Question 1,708 of 1,711
DEA-C01 Data Store Management Practice Question
A company uses Amazon Redshift for data warehousing. The data team notices that queries are slow due to high disk usage on the cluster. They need to free up space without deleting any data. What should they do?
⚠ Common exam trap
Watch out — candidates often confuse the VACUUM command with a deep copy, assuming VACUUM reclaims all unused space, but VACUUM only handles space from deleted rows and does not fully reorganize unsorted data to reduce high disk usage.
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
✓
Run a deep copy to re-sort and reclaim space
A deep copy recreates the table with optimal sort order and reclaims unused space by reorganizing data blocks. This process effectively frees up disk space without deleting any data, addressing the high disk usage issue.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change the table's sort keys
Why it's wrong here
Changing sort keys requires recreating tables and does not immediately free space.
- ✓
Run a deep copy to re-sort and reclaim space
Why this is correct
Deep copy reorganizes data and reclaims disk space effectively.
- ✗
Run VACUUM command
Why it's wrong here
VACUUM reclaims space from deleted rows but may not be sufficient.
- ✗
Add more nodes to the cluster
Why it's wrong here
This increases capacity but does not free space on existing nodes.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jul 4, 2026
This DEA-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 DEA-C01 exam.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.