- A
Use Cloud CDN to cache content at edge locations
Reduces requests to origin, lowering egress from the origin region.
- B
Enable VPC Flow Logs to analyze traffic
Why wrong: Flow Logs do not reduce costs.
- C
Deploy backends in multiple regions and use a global load balancer
Why wrong: This reduces egress by serving from closest region, but global LB itself does not reduce egress; it may increase due to health checks.
- D
Use a regional load balancer when users are concentrated in one region
Avoids cross-region traffic if all users are in the same region as the backend.
- E
Use Premium Tier networking
Why wrong: Premium Tier uses Google's global network, which can be more expensive than Standard Tier for egress.
Question 8 of 1,000
PCNE Practice Question: Managing, Monitoring, and Optimising Network Operations
This PCNE practice question tests your understanding of managing, monitoring, and optimising network operations. 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 company is designing a multi-region application on GCP and wants to optimize egress costs. Which TWO of the following strategies will reduce cross-region egress costs? (Choose two.)
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
✓
Use Cloud CDN to cache content at edge locations
Using Cloud CDN caches content at edge locations, reducing the need to fetch from the origin region. Using a regional load balancer instead of a global one can avoid cross-region traffic if users are in the same region as the backend. However, global LB with CDN is also good; but the question specifically asks for cost reduction. Cloud CDN reduces egress from origin. Regional LB avoids cross-region traffic altogether if the user and backend are in the same region.
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.
- ✓
Use Cloud CDN to cache content at edge locations
Why this is correct
Reduces requests to origin, lowering egress from the origin region.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Enable VPC Flow Logs to analyze traffic
Why it's wrong here
Flow Logs do not reduce costs.
- ✗
Deploy backends in multiple regions and use a global load balancer
Why it's wrong here
This reduces egress by serving from closest region, but global LB itself does not reduce egress; it may increase due to health checks.
- ✓
Use a regional load balancer when users are concentrated in one region
Why this is correct
Avoids cross-region traffic if all users are in the same region as the backend.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Premium Tier networking
Why it's wrong here
Premium Tier uses Google's global network, which can be more expensive than Standard Tier for egress.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
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.
- →
Managing, Monitoring, and Optimising Network Operations — study guide chapter
Learn the concepts, then practise the questions
- →
Managing, Monitoring, and Optimising Network Operations practice questions
Targeted practice on this topic area only
- →
All PCNE questions
1,000 questions across all exam domains
- →
Google Professional Cloud Network Engineer study guide
Full concept coverage aligned to exam objectives
- →
PCNE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCNE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Configuring Network Services practice questions
Practise PCNE questions linked to Configuring Network Services.
Implementing Hybrid Interconnectivity practice questions
Practise PCNE questions linked to Implementing Hybrid Interconnectivity.
Managing, Monitoring, and Optimising Network Operations practice questions
Practise PCNE questions linked to Managing, Monitoring, and Optimising Network Operations.
Designing, Planning, and Prototyