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Question 897 of 1,546

Reliability and Business Continuity →hardMultiple SelectObjective-mapped

SOA-C02 Reliability and Business Continuity Practice Question

This SOA-C02 practice question tests your understanding of reliability and business continuity. 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 S3 to store backup data. The SysOps administrator needs to ensure that the data is protected against accidental deletion by users with administrative privileges. Which combination of actions should the administrator take? (Choose TWO.)

A
Enable MFA Delete on the S3 bucket.
MFA Delete requires multi-factor authentication to permanently delete objects.
B
Apply an S3 bucket policy that denies s3:DeleteObject for all users.
Why wrong: Bucket policy would block all deletions, which may be too restrictive.
C
Enable versioning on the S3 bucket.
Versioning allows recovery of deleted objects by restoring previous versions.
D
Configure a lifecycle policy to transition objects to S3 Glacier.
Why wrong: Lifecycle policies do not prevent deletion.
E
Enable AWS CloudTrail to log all S3 API calls.
Why wrong: CloudTrail provides audit logs but does not prevent deletion.

Full breakdown with real-world context →

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

✓

Enable MFA Delete on the S3 bucket.

Options A and C are correct because enabling MFA Delete requires multi-factor authentication for delete operations, adding protection against accidental or malicious deletions, and enabling versioning allows recovery of deleted or overwritten objects by restoring previous versions. Option B is incorrect because a bucket policy that denies s3:DeleteObject to all users would prevent any deletion, including legitimate ones, and does not target accidental deletions specifically. Option D is incorrect because a lifecycle policy to transition objects to Amazon S3 Glacier only changes the storage class, offering no protection against deletion. Option E is incorrect because AWS CloudTrail provides auditing of API calls but does not prevent deletion.

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.

✓
Enable MFA Delete on the S3 bucket.
Why this is correct
MFA Delete requires multi-factor authentication to permanently delete objects.
Related concept
Authentication checks who the user is.
✗
Apply an S3 bucket policy that denies s3:DeleteObject for all users.
Why it's wrong here
Bucket policy would block all deletions, which may be too restrictive.
✓
Enable versioning on the S3 bucket.
Why this is correct
Versioning allows recovery of deleted objects by restoring previous versions.
Related concept
Authentication checks who the user is.
✗
Configure a lifecycle policy to transition objects to S3 Glacier.
Why it's wrong here
Lifecycle policies do not prevent deletion.
✗
Enable AWS CloudTrail to log all S3 API calls.
Why it's wrong here
CloudTrail provides audit logs but does not prevent deletion.

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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

Quick reference

AWS S3 Storage Class Comparison

Storage Class	Min Duration	Retrieval	Use Case
S3 Standard	None	Immediate	Frequently accessed data
S3 Standard-IA	30 days	Immediate	Infrequent access, rapid retrieval
S3 One Zone-IA	30 days	Immediate	Non-critical infrequent data
S3 Intelligent-Tiering	None	Immediate–hours	Unknown or changing access patterns
S3 Glacier Instant	90 days	Milliseconds	Archive with instant retrieval
S3 Glacier Flexible	90 days	Minutes–hours	Archive, flexible retrieval
S3 Glacier Deep Archive	180 days	Hours	Long-term compliance archive

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 SOA-C02 questions on access control and AAA configuration.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Reliability and Business Continuity — This question tests Reliability and Business Continuity — Authentication checks who the user is..

What is the correct answer to this question?

The correct answer is: Enable MFA Delete on the S3 bucket. — Options A and C are correct because enabling MFA Delete requires multi-factor authentication for delete operations, adding protection against accidental or malicious deletions, and enabling versioning allows recovery of deleted or overwritten objects by restoring previous versions. Option B is incorrect because a bucket policy that denies s3:DeleteObject to all users would prevent any deletion, including legitimate ones, and does not target accidental deletions specifically. Option D is incorrect because a lifecycle policy to transition objects to Amazon S3 Glacier only changes the storage class, offering no protection against deletion. Option E is incorrect because AWS CloudTrail provides auditing of API calls but does not prevent deletion.

What should I do if I get this SOA-C02 question wrong?

What is the key concept behind this question?

Authentication checks who the user is.

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