The answer is the three IAM condition keys dynamodb:LeadingKeys, dynamodb:Attributes, and dynamodb:Select. These conditions enable DynamoDB fine-grained access control by restricting operations to specific items based on the primary key hash value (LeadingKeys), limiting which attributes are returned or written (Attributes), and controlling which query or scan operations are permitted (Select). On the AWS Certified Database Specialty DBS-C01 exam, this concept tests your understanding of how IAM policies can enforce row-level and attribute-level security without requiring a separate authorization layer. A common trap is confusing table-level identifiers like dynamodb:TableName with item-level conditions, or assuming dynamodb:ReturnValues is an access control key when it is actually a write operation parameter. Remember the mnemonic “LAS” — LeadingKeys, Attributes, Select — to recall the three item-level conditions that lock down DynamoDB access at the primary key level.
DBS-C01 Database Security Practice Question
This DBS-C01 practice question tests your understanding of database security. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses Amazon DynamoDB with DAX and wants to implement fine-grained access control using IAM. Which THREE conditions can be used in an IAM policy to restrict access to specific items based on the primary key?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
dynamodb:Attributes
Options A, B, and D are correct. DynamoDB supports IAM conditions for fine-grained access control using dynamodb:LeadingKeys, dynamodb:Attributes, and dynamodb:Select. Option C is wrong because dynamodb:TableName identifies the table, not items. Option E is wrong because dynamodb:ReturnValues is a parameter for write operations, not a condition for access control.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
dynamodb:Attributes
Why this is correct
Restricts access to specific attributes (columns).
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
dynamodb:ReturnValues
Why it's wrong here
This is a parameter for write operations, not a condition key for access control.
✗
dynamodb:TableName
Why it's wrong here
This identifies the table but not the items within it.
✓
dynamodb:LeadingKeys
Why this is correct
Restricts access to items with a specific partition key value.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✓
dynamodb:Select
Why this is correct
Controls whether the query can use SELECT (e.g., ALL_ATTRIBUTES, SPECIFIC_ATTRIBUTES).
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Database Security — This question tests Database Security — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: dynamodb:Attributes — Options A, B, and D are correct. DynamoDB supports IAM conditions for fine-grained access control using dynamodb:LeadingKeys, dynamodb:Attributes, and dynamodb:Select. Option C is wrong because dynamodb:TableName identifies the table, not items. Option E is wrong because dynamodb:ReturnValues is a parameter for write operations, not a condition for access control.
What should I do if I get this DBS-C01 question wrong?
Identify which DBS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company has an Amazon DynamoDB table with a global secondary index (GSI). The security team wants to ensure that only certain attributes are returned in query results based on the IAM policy of the calling user. What is the most secure and scalable approach?
hard
A.Use an AWS Lambda function as a middleware to filter attributes before returning results.
B.Create multiple global secondary indexes that include only the allowed attributes for each user group.
✓ C.Use IAM condition keys with 'dynamodb:Attributes' to restrict access to specific attributes.
D.Create a VPC endpoint for DynamoDB and attach a bucket policy that limits attribute access.
Why C: Option C is correct. Using IAM condition keys with 'dynamodb:Attributes' allows fine-grained access control at the attribute level. This is the recommended way to restrict access to specific attributes. Option A is incorrect because attribute-level IAM policies can be applied without VPC endpoints. Option B is incorrect because DynamoDB does not support column-level security through Lambda. Option D is incorrect because modifying the GSI to include only allowed attributes would require multiple GSIs and is not scalable.
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This DBS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DBS-C01 exam.
Question Discussion
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