Skip to content

Amazon DBS-C01

AWS Certified Database - Specialty

Verified practice questions with detailed answers, clear explanations, and community discussion.

  • 359

    questions

  • 9 days ago

    last updated

  • 4.8/5

    overall rating

Question 1 of 359

A company has deployed an e-commerce web application in a new AWS account. An Amazon RDS for MySQL Multi-AZ DB instance is part of this deployment with a database-1.xxxxxxxxxxxx.us-east-1.rds.amazonaws.com endpoint listening on port 3306. The company's Database Specialist is able to log in to MySQL and run queries from the bastion host using these details.

When users try to utilize the application hosted in the AWS account, they are presented with a generic error message. The application servers are logging a `could not connect to server: Connection times out` error message to Amazon CloudWatch Logs.

What is the cause of this error?

Answer choices
Show answer

Correct answer: C

The error message 'could not connect to server: Connection times out' commonly indicates an issue with network connectivity or firewalls. In the context of AWS, security groups act as virtual firewalls to control inbound and outbound traffic to instances. Since the application servers cannot connect to the database, it is likely that the security group associated with the DB instance does not have a rule allowing inbound connections on the MySQL default port (3306) from the application servers. Ensuring the correct security group rules are in place would resolve this connectivity issue.

Community votes

28 votes

CSuggested

100%

Question 2 of 359

An AWS CloudFormation stack that included an Amazon RDS DB instance was accidentally deleted and recent data was lost. A Database Specialist needs to add

RDS settings to the CloudFormation template to reduce the chance of accidental instance data loss in the future.

Which settings will meet this requirement? (Choose three.)

Answer choices
Show answer

Correct answers: A, D, F

To prevent accidental data loss of an Amazon RDS DB instance in an AWS CloudFormation stack, certain settings need to be configured. Setting DeletionProtection to True ensures that the RDS instance cannot be deleted accidentally. Setting DeleteAutomatedBackups to False prevents the deletion of automated backups, thus aiding in data recovery in case of accidental deletion. Setting DeletionPolicy to Retain ensures that the resources are retained even if the CloudFormation stack is deleted, rather than being deleted themselves. These measures collectively help in safeguarding against accidental data loss.

Community votes

32 votes

ADFSuggested

81%

CDF

16%

F

3%

Question 3 of 359

A Database Specialist is troubleshooting an application connection failure on an Amazon Aurora DB cluster with multiple Aurora Replicas that had been running with no issues for the past 2 months. The connection failure lasted for 5 minutes and corrected itself after that. The Database Specialist reviewed the Amazon

RDS events and determined a failover event occurred at that time. The failover process took around 15 seconds to complete.

What is the MOST likely cause of the 5-minute connection outage?

Answer choices
Show answer

Correct answer: B

The 5-minute connection outage is most likely caused by the client-side application caching the DNS data with a time-to-live (TTL) set too high. After a failover, the underlying IP address of a DB instance can change. If the application continues to use a cached DNS entry with the old IP address, it will fail to connect to the new instance. Setting a shorter TTL for the DNS cache would ensure that the client application updates its DNS information quickly after a failover.

Community votes

49 votes

BSuggested

98%

D

2%

Question 4 of 359

A company is deploying a solution in Amazon Aurora by migrating from an on-premises system. The IT department has established an AWS Direct Connect link from the company's data center. The company's Database Specialist has selected the option to require SSL/TLS for connectivity to prevent plaintext data from being set over the network. The migration appears to be working successfully, and the data can be queried from a desktop machine.

Two Data Analysts have been asked to query and validate the data in the new Aurora DB cluster. Both Analysts are unable to connect to Aurora. Their user names and passwords have been verified as valid and the Database Specialist can connect to the DB cluster using their accounts. The Database Specialist also verified that the security group configuration allows network from all corporate IP addresses.

What should the Database Specialist do to correct the Data Analysts' inability to connect?

Answer choices
Show answer

Correct answer: B

The Data Analysts are unable to connect to the Aurora DB cluster likely because the connection requires SSL/TLS and they have not configured their connections to use the SSL certificate. To connect using SSL/TLS, the Analysts need to download the root certificate provided by AWS and include it in their connection string. This ensures that the connection is secure, as required by the Database Specialist's settings. Restarting the DB cluster, modifying firewalls, or adding IP address mappings wouldn't address this SSL requirement directly.

Community votes

48 votes

BSuggested

85%

D

15%

Question 5 of 359

A company is concerned about the cost of a large-scale, transactional application using Amazon DynamoDB that only needs to store data for 2 days before it is deleted. In looking at the tables, a Database Specialist notices that much of the data is months old, and goes back to when the application was first deployed.

What can the Database Specialist do to reduce the overall cost?

Answer choices
Show answer

Correct answer: C

To reduce the overall cost, the Database Specialist should create a new attribute in each table to track the expiration time and enable time to live (TTL) on each table. TTL automatically deletes expired items from the table without requiring manual intervention, effectively managing storage costs by ensuring that only necessary data is retained. Unlike complex solutions involving AWS Glue transformations or data pipelines, TTL is a native feature of DynamoDB designed specifically for this purpose and does not incur additional costs.

