This PCD practice question tests your understanding of managing application performance monitoring. 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 developer wants to profile their application's CPU and memory usage to identify performance bottlenecks. Which TWO Google Cloud services should they use?
Cloud Logging
Why wrong: Cloud Logging collects logs, not profiling data.
Cloud Debugger
Why wrong: Cloud Debugger inspects state at a point in time, not profiling.
Cloud Profiler
Cloud Profiler provides CPU and heap profiling to identify bottlenecks.
Cloud Trace
Why wrong: Cloud Trace captures request latency but not CPU/memory usage per function.
Cloud Monitoring
Why wrong: Cloud Monitoring shows system-level metrics but not code profiling.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Cloud Profiler
Cloud Profiler (Option C) is the correct service for profiling CPU and memory usage because it continuously gathers and analyzes call stacks and resource consumption across your application, identifying the functions that consume the most resources. This directly addresses the developer's goal of pinpointing performance bottlenecks in CPU and memory.
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.
Cloud Logging
Why it's wrong here
Cloud Logging collects logs, not profiling data.
Cloud Debugger
Why it's wrong here
Cloud Debugger inspects state at a point in time, not profiling.
Cloud Profiler
Why this is correct
Cloud Profiler provides CPU and heap profiling to identify bottlenecks.
Related concept
Read the scenario before looking for a memorised answer.
Cloud Trace
Why it's wrong here
Cloud Trace captures request latency but not CPU/memory usage per function.
Cloud Monitoring
Why it's wrong here
Cloud Monitoring shows system-level metrics but not code profiling.
Common exam traps
The trap here is that candidates often confuse Cloud Monitoring (which shows VM-level CPU/memory metrics) with Cloud Profiler (which shows application-level function-by-function CPU/memory consumption), leading them to pick Cloud Monitoring instead of Cloud Profiler.
Trap categories for this question
Command / output trap
Cloud Monitoring shows system-level metrics but not code profiling.
Detailed technical explanation
Cloud Profiler uses statistical sampling of call stacks at a configurable rate (e.g., 10 samples per second) to build a flame graph that visualizes resource consumption by function. Under the hood, it leverages the `pprof` format and can profile applications written in Java, Go, Node.js, Python, and Ruby, automatically deducing the source code locations of hot spots. In a real-world scenario, a developer might discover that a seemingly innocuous string concatenation in a loop is causing 40% of CPU usage, which would be invisible in Cloud Monitoring's VM-level metrics.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
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FAQ
Managing application performance monitoring — This question tests Managing application performance monitoring — Read the scenario before looking for a memorised answer..
The correct answer is: Cloud Profiler — Cloud Profiler (Option C) is the correct service for profiling CPU and memory usage because it continuously gathers and analyzes call stacks and resource consumption across your application, identifying the functions that consume the most resources. This directly addresses the developer's goal of pinpointing performance bottlenecks in CPU and memory.
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 25, 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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