Free SAP-C01 Exam Dumps

Question 21

A company runs an IoT platform on AWS. IoT sensors in various locations send data to the company’s Node.js API servers on Amazon EC2 instances running behind an Application Load Balancer. The data is stored in an Amazon RDS MySQL DB instance that uses a 4 TB General Purpose SSD volume.
The number of sensors the company has deployed in the field has increased over time, and is expected to grow significantly. The API servers are consistently overloaded and RDS metrics show high write latency.
Which of the following steps together will resolve the issues permanently and enable growth as new sensors are provisioned, while keeping this platform cost-efficient? (Choose two.)

A. Resize the MySQL General Purpose SSD storage to 6 TB to improve the volume’s IOPS
B. Re-architect the database tier to use Amazon Aurora instead of an RDS MySQL DB instance and add read replicas
C. Leverage Amazon Kinesis Data Streams and AWS Lambda to ingest and process the raw data
D. Use AWS-X-Ray to analyze and debug application issues and add more API servers to match the load
E. Re-architect the database tier to use Amazon DynamoDB instead of an RDS MySQL DB instance

Correct Answer:CE

Question 22

A company is running an email application across multiple AWS Regions. The company uses Ohio (us-east-2) as the primary Region and Northern Virginia (us-east-1) as the Disaster Recovery (DR) Region. The data is continuously replicated from the primary Region to the DR Region by a single instance on the public subnet in both Regions. The replication messages between the Regions have a significant backlog during certain times of the day. The backlog clears on its own after a short time, but it affects the application’s RPO.
Which of the following solutions should help remediate this performance problem? (Select TWO)

A. Increase the size of the instances.
B. Have the instance in the primary Region write the data to an Amazon SQS queue in the primary Region instead, and have the instance in the DR Region poll from this queue.
C. Use multiple instances on the primary and DR Regions to send and receive the replication data.
D. Change the DR Region to Oregon (us-west-2) instead of the current DR Region.
E. Attach an additional elastic network interface to each of the instances in both Regions and set up load balancing between the network interfaces.

Correct Answer:AC

Question 23

A company runs a public-facing application that uses a Java-based web sen/ice via a RESTful API It is hosted on Apache Tomcat on a single server in a data center that runs consistently at 30% CPU utilization Use of the API is expected to increase by 10 times with a new product launch The business wants to migrate the application to AWS with no disruption and needs it to scale to meet demand
The company has already decided to use Amazon Route 53 and CNAME records lo redirect traffic How can these requirements be met with the LEAST amount of effort?

A. Use AWS Elastic Beanstalk to deploy the Java web service and enable Auto Scaling Then switch the application to use the new web service
B. Lift and shift the Apache server to the cloud using AWS SMS Then switch the application to direct web service traffic to the new instance
C. Create a Docker image and migrate the image to Amazon ECS Then change the application code to direct web service queries to the ECS container
D. Modify the application to call the web service via Amazon API Gateway Then create a new AWS Lambda Java function to run the Java web service code After testing change API Gateway to use the Lambda function

Correct Answer:A

Question 24

A company has released a new version of a website to target an audience in Asia and South America. The website’s media assets are hosted on Amazon S3 and have an Amazon CloudFront distribution to improve end-user performance. However, users are having a poor login experience the authentication service is only available in the us-east-1 AWS Region.
How can the Solutions Architect improve the login experience and maintain high security and performance with minimal management overhead?

A. Replicate the setup in each new geography and use Amazon Route 53 geo-based routing to route traffic to the AWS Region closest to the users.
B. Use an Amazon Route 53 weighted routing policy to route traffic to the CloudFront distributio
C. Use CloudFront cached HTTP methods to improve the user login experience.
D. Use Amazon Lambda@Edge attached to the CloudFront viewer request trigger to authenticate and authorize users by maintaining a secure cookie token with a session expiry to improve the user experience in multiple geographies.
E. Replicate the setup in each geography and use Network Load Balancers to route traffic to the authentication service running in the closest region to users.

Correct Answer:C
There are several benefits to using Lambda@Edge for authorization operations. First, performance is improved by running the authorization function using Lambda@Edge closest to the viewer, reducing latency and response time to the viewer request. The load on your origin servers is also reduced by offloading CPU-intensive operations such as verification of JSON Web Token (JWT) signatures. Finally, there are security benefits such as filtering out unauthorized requests before they reach your origin infrastructure.
https://aws.amazon.com/blogs/networking-and-content-delivery/authorizationedge-how-to-use-lambdaedge-and-

Question 25

A group of Amazon EC2 instances have been configured as high performance computing (HPC) cluster. The instances are running in a placement group, and are able to communicate with each other at network of up to 20 Gbps.
The cluster needs to communicate with a control EC2 instance outside of the placement group. The control instance has the same instance type and AMI as the other instances, and is configured with a public IP address.
How can the Solutions Architect improve the network speeds between the control instance and the instances in the placement group?

A. Terminate the control instance and relaunch in the placement group.
B. Ensure that the instances are communicating using the private IP addresses.
C. Ensure that the control instance is using an Elastic Network Adapter.
D. Move the control instance inside the placement group.

Correct Answer:D
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/placement-groups.html