Quick Answer
The correct answer is page faults per second and swap usage. Swap usage directly signals memory pressure because when the operating system moves memory pages to disk, it indicates the database’s working set no longer fits in RAM, causing severe performance degradation. Page faults per second measures how often the database must retrieve memory pages from disk; a sustained high rate confirms the buffer pool is too small for the workload, pinpointing a memory bottleneck. On the CompTIA Cloud+ CV0-004 exam, this tests your ability to differentiate between memory and disk I/O issues—a common trap is confusing high disk activity with a storage bottleneck when it is actually caused by excessive paging. Remember the mnemonic “Swap and Faults, Memory Halts” to recall that both metrics together reveal insufficient RAM for the database workload.
This CV0-004 practice question tests your understanding of operations and support. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
Which TWO metrics should be monitored to determine if a cloud database is experiencing a memory bottleneck?
Network bytes sent
Why wrong: Network metric, not memory.
Swap usage
High swap usage indicates memory pressure.
Average disk queue length
Why wrong: Disk queue length relates to storage I/O.
Disk latency
Why wrong: Disk latency relates to storage performance.
Page faults per second
High page faults indicate insufficient memory.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Swap usage
Swap usage (B) is a direct indicator of memory pressure; when the operating system moves memory pages to disk, it signals that the database cannot fit its working set in RAM, causing severe performance degradation. Page faults per second (E) measures how often the database must retrieve memory pages from disk; a sustained high rate indicates the buffer pool is too small for the workload, confirming a memory bottleneck.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Network bytes sent
Why it's wrong here
Network metric, not memory.
Swap usage
Why this is correct
High swap usage indicates memory pressure.
Related concept
Read the scenario before looking for a memorised answer.
Average disk queue length
Why it's wrong here
Disk queue length relates to storage I/O.
Disk latency
Why it's wrong here
Disk latency relates to storage performance.
Page faults per second
Why this is correct
High page faults indicate insufficient memory.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
CompTIA often tests the distinction between memory-specific metrics (swap usage, page faults) and storage-related metrics (disk queue length, latency), trapping candidates who confuse high disk activity with memory pressure.
Detailed technical explanation
In cloud databases like Amazon RDS or Azure SQL Database, the operating system's swap (paging file) usage and page faults per second are monitored via guest OS metrics (e.g., Performance Monitor counters or CloudWatch agent). A memory bottleneck occurs when the database buffer cache (e.g., InnoDB buffer pool or SQL Server buffer pool) cannot hold frequently accessed pages, forcing the OS to page out less active memory; this can cascade into increased I/O wait times and transaction log contention, even if disk latency appears normal.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Operations and Support — study guide chapter
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FAQ
Operations and Support — This question tests Operations and Support — Read the scenario before looking for a memorised answer..
The correct answer is: Swap usage — Swap usage (B) is a direct indicator of memory pressure; when the operating system moves memory pages to disk, it signals that the database cannot fit its working set in RAM, causing severe performance degradation. Page faults per second (E) measures how often the database must retrieve memory pages from disk; a sustained high rate indicates the buffer pool is too small for the workload, confirming a memory bottleneck.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 30, 2026
This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.
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