- A
Configure a cache key policy that includes the query string
Often needed to ensure proper caching per request, though not always required; but recommended.
- B
Generate a signed URL key
Why wrong: Only needed for private content, not required for basic caching.
- C
Set the cache mode to FORCE_CACHE_ALL on the backend service
Forces caching of all responses.
- D
Create a backend bucket instead of a backend service
Why wrong: Backend bucket is for Cloud Storage; for Cloud Run, you use backend service.
- E
Enable Cloud CDN on the backend service
Required to activate CDN.
Question 820 of 982
PCNE Configuring Network Services Practice Question
This PCNE practice question tests your understanding of configuring network services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 cloud engineer is configuring a Global External HTTPS Load Balancer with a backend service that targets a Cloud Run service via a serverless NEG. They want to enable Cloud CDN and set cache behavior to cache all responses regardless of origin headers. Which THREE steps are required? (Choose three.)
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
✓
Configure a cache key policy that includes the query string
To force cache all, you set cache mode to FORCE_CACHE_ALL. You also need to enable Cloud CDN on the backend service and set the appropriate cache key policy. Signed URL key is not required for basic caching. The URL map is not modified for caching.
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.
- ✓
Configure a cache key policy that includes the query string
Why this is correct
Often needed to ensure proper caching per request, though not always required; but recommended.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Generate a signed URL key
Why it's wrong here
Only needed for private content, not required for basic caching.
- ✓
Set the cache mode to FORCE_CACHE_ALL on the backend service
Why this is correct
Forces caching of all responses.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a backend bucket instead of a backend service
Why it's wrong here
Backend bucket is for Cloud Storage; for Cloud Run, you use backend service.
- ✓
Enable Cloud CDN on the backend service
Why this is correct
Required to activate CDN.
Related concept
Read the scenario before looking for a memorised answer.
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.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which PCNE 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.
- →
Configuring Network Services — study guide chapter
Learn the concepts, then practise the questions
- →
Configuring Network Services practice questions
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Google Professional Cloud Network Engineer study guide
Full concept coverage aligned to exam objectives
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FAQ
Questions learners often ask
What does this PCNE question test?
Configuring Network Services — This question tests Configuring Network Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure a cache key policy that includes the query string — To force cache all, you set cache mode to FORCE_CACHE_ALL. You also need to enable Cloud CDN on the backend service and set the appropriate cache key policy. Signed URL key is not required for basic caching. The URL map is not modified for caching.
What should I do if I get this PCNE question wrong?
Identify which PCNE 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.
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 PCNE 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 PCNE exam.
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