effective solution without affecting the performance of the
application.
Which dynamic scaling policy should be used to satisfy this requirement?
Answer:
Use target tracking scaling.
Question:
2. The company that you are working for has a highly available architecture consisting of an elastic load
balancer and several EC2 instances configured with auto-scaling in three Availability Zones. You want to
monitor your EC2 instances based on a particular metric, which is not readily available in CloudWatch.
Which of the following is a custom metric in Cloud- Watch which you have to manually set up?
Answer:
Memory Utilization of an EC2 instance
Question:
3. A startup is using Amazon RDS to store data from a web application. Most of the time, the application
has low user activity but it receives bursts of traffic within seconds whenever there is a new product
announcement. The Solutions Architect needs to create a solution that will allow users around the globe to
access the data using an API. What should the Solutions Architect do meet the above requirement?
Answer:
Create an API using Amazon API Gateway and use AWS Lambda to handle the bursts of traffic in
seconds.
Question:
4. An application hosted in EC2 consumes messages from an SQS queue and is integrated with SNS to
send out an email to you once the process is complete. The Operations team received 5 orders but after a
few hours, they saw 20 email notifications in their inbox.
Which of the following could be the possible culprit for this issue?
Answer:
The web application is not deleting the messages in the SQS queue after it has processed them.
Question:
5. A cryptocurrency trading platform is using an API built in AWS Lambda and API Gateway. Due to the
recent news and rumors about the upcoming price surge of Bitcoin, Ethereum and other cryptocurrencies,
it is expected that the trading platform would have a significant increase in site visitors and new users in
the coming days ahead.
In this scenario, how can you protect the backend systems of the platform from traffic spikes?
Answer:
Enable throttling limits and result caching in API Gateway.
, Question:
6. A company is using a combination of API Gateway and Lambda for the web services of the online web
portal that is being accessed by hundreds of thousands of clients each day. They will be announcing a new
revolutionary product and it is expected that the web portal will receive a massive number of visitors all
around the globe.
How can you protect the backend systems and applications from traffic spikes?
Answer:
Use throttling limits in API Gateway
Question:
7. A popular social media website uses a CloudFront web distribution to serve their static contents to their
millions of users around the globe. They are receiving a number of complaints recently that their users take
a lot of time to log into their website. There are also occasions when their users are getting HTTP 504
errors. You are instructed by your manager to significantly reduce the user's login time to further optimize
the system.
Which of the following options should you use together to set up a cost-effective solution that can improve
your application's performance? (Select TWO.)
Part I
Answer:
Customize the content that the CloudFront web distribution delivers to your users using Lambda@Edge,
which allows your Lambda functions to execute the authentication process in AWS locations closer to the
users.
Question:
8. A popular social media website uses a CloudFront web distribution to serve their static contents to their
millions of users around the globe. They are receiving a number of complaints recently that their users take
a lot of time to log into their website. There are also occasions when their users are getting HTTP 504
errors. You are instructed by your manager to significantly reduce the user's login time to further optimize
the system.
Which of the following options should you use together to set up a cost-effective solution that can improve
your application's performance? (Select TWO.)
Part II
Answer:
Set up an origin failover by creating an origin group with two origins. Specify one as the primary origin
and the other as the second origin which Cloud- Front automatically switches to when the primary origin
returns specific HTTP status code failure responses.
Question:
9. A company collects atmospheric data such as temperature, air pressure, and humidity from different
countries. Each site location is equipped with various weather instruments and a high-speed Internet
connection. The average collected data in each location is around 500 GB and will be analyzed by a
weather forecasting application hosted in Northern Virginia. As the Solutions Architect, you need to
aggregate all the data in the fastest way.
Which of the following options can satisfy the given requirement?
Answer:
Enable Transfer Acceleration in the destination bucket and upload the collected data using Multipart
Upload.
