AWS Certified Database - Specialty

Here you have the best Amazon DBS-C01 practice exam questions

  • Preview the first 5 of 359 questions for free
  • These questions were last updated on May 7, 2026
  • This site is not affiliated with or endorsed by Amazon.
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

Suggested Answer

The suggested answer is 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 Votes5 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

Suggested Answer

The suggested answer is 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 Votes30 votes
ADFSuggested
87%
CDF
13%
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

Suggested Answer

The suggested answer is 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 Votes7 votes
BSuggested
100%
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

Suggested Answer

The suggested answer is 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 Votes9 votes
BSuggested
100%
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

Suggested Answer

The suggested answer is 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 Votes15 votes
CSuggested
100%

354 more questions await

Unlock the full Amazon DBS-C01 question bank

5 of 359 completed1%

Choose your plan

One-time payment · No subscription · No hidden fees

Standard

Quick preparation

$25

30 days access

30 day access to all questions
Instant free updates
Highest passing rate in industry
Printable PDF download
No money-back guarantee
Best Value

Premium

Guaranteed success

$60$35

90 days access

PDF

Printable PDF download

New

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

90 day access to all questions
Instant free updates
Highest passing rate in industry
Pass guaranteed or money back

100% Money-Back Guarantee

Don't pass? Full refund.

4.9/5

Based on 4,448+ reviews

Trusted by thousands of professionals

Join certified professionals who passed their exams with Examice

Examice helped me pass my AWS certification on the first try! The questions were incredibly similar to the real exam. Comments helped me understand answers I was struggling with.
S
Sarah C.
Cloud Engineer
Great results in a short prep time. Passed on my first attempt.
D
David K.
Network Engineer
I needed to pass an exam for work, and this website delivered. The quality for the price is outstanding, and the support is really good. I passed without issues.
M
Michael R.
Security Analyst
Skeptical at first, but impressed. Every question included clear, detailed explanations.
L
Lisa M.
Solutions Architect
The guarantee gave me confidence to invest in the premium package. Turns out I didn't need it. Passed comfortably. The explanations for each answer were incredibly detailed and helped me grasp security concepts that I'd been struggling with for months.
R
Robert H.
Cybersecurity Consultant
Used Examice for my PMP certification. The questions were well structured and covered all exam domains thoroughly.
J
James T.
IT Manager
After failing my first attempt with other study materials, I switched to Examice and passed confidently on my second attempt.
A
Anna W.
Data Engineer
The premium package was worth it. 90 days of access gave me the flexibility to study when it worked for me, without feeling rushed.
E
Emily J.
DevOps Engineer
Straightforward questions that matched the real exam perfectly. Studied for two weeks and passed with a great score.
K
Karen P.
Systems Administrator

Frequently Asked Questions

Everything you need to know. Contact us for more.

Our Amazon DBS-C01 questions are based on real exam experiences and are continuously updated to match the current exam format. We maintain a +99% pass rate because our questions closely mirror what you'll see on the actual 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. Terms and conditions apply, read our full refund policy to learn more.

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.

Standard package access cannot be extended. However, Premium package gives you 90 days which is typically more than enough time to prepare thoroughly. If you need additional time, you can purchase a new package at any time.

This is a one-time 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.

Pass on your first try

All 359questions · Detailed explanations · Printable PDF · 90 days access

Money-back guaranteeSecure checkout
$35

one-time payment