← DOP-C02·Amazon Web Services

Question 336 of 1,750

SDLC Automation →mediumMultiple ChoiceObjective-mapped

Why Are CodePipeline Approval Notifications Not Sent?

This DOP-C02 practice question tests your understanding of sdlc automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 AWS CodePipeline with a manual approval stage before deploying to production. The approval notification is sent via Amazon SNS. The approvers report that they are not receiving the email notifications. What should the DevOps engineer check first?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

A
Confirm that the email subscriptions to the SNS topic have been confirmed by clicking the link in the initial confirmation email.
SNS requires subscription confirmation before sending messages.
B
Ensure that the IAM role for CodePipeline has permission to publish to the SNS topic.
Why wrong: CodePipeline publishes to SNS using its service role; if permissions were missing, the pipeline would fail.
C
Verify that the SNS topic's subscription has a filter policy that matches the approval event.
Why wrong: Filter policies are optional and not required for delivery.
D
Check the email recipients' mailbox quota to see if it is full.
Why wrong: While possible, it is not the first thing to check.

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

✓

Confirm that the email subscriptions to the SNS topic have been confirmed by clicking the link in the initial confirmation email.

Amazon SNS requires that email subscribers confirm their subscription by clicking the link in the initial confirmation email before they can receive notifications. If the approvers never confirmed the subscription, the SNS topic will not deliver any messages to them, even though the pipeline and IAM permissions are correctly configured. This is the most common cause of missing SNS email notifications and should be the first check.

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.

✓
Confirm that the email subscriptions to the SNS topic have been confirmed by clicking the link in the initial confirmation email.
Why this is correct
SNS requires subscription confirmation before sending messages.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Ensure that the IAM role for CodePipeline has permission to publish to the SNS topic.
Why it's wrong here
CodePipeline publishes to SNS using its service role; if permissions were missing, the pipeline would fail.
✗
Verify that the SNS topic's subscription has a filter policy that matches the approval event.
Why it's wrong here
Filter policies are optional and not required for delivery.
✗
Check the email recipients' mailbox quota to see if it is full.
Why it's wrong here
While possible, it is not the first thing to check.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often jump to IAM permissions or SNS configuration details, overlooking the fundamental requirement that email subscriptions must be explicitly confirmed before any notifications can be delivered.

Detailed technical explanation

How to think about this question

When an email address is subscribed to an SNS topic, SNS sends a subscription confirmation email with a unique token. The subscriber must click the confirmation link (which sends a request to the SNS ConfirmSubscription endpoint) within three days, or the subscription remains 'PendingConfirmation' and no messages are delivered. This is a deliberate anti-spam measure defined in the AWS SNS API. In a real-world scenario, if the confirmation email was caught by a spam filter or the link was never clicked, the subscription stays unconfirmed indefinitely.

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.

TExam Day Tips

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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this DOP-C02 question test?

SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Confirm that the email subscriptions to the SNS topic have been confirmed by clicking the link in the initial confirmation email. — Amazon SNS requires that email subscribers confirm their subscription by clicking the link in the initial confirmation email before they can receive notifications. If the approvers never confirmed the subscription, the SNS topic will not deliver any messages to them, even though the pipeline and IAM permissions are correctly configured. This is the most common cause of missing SNS email notifications and should be the first check.

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

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

Are there clue words in this question I should notice?

Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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This DOP-C02 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 DOP-C02 exam.