AWS-SysOps Free Practice Test

- (Exam Topic 1)
A company is migrating its production file server to AWS. All data that is stored on the file server must remain accessible if an Availability Zone becomes unavailable or when system maintenance is performed. Users must be able to interact with the file server through the SMB protocol. Users also must have the ability to manage file permissions by using Windows ACLs.
Which solution will net these requirements?

1. A. Create a single AWS Storage Gateway file gateway.
2. B. Create an Amazon FSx for Windows File Server Multi-AZ file system.
3. C. Deploy two AWS Storage Gateway file gateways across two Availability Zone
4. D. Configure an Application Load Balancer in front of the file gateways.
5. E. Deploy two Amazon FSx for Windows File Server Single-AZ 2 file system
6. F. Configure Microsoft Distributed File System Replication (DFSR).

Correct Answer: B
https://aws.amazon.com/fsx/windows/

- (Exam Topic 1)
A SysOps administrator needs to track the costs of data transfer between AWS Regions. The SysOps administrator must implement a solution to send alerts to an email distribution list when transfer costs reach 75% of a specific threshold.
What should the SysOps administrator do to meet these requirements?

1. A. Create an AWS Cost and Usage Repor
2. B. Analyze the results in Amazon Athen
3. C. Configure an alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topic when costs reach 75% of the threshol
4. D. Subscribe the email distribution list to the topic.
5. E. Create an Amazon CloudWatch billing alarm to detect when costs reach 75% of the threshold.Configure the alarm to publish a message to an Amazon Simple Notification Service (Amazon SNS) topi
6. F. Subscribe the email distribution list to the topic.
7. G. Use AWS Budgets to create a cost budget for data transfer cost
8. H. Set an alert at 75% of the budgeted amoun
9. I. Configure the budget to send a notification to the email distribution list when costs reach 75% of the threshold.
10. J. Set up a VPC flow lo
11. K. Set up a subscription filter to an AWS Lambda function to analyze data transfer.Configure the Lambda function to send a notification to the email distribution list when costs reach 75% of the threshold.

Correct Answer: B
The reason is that it uses the Amazon CloudWatch billing alarm which is a built-in service specifically designed to monitor and alert on cost usage of your AWS account, which makes it a more suitable solution for this use case. The alarm can be configured to detect when costs reach 75% of the threshold and when it is triggered, it can publish a message to an Amazon Simple Notification Service (Amazon SNS) topic. The email distribution list can be subscribed to the topic, so that they will receive the alerts when costs reach 75% of the threshold.
AWS Budgets allows you to track and manage your costs, but it doesn't specifically focus on data transfer costs between regions, and it might not provide as much granularity as CloudWatch Alarms.

- (Exam Topic 1)
A company runs an application on Amazon EC2 instances. The EC2 instances are in an Auto Scaling group and run behind an Application Load Balancer (ALB). The application experiences errors when total requests exceed 100 requests per second. A SysOps administrator must collect information about total requests for a 2-week period to determine when requests exceeded this threshold.
What should the SysOps administrator do to collect this data?

1. A. Use the ALB’s RequestCount metri
2. B. Configure a time range of 2 weeks and a period of 1 minute.Examine the chart to determine peak traffic times and volumes.
3. C. Use Amazon CloudWatch metric math to generate a sum of request counts for all the EC2 instances over a 2-week perio
4. D. Sort by a 1-minute interval.
5. E. Create Amazon CloudWatch custom metrics on the EC2 launch configuration templates to create aggregated request metrics across all the EC2 instances.
6. F. Create an Amazon EventBridge (Amazon CloudWatch Events) rul
7. G. Configure an EC2 event matching pattern that creates a metric that is based on EC2 request
8. H. Display the data in a graph.

Correct Answer: A
Using the ALB’s RequestCount metric will allow the SysOps administrator to collect information about total requests for a 2-week period and determine when requests exceeded the threshold of 100 requests per second. Configuring a time range of 2 weeks and a period of 1 minute will ensure that the data can be accurately examined to determine peak traffic times and volumes.

- (Exam Topic 1)
A company is running a serverless application on AWS Lambda The application stores data in an Amazon RDS for MySQL DB instance Usage has steadily increased and recently there have been numerous "too many connections" errors when the Lambda function attempts to connect to the database The company already has configured the database to use the maximum max_connections value that is possible
What should a SysOps administrator do to resolve these errors'?

1. A. Create a read replica of the database Use Amazon Route 53 to create a weighted DNS record that contains both databases
2. B. Use Amazon RDS Proxy to create a proxy Update the connection string in the Lambda function
3. C. Increase the value in the max_connect_errors parameter in the parameter group that the database uses
4. D. Update the Lambda function's reserved concurrency to a higher value

Correct Answer: B
https://aws.amazon.com/blogs/compute/using-amazon-rds-proxy-with-aws-lambda/
RDS Proxy acts as an intermediary between your application and an RDS database. RDS Proxy establishes and manages the necessary connection pools to your database so that your application creates fewer database connections. Your Lambda functions interact with RDS Proxy instead of your database instance. It handles the connection pooling necessary for scaling many simultaneous connections created by concurrent Lambda functions. This allows your Lambda applications to reuse existing connections, rather than creating new connections for every function invocation.
Check "Database proxy for Amazon RDS" section in the link to see how RDS proxy help Lambda handle huge connections to RDS MySQL
https://aws.amazon.com/blogs/compute/using-amazon-rds-proxy-with-aws-lambda/

- (Exam Topic 1)
A large multinational company has a core application that runs 24 hours a day, 7 days a week on Amazon EC2 and AWS Lambda. The company uses a combination of operating systems across different AWS Regions. The company wants to achieve cost savings and wants to use a pricing model that provides the most flexibility.
What should the company do to MAXIMIZE cost savings while meeting these requirements?

1. A. Establish the compute expense by the hou
2. B. Purchase a Compute Savings Plan.
3. C. Establish the compute expense by the hou
4. D. Purchase an EC2 Instance Savings Plan.
5. E. Purchase a Reserved Instance for the instance types, operating systems, Region, and tenancy.
6. F. Use EC2 Spot Instances to match the instances that run in each Region.

Correct Answer: D