- A
The instance must have a backup window configured within the last 2 hours
Why wrong: The backup window is for automatic backups, not directly for PITR. PITR uses transaction logs, not backups.
- B
The instance must have at least one automatic backup taken after the desired restore time
Why wrong: Automatic backups are not needed for PITR; PITR replays transaction logs from a backup, but you can restore from any point within the log retention period.
- C
Binary logging must be enabled, and the transaction log retention period must cover the desired restore time
PITR requires binary logging enabled and a transaction log retention period that includes the restore time (default 7 days).
- D
The instance must be stopped before initiating the restore
Why wrong: You do not need to stop the instance; you can restore to a new instance while the original continues running.
PCDOE Practice Question: Design for Reliability, Scalability, and Disaster Recovery
This PCDOE practice question tests your understanding of design for reliability, scalability, and disaster recovery. 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 has a Cloud SQL for MySQL instance with point-in-time recovery (PITR) enabled. They need to restore the database to a specific time exactly 2 hours ago to recover from an accidental data deletion. What is the minimum requirement for this operation?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Binary logging must be enabled, and the transaction log retention period must cover the desired restore time
PITR in Cloud SQL relies on binary log (binlog) backups. To restore to a specific time, you need to have binary logging enabled and transaction log retention set appropriately. The binlog retention period determines how far back you can perform PITR. The default is 7 days, but you can configure it. The backup window and number of automatic backups are not directly related to PITR granularity.
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.
- ✗
The instance must have a backup window configured within the last 2 hours
Why it's wrong here
The backup window is for automatic backups, not directly for PITR. PITR uses transaction logs, not backups.
- ✗
The instance must have at least one automatic backup taken after the desired restore time
Why it's wrong here
Automatic backups are not needed for PITR; PITR replays transaction logs from a backup, but you can restore from any point within the log retention period.
- ✓
Binary logging must be enabled, and the transaction log retention period must cover the desired restore time
Why this is correct
PITR requires binary logging enabled and a transaction log retention period that includes the restore time (default 7 days).
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The instance must be stopped before initiating the restore
Why it's wrong here
You do not need to stop the instance; you can restore to a new instance while the original continues running.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which PCDOE 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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Design for Reliability, Scalability, and Disaster Recovery — study guide chapter
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FAQ
Questions learners often ask
What does this PCDOE question test?
Design for Reliability, Scalability, and Disaster Recovery — This question tests Design for Reliability, Scalability, and Disaster Recovery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Binary logging must be enabled, and the transaction log retention period must cover the desired restore time — PITR in Cloud SQL relies on binary log (binlog) backups. To restore to a specific time, you need to have binary logging enabled and transaction log retention set appropriately. The binlog retention period determines how far back you can perform PITR. The default is 7 days, but you can configure it. The backup window and number of automatic backups are not directly related to PITR granularity.
What should I do if I get this PCDOE question wrong?
Identify which PCDOE 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: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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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Last reviewed: Jul 4, 2026
This PCDOE practice question is part of Courseiva's free Google Cloud 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 PCDOE exam.
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