Question 48 of 518

Coordinate rolling updates →hardMultiple ChoiceObjective-mapped

EX294 Coordinate rolling updates Practice Question

This EX294 practice question tests your understanding of coordinate rolling updates. 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.

You are managing a critical web application deployed on OpenShift with 12 replicas. The application must maintain at least 10 replicas available during updates to meet an SLA. You initiate a rolling update using the default strategy, but the rollout is progressing slowly because only 2 new pods are created at a time, causing a prolonged update duration. You need to speed up the rollout without violating the SLA (10 available replicas). The current Deployment configuration has maxSurge: 25% (3 pods) and maxUnavailable: 25% (3 pods). You have permission to update the DeploymentConfig during the active rollout. Which action should you take?

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.

Question 1hardmultiple choice

Full question →

A
Cancel the current rollout, set maxSurge to 4 and maxUnavailable to 2, then start a new rollout.
Why wrong: Cancelling and restarting causes unnecessary delays and potential service disruption. Modifying the deployment and resuming is more efficient.
B
Set maxSurge to 50% and maxUnavailable to 50%, then run 'oc rollout resume'.
Why wrong: This would allow up to 6 unavailable pods, leaving only 6 available, violating the SLA of 10 available.
C
Set maxSurge to 5 and maxUnavailable to 2, then run 'oc rollout retry'.
Why wrong: Retry would cancel and restart the rollout, causing unnecessary disruption. Also maxSurge=5 is less aggressive but still acceptable, but retry is not needed; resume is correct.
D
Set maxSurge to 10 and maxUnavailable to 2, then run 'oc rollout resume'.
maxUnavailable=2 ensures at most 2 pods down, keeping 10 available. maxSurge=10 allows more new pods in parallel, speeding the rollout. Modifying during rollout is valid; resume continues the update.

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

✓

Set maxSurge to 10 and maxUnavailable to 2, then run 'oc rollout resume'.

Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.

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.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Cancel the current rollout, set maxSurge to 4 and maxUnavailable to 2, then start a new rollout.
Why it's wrong here
Cancelling and restarting causes unnecessary delays and potential service disruption. Modifying the deployment and resuming is more efficient.
✗
Set maxSurge to 50% and maxUnavailable to 50%, then run 'oc rollout resume'.
Why it's wrong here
This would allow up to 6 unavailable pods, leaving only 6 available, violating the SLA of 10 available.
✗
Set maxSurge to 5 and maxUnavailable to 2, then run 'oc rollout retry'.
Why it's wrong here
Retry would cancel and restart the rollout, causing unnecessary disruption. Also maxSurge=5 is less aggressive but still acceptable, but retry is not needed; resume is correct.
✓
Set maxSurge to 10 and maxUnavailable to 2, then run 'oc rollout resume'.
Why this is correct
maxUnavailable=2 ensures at most 2 pods down, keeping 10 available. maxSurge=10 allows more new pods in parallel, speeding the rollout. Modifying during rollout is valid; resume continues the update.
Clue confirmation
The clue word "least" 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 practitioner preparing for the EX294 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.

What to study next

Got this wrong? Here's your next step.

Identify which EX294 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.

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FAQ

Questions learners often ask

What does this EX294 question test?

Coordinate rolling updates — This question tests Coordinate rolling updates — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Set maxSurge to 10 and maxUnavailable to 2, then run 'oc rollout resume'.

What should I do if I get this EX294 question wrong?

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?

Read the scenario before looking for a memorised answer.

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