- A
The target cluster for restore must exist before the restore operation.
You must create the target cluster before initiating a restore.
- B
Backups can be used to migrate data across projects.
Why wrong: Bigtable backups are limited to the same project. Cross-project migration requires export/import.
- C
Backups are performed at the cluster level and include all tables in the cluster.
Bigtable backups are for an entire cluster, capturing all tables.
- D
A backup can be restored to a different cluster in a different region.
You can restore a backup to any cluster in the same project, even in a different region.
- E
Backups are incremental, capturing only changes since the last backup.
Why wrong: Bigtable backups are full backups, not incremental.
Question 621 of 980
PCD Practice Question: Manage a Solution that Can Span Multiple Database Systems
This PCD practice question tests your understanding of manage a solution that can span multiple database systems. 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 Cloud Bigtable for a time-series application. They need to create a backup that can be restored to a different cluster in a different region for disaster recovery. Which THREE statements about Bigtable backups are correct?
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
✓
The target cluster for restore must exist before the restore operation.
Option A is correct because when restoring a Cloud Bigtable backup, the target cluster must already exist in the specified region. The restore operation does not create a new cluster; it populates an existing cluster with the backed-up data. This ensures the cluster's configuration (e.g., node count, storage type) is predefined and meets the recovery requirements.
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 target cluster for restore must exist before the restore operation.
Why this is correct
You must create the target cluster before initiating a restore.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Backups can be used to migrate data across projects.
Why it's wrong here
Bigtable backups are limited to the same project. Cross-project migration requires export/import.
- ✓
Backups are performed at the cluster level and include all tables in the cluster.
Why this is correct
Bigtable backups are for an entire cluster, capturing all tables.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
A backup can be restored to a different cluster in a different region.
Why this is correct
You can restore a backup to any cluster in the same project, even in a different region.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Backups are incremental, capturing only changes since the last backup.
Why it's wrong here
Bigtable backups are full backups, not incremental.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Bigtable backups are incremental or can be used across projects, when in fact they are full snapshots restricted to the same project.
Detailed technical explanation
How to think about this question
Cloud Bigtable backups are stored as full table snapshots in Cloud Storage, using the same underlying SSTable format. Restoring to a different cluster in a different region is supported, but the target cluster must be in the same project and have sufficient capacity. The restore operation is asynchronous and can take hours for large tables, during which the backup remains available for other operations.
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 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.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this PCD question test?
Manage a Solution that Can Span Multiple Database Systems — This question tests Manage a Solution that Can Span Multiple Database Systems — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The target cluster for restore must exist before the restore operation. — Option A is correct because when restoring a Cloud Bigtable backup, the target cluster must already exist in the specified region. The restore operation does not create a new cluster; it populates an existing cluster with the backed-up data. This ensures the cluster's configuration (e.g., node count, storage type) is predefined and meets the recovery requirements.
What should I do if I get this PCD question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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 PCD 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 PCD exam.
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