ACE Practice Question: A financial trading platform must support…
This ACE practice question tests your understanding of a financial trading platform must support…. 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 financial trading platform must support globally distributed, strongly consistent SQL transactions at thousands of writes per second, with no downtime for planned maintenance. Which GCP database service meets all these requirements?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
Distractor review
Cloud Bigtable
Bigtable offers massive scalability for analytics workloads but doesn't support SQL or full ACID transactions required by a financial trading platform.
Distractor review
Cloud Firestore
Cloud Firestore provides strong consistency for document operations but doesn't support SQL queries or the write throughput of a high-frequency trading platform.
Best answer
Cloud Spanner
Cloud Spanner uniquely combines externally consistent ACID transactions, horizontal write scalability, SQL support, and a 99.999% SLA — all required for financial trading platforms.
Distractor review
Cloud SQL with synchronous read replicas
Cloud SQL scales reads with replicas but doesn't scale writes horizontally — it's limited to vertical scaling for write throughput.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related ACE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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Question 6
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FAQ
Questions learners often ask
What does this ACE question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Cloud Spanner — Cloud Spanner is the only GCP database providing external consistency (the strongest consistency level), horizontal write scalability, a SQL interface, and 99.999% uptime SLA for multi-region configurations. Cloud SQL achieves high availability but not horizontal write scale. Bigtable scales but lacks SQL and full ACID transactions.
What should I do if I get this ACE question wrong?
Identify which ACE 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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This ACE 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 ACE exam.