SOA-C02 Free Practice Test

- (Exam Topic 1)
A company runs hundreds of Amazon EC2 instances in a single AWS Region. Each EC2 instance has two attached 1 GiB General Purpose SSD (gp2) Amazon Elastic Block Store (Amazon EBS) volumes. A critical workload is using all the available IOPS capacity on the EBS volumes.
According to company policy, the company cannot change instance types or EBS volume types without completing lengthy acceptance tests to validate that the company’s applications will function properly. A SysOps administrator needs to increase the I/O performance of the EBS volumes as quickly as possible.
Which action should the SysOps administrator take to meet these requirements?

1. A. Increase the size of the 1 GiB EBS volumes.
2. B. Add two additional elastic network interfaces on each EC2 instance.
3. C. Turn on Transfer Acceleration on the EBS volumes in the Region.
4. D. Add all the EC2 instances to a cluster placement group.

Correct Answer: A
Increasing the size of the 1 GiB EBS volumes will increase the IOPS capacity of the volumes, which will improve the I/O performance of the EBS volumes. This option does not require any changes to the instance types or EBS volume types, so it can be done quickly without the need for lengthy acceptance tests to validate that the company's applications will function properly.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/requesting-ebs-volume-modifications.html

- (Exam Topic 1)
A SysOps administrator is optimizing the cost of a workload. The workload is running in multiple AWS Regions and is using AWS Lambda with Amazon EC2 On-Demand Instances for the compute. The overall usage is predictable. The amount of compute that is consumed in each Region varies, depending on the users' locations.
Which approach should the SysOps administrator use to optimize this workload?

1. A. Purchase Compute Savings Plans based on the usage during the past 30 days
2. B. Purchase Convertible Reserved Instances by calculating the usage baseline.
3. C. Purchase EC2 Instance Savings Plane based on the usage during the past 30 days
4. D. Purchase Standard Reserved Instances by calculating the usage baseline.

Correct Answer: C

- (Exam Topic 1)
A SysOps administrator is unable to launch Amazon EC2 instances into a VPC because there are no available private IPv4 addresses in the VPC. Which combination of actions must the SysOps administrator take to launch the instances? (Select TWO.)

1. A. Associate a secondary IPv4 CIDR block with the VPC
2. B. Associate a primary IPv6 CIDR block with the VPC
3. C. Create a new subnet for the VPC
4. D. Modify the CIDR block of the VPC
5. E. Modify the CIDR block of the subnet that is associated with the instances

Correct Answer: AD

- (Exam Topic 1)
A SysOps Administrator runs a web application that is using a microservices approach whereby different responsibilities of the application have been divided in a separate microservice running on a different Amazon EC2 instance. The administrator has been tasked with reconfiguring the infrastructure to support this approach.
How can the administrator accomplish this with the LEAST administrative overhead?

1. A. Use Amazon CloudFront to log the URL and forward the request.
2. B. Use Amazon CloudFront to rewrite the header based on the microservice and forward the request.
3. C. Use an Application Load Balancer (ALB) and do path-based routing.
4. D. Use a Network Load Balancer (NLB) and do path-based routing.

Correct Answer: C
https://aws.amazon.com/premiumsupport/knowledge-center/elb-achieve-path-based-routing-alb/

- (Exam Topic 1)
A company uses an Amazon Simple Queue Service (Amazon SQS) standard queue with its application. The application sends messages to the queue with unique message bodies The company decides to switch to an SQS FIFO queue
What must the company do to migrate to an SQS FIFO queue?

1. A. Create a new SQS FIFO gueue Turn on content based deduplication on the new FIFO queue Update the application to include a message group ID in the messages
2. B. Create a new SQS FIFO queue Update the application to include the DelaySeconds parameter in the messages
3. C. Modify the queue type from SQS standard to SQS FIFO Turn off content-based deduplication on the queue Update the application to include a message group ID in the messages
4. D. Modify the queue type from SQS standard to SQS FIFO Update the application to send messages with identical message bodies and to include the DelaySeconds parameter in the messages

Correct Answer: A
FIFO queues don't support per-message delays, only per-queue delays. If your application sets the same value of the DelaySeconds parameter on each message, you must modify your application to remove the
per-message delay and set DelaySeconds on the entire queue instead.
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/FIFO-queues-moving.html