CORRECT ANSWERS
Question:
1. A company hosted a web application in an Auto Scaling group of EC2 instances. The IT manager is
concerned about the over-provisioning of the resources that can cause higher operating costs. A Solutions
Architect has been instructed to create a cost-effective solution without affecting the performance of the
application.
Which dynamic scaling policy should be used to satisfy this requirement?
Answer:
Use target tracking scaling.
Question:
2. The company that you are working for has a highly available architecture consisting of an elastic load
balancer and several EC2 instances configured with auto-scaling in three Availability Zones. You want to
monitor your EC2 instances based on a particular metric, which is not readily available in CloudWatch.
Which of the following is a custom metric in Cloud- Watch which you have to manually set up?
Answer:
Memory Utilization of an EC2 instance
Question:
3. A startup is using Amazon RDS to store data from a web application. Most of the time, the application
has low user activity but it receives bursts of traffic within seconds whenever there is a new product
announcement. The Solutions Architect needs to create a solution that will allow users around the globe to
access the data using an API. What should the Solutions Architect do meet the above requirement?
Answer:
Create an API using Amazon API Gateway and use AWS Lambda to handle the bursts of traffic in
seconds.
Question:
4. An application hosted in EC2 consumes messages from an SQS queue and is integrated with SNS to
send out an email to you once the process is complete. The Operations team received 5 orders but after a
few hours, they saw 20 email notifications in their inbox.
Which of the following could be the possible culprit for this issue?
Answer:
The web application is not deleting the messages in the SQS queue after it has processed them.
Question:
5. A cryptocurrency trading platform is using an API built in AWS Lambda and API Gateway. Due to the
recent news and rumors about the upcoming price surge of Bitcoin, Ethereum and other cryptocurrencies,
it is expected that the trading platform would have a significant increase in site visitors and new users in
the coming days ahead.
In this scenario, how can you protect the backend systems of the platform from traffic spikes?
Answer:
Enable throttling limits and result caching in API Gateway.
, Question:
6. A company is using a combination of API Gateway and Lambda for the web services of the online web
portal that is being accessed by hundreds of thousands of clients each day. They will be announcing a new
revolutionary product and it is expected that the web portal will receive a massive number of visitors all
around the globe.
How can you protect the backend systems and applications from traffic spikes?
Answer:
Use throttling limits in API Gateway
Question:
7. A popular social media website uses a CloudFront web distribution to serve their static contents to their
millions of users around the globe. They are receiving a number of complaints recently that their users take
a lot of time to log into their website. There are also occasions when their users are getting HTTP 504
errors. You are instructed by your manager to significantly reduce the user's login time to further optimize
the system.
Which of the following options should you use together to set up a cost-effective solution that can improve
your application's performance? (Select TWO.)
Part I
Answer:
Customize the content that the CloudFront web distribution delivers to your users using Lambda@Edge,
which allows your Lambda functions to execute the authentication process in AWS locations closer to the
users.
Question:
8. A popular social media website uses a CloudFront web distribution to serve their static contents to their
millions of users around the globe. They are receiving a number of complaints recently that their users take
a lot of time to log into their website. There are also occasions when their users are getting HTTP 504
errors. You are instructed by your manager to significantly reduce the user's login time to further optimize
the system.
Which of the following options should you use together to set up a cost-effective solution that can improve
your application's performance? (Select TWO.)
Part II
Answer:
Set up an origin failover by creating an origin group with two origins. Specify one as the primary origin
and the other as the second origin which Cloud- Front automatically switches to when the primary origin
returns specific HTTP status code failure responses.
Question:
9. A company collects atmospheric data such as temperature, air pressure, and humidity from different
countries. Each site location is equipped with various weather instruments and a high-speed Internet
connection. The average collected data in each location is around 500 GB and will be analyzed by a
weather forecasting application hosted in Northern Virginia. As the Solutions Architect, you need to
aggregate all the data in the fastest way.
Which of the following options can satisfy the given requirement?
Answer:
Enable Transfer Acceleration in the destination bucket and upload the collected data using Multipart
Upload.
