- A
Create a custom IAM role that grants only the necessary actions on a specific S3 bucket
A custom role with resource-level restrictions follows least privilege.
- B
Store S3 bucket names in environment variables instead of hardcoding
Why wrong: This is a coding practice, not a permissions fix.
- C
Attach the AWS managed policy 'AmazonS3ReadOnlyAccess'
Why wrong: Read-only might be too restrictive if the function needs to write, but also this does not scope to specific buckets.
- D
Remove the Lambda function's VPC integration
Why wrong: VPC integration affects network access, not IAM permissions.
Question 817 of 1,000
hardMultiple ChoiceObjective-mapped
CCSP Practice Question: During a security review of a serverless…
This CCSP practice question tests your understanding of during a security review of a serverless…. 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.
During a security review of a serverless application, you notice that a Lambda function's execution role has permissions to delete all S3 buckets in the account. What is the most appropriate remediation to align with the principle of least privilege?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"least"Why it matters: You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a custom IAM role that grants only the necessary actions on a specific S3 bucket
Creating a custom role with only the specific actions needed (e.g., s3:PutObject for a specific bucket) reduces blast radius. Using managed policies may grant excessive permissions; environment variables and VPC integration are unrelated.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Create a custom IAM role that grants only the necessary actions on a specific S3 bucket
Why this is correct
A custom role with resource-level restrictions follows least privilege.
Clue confirmation
The clue word "least" in the question point toward this answer.
Related concept
Authentication checks who the user is.
- ✗
Store S3 bucket names in environment variables instead of hardcoding
Why it's wrong here
This is a coding practice, not a permissions fix.
- ✗
Attach the AWS managed policy 'AmazonS3ReadOnlyAccess'
Why it's wrong here
Read-only might be too restrictive if the function needs to write, but also this does not scope to specific buckets.
- ✗
Remove the Lambda function's VPC integration
Why it's wrong here
VPC integration affects network access, not IAM permissions.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
- Authentication checks who the user is.
- Authorization controls what the user is allowed to do after login.
- Privilege levels affect access to EXEC and configuration commands.
- AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
- Do not assume successful login means full administrative access.
- Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
- Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A security team runs a vulnerability scan on a web application and discovers an unpatched SQL injection flaw. The team prioritises remediation by CVSS score — critical flaws are patched within 24 hours, high within 7 days. Questions like this test whether you understand vulnerability management processes, scanning tools, and remediation prioritisation.
Quick reference
AAA Protocol Comparison
| Protocol | Port(s) | Encryption | Transport | Primary Use |
|---|---|---|---|---|
| RADIUS | 1812 / 1813 | Password only | UDP | Network access control |
| TACACS+ | 49 | Full packet | TCP | Device administration |
| Diameter | 3868 | Full session | TCP / SCTP | Carrier / mobile networks |
| 802.1X | — | EAP-based | Layer 2 | Port-based access control |
TACACS+ encrypts the entire packet; RADIUS only encrypts the password field — a key exam distinction.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related CCSP questions on access control and AAA configuration.
Related practice questions
Related CCSP practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Cloud Platform and Infrastructure Security practice questions
Practise CCSP questions linked to Cloud Platform and Infrastructure Security.
Cloud Security Operations practice questions
Practise CCSP questions linked to Cloud Security Operations.
Legal, Risk, and Compliance practice questions
Practise CCSP questions linked to Legal, Risk, and Compliance.
Legal, Risk and Compliance practice questions
Practise CCSP questions linked to Legal, Risk and Compliance.
Cloud Data Security practice questions
Practise CCSP questions linked to Cloud Data Security.
Cloud Concepts, Architecture, and Design practice questions
Practise CCSP questions linked to Cloud Concepts, Architecture, and Design.
Cloud Application Security practice questions
Practise CCSP questions linked to Cloud Application Security.
Cloud Concepts, Architecture and Design practice questions
Practise CCSP questions linked to Cloud Concepts, Architecture and Design.
CCSP fundamentals practice questions
Practise CCSP questions linked to CCSP fundamentals.
CCSP scenario practice questions
Practise CCSP questions linked to CCSP scenario.
CCSP troubleshooting practice questions
Practise CCSP questions linked to CCSP troubleshooting.
Practice this exam
Start a free CCSP practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this CCSP question test?
Authentication checks who the user is.
What is the correct answer to this question?
The correct answer is: Create a custom IAM role that grants only the necessary actions on a specific S3 bucket — Creating a custom role with only the specific actions needed (e.g., s3:PutObject for a specific bucket) reduces blast radius. Using managed policies may grant excessive permissions; environment variables and VPC integration are unrelated.
What should I do if I get this CCSP question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related CCSP questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "least". You want the option with minimum overhead, fewest steps, or lowest impact — not the most feature-rich or comprehensive answer.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This CCSP practice question is part of Courseiva's free ISC2 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 CCSP exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.