Practice Exam | AWS Certified Database Specialty

Preparing for AWS Certified Database Specialty DBS-C01? This is THE practice exam course to give you the winning edge.

These practice exams have been co-authored by Stephane Maarek and Abhishek Singh who bring their collective experience of passing 18 AWS Certifications to the table.

The tone and tenor of the questions mimic the real exam. Along with the detailed description and “exam alert” provided within the explanations, we have also extensively referenced AWS documentation to get you up to speed on all domain areas being tested for the DBS-C01 exam.

We want you to think of this course as the final pit-stop so that you can cross the winning line with absolute confidence and get AWS Certified! Trust our process, you are in good hands.

All questions have been written from scratch! And more questions are being added over time!

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Quality speaks for itself...

SAMPLE QUESTION:

A gaming company maintains a staging environment for its flagship application which uses a DynamoDB table to keep track of gaming history for the players. This data needs to be kept for only a week and then it can be deleted. The IT manager has noticed that the table has several months of data in the table. The company wants to implement a cost-effective solution to keep only the latest week's data in the table.

Which of the following solutions requires the MINIMUM development effort and on-going maintenance?

1. Add a new attribute in the table to track the expiration time and set up a Glue job to delete items that are more than a week old

2. Add a created_at attribute in the table and then use a cron job on EC2 instance to invoke a Python script daily. The script deletes items older than a week on the basis of this attribute

3. Add a created_at attribute in the table and then use a CloudWatch Events rule to invoke a Lambda function daily. The Lambda function deletes items older than a week on the basis of this attribute

4. Add a new attribute in the table to track the expiration time and enable time to live (TTL) on the table

What's your guess? Scroll below for the answer...

Correct: 4.

Add a new attribute in the table to track the expiration time and enable time to live (TTL) on the table"

You can use DynamoDB Time to Live (TTL) to determine when an item is no longer needed. TTL uses a per-item timestamp to determine items for expiration. Shortly after the date and time of the specified timestamp, DynamoDB deletes the item from your table without consuming any write throughput. After you enable TTL on a table, a per-partition scanner background process automatically and continuously evaluates the expiry status of items in the table.

< diagrams included >

Incorrect options:

"Add a new attribute in the table to track the expiration time and set up a Glue job to delete items that are more than a week old" - Although this solution is theoretically possible, but it would require a significant development effort to build and maintain a Glue job to trim the DynamoDB table. There is an additional cost of running the Glue job on a daily basis as well.

"Add a created_at attribute in the table and then use a cron job on EC2 instance to invoke a Python script daily. The script deletes items older than a week on the basis of this attribute" - Provisioning an EC2 instance and developing Python script involves significant development effort, maintenance and additional cost. So this option is not correct.

"Add a created_at attribute in the table and then use a CloudWatch Events rule to invoke a Lambda function daily. The Lambda function deletes items older than a week on the basis of this attribute" - Custom code needs to be written for the Lambda function to implement the functionality to trim the DynamoDB table. Lambda function execution is also charged separately. So this option is not correct.

< reference links included >

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Instructor

My name is Stéphane Maarek, I am passionate about Cloud Computing, and I will be your instructor in this course. I teach about AWS certifications, focusing on helping my students improve their professional proficiencies in AWS.

I have already taught 1,500,000+ students and gotten 500,000+ reviews throughout my career in designing and delivering these certifications and courses!

I'm delighted to welcome Abhishek Singh as my co-instructor for these practice exams!

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Welcome to the best practice exams to help you prepare for your AWS Certified Database Specialty exam.

• You can retake the exams as many times as you want

• This is an original question bank

• You get support from instructors if you have questions

• Each question has a detailed explanation

• Mobile-compatible with the Udemy app

• 30-days money-back guarantee if you're not satisfied

We hope that by now you're convinced!... And there are a lot more questions inside the course.

Happy learning and best of luck for your AWS Certified Database Specialty exam!