DBS-C01 Management and Operations Practice Question
This DBS-C01 practice question tests your understanding of management and operations. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 an Amazon Redshift cluster with a single node. The cluster is used for reporting. Recently, queries have become slow, and the cluster's disk space is 80% full. Which action should be taken to improve query performance and manage storage?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Resize the cluster to include additional compute nodes.
Option A is correct because adding nodes distributes data and workload, improving performance and increasing storage capacity. Option B is wrong because VACUUM only reclaims space from deleted rows; it does not add capacity. Option C is wrong because compression is applied during COPY; re-encoding existing data requires unloading and reloading. Option D is wrong because DISTSTYLE ALL replicates data to all nodes, which increases storage usage and may not help.
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.
✓
Resize the cluster to include additional compute nodes.
Why this is correct
Adding nodes distributes data across more slices, improving query parallelism and providing more storage.
Related concept
Read the scenario before looking for a memorised answer.
✗
Enable compression on all columns using the ENCODE AUTO option.
Why it's wrong here
Compression is set at table creation; existing data needs to be re-ingested to apply compression.
✗
Modify the table's distribution style to DISTSTYLE ALL for all tables.
Why it's wrong here
DISTSTYLE ALL copies full tables to each node, increasing storage use and not solving the capacity issue.
✗
Run the VACUUM command to reclaim space from deleted rows.
Why it's wrong here
VACUUM frees space but does not increase total capacity; disk is 80% full due to data volume.
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 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.
Identify which DBS-C01 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.
Management and Operations — This question tests Management and Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Resize the cluster to include additional compute nodes. — Option A is correct because adding nodes distributes data and workload, improving performance and increasing storage capacity. Option B is wrong because VACUUM only reclaims space from deleted rows; it does not add capacity. Option C is wrong because compression is applied during COPY; re-encoding existing data requires unloading and reloading. Option D is wrong because DISTSTYLE ALL replicates data to all nodes, which increases storage usage and may not help.
What should I do if I get this DBS-C01 question wrong?
Identify which DBS-C01 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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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This DBS-C01 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 DBS-C01 exam.
Question Discussion
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