Community votes

41 votes

CSuggested

100%

354 questions still locked

Your preview covered the first 5 questions. Unlock the rest to see every explanation and discussion thread, updated weekly

View plans

Choose your plan

Single payment · No subscription · No hidden fees

Standard

For a focused sprint before your exam date

$25USD

30 days of access, single payment

  • All 359 questions unlocked
  • Detailed answer explanations
  • Community discussions and votes
  • Weekly question updates
  • Printable PDF download
  • 100% refund if you do not pass

Premium

Extra runway, the PDF, and the refund guarantee

$35$60USD

90 days of access, single payment

Printable PDF download

Save every question as a PDF for offline study or printing.

  • All 359 questions unlocked
  • Detailed answer explanations
  • Community discussions and votes
  • Weekly question updates

Full refund if you do not pass

Send us your exam result and we refund the purchase.

Stories from the certified

Charles Sirois
Canada
As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
Lance Chambers
United States
Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
Italy
Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
Netherlands
Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
Gabriele Ghesla
Italy
The content is accurate and clearly presented, and it's more affordable than competitors. The team has been incredibly responsive whenever I've had an issue, and they've been open to small changes that improve the platform.
Charles Sirois
Canada
As this was my first certification exam, I was understandably nervous about what to expect. These study materials made the preparation process much easier, and many of the questions closely reflected those on the actual exam.
Lance Chambers
United States
Wasted about a month going through the free dump sites scattered all over reddit, half the answers were wrong and the other half were for a version of the exam that doesn't even exist anymore. Eventually gave in and paid the small fee here, and the difference was night and day.
Alisha Kelly
Italy
Honestly, I had already gone through the official documentation quite thoroughly, but still didn't feel fully confident going in. This helped things finally click for me. I realized I knew the material, but just hadn't connected all the pieces yet.
Casper Claassen
Netherlands
Used this along with Microsoft Learn and the combo worked really well. The practice questions made the stuff I'd read actually stick. Passed first attempt, no complaints from me.
Gabriele Ghesla
Italy
The content is accurate and clearly presented, and it's more affordable than competitors. The team has been incredibly responsive whenever I've had an issue, and they've been open to small changes that improve the platform.
Morgan Farmer
United Kingdom
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.
Morgan Farmer
United Kingdom
I don't usually leave reviews, but this one felt worth sharing. The questions were quite close to what actually appeared on the exam, more than I expected. I spent about a week going through the material before my test, and it helped me feel more prepared.
Remi Nuyts
United States
Passed ITIL 4 Foundation with 87%. Material was enough by itself.
Archie Hopkins
United States
I had a smooth experience from start to finish. Access was available right away, no technical issues, which made it easy to get started. The content felt relevant and aligned well with what I was looking for.
Nancy Mcbride
United States
Does what it says it does. Content felt solid, nothing confusing to navigate and I didn't run into any weird issues. I been putting off scheduling the exam for a while and going through this gave me enough confidence to finally book it and pass.
Neil Savage
United States
A very quick response was received via email when a link issue occurred. The study materials provided were high quality and extremely helpful. I was able to complete the test successfully. Many thanks for the excellent support.

Before you buy

Answers about access, updates, payments, and the refund policy.

01Are these real exam questions?

Our Amazon DBS-C01 questions are based on real exam experiences and are regularly updated to match the current exam format. Most candidates who study with us report passing on their first attempt, based on a self reported post exam survey.

02What happens if I don't pass the exam?

With our Premium package, you get a 100% money back guarantee. If you don't pass your exam after studying with our materials, simply contact us with your exam results and we'll refund your purchase.

03How often are the questions updated?

Our question bank is updated regularly based on feedback from recent exam takers. We typically review and update our content every week with reports about new questions or changes to the exam format.

04What does Premium add on the exam page?

Both plans open the full question bank, the explanations, and the discussions. Premium also includes the printable PDF and advanced study tools, giving you full control over how many questions you see per page, quick navigation to any page, and the ability to resume exactly where you left off.

05Is this a single payment or a subscription?

This is a single payment with no recurring charges. Once you purchase, you get full access to all exam questions for the duration of your package (30 days for Standard, 90 days for Premium). No hidden fees or automatic renewals.

06How many questions are included?

You get access to all 359 questions in our database for the Amazon DBS-C01 exam. This includes detailed explanations and answer justifications to help you understand the concepts thoroughly.

07Do you offer technical support?

Yes. Email us at hello@examice.com for help with access, billing, or the platform. We read every message and typically reply within 24 hours on business days.

08Is my payment secure?

Absolutely! We use industry standard SSL encryption and process all payments through Stripe, a trusted payment processor used by millions of businesses worldwide. Your payment and personal information are completely secure.

Ready to unlock the rest

All 359 questions from $25, single payment, instant access.

Back to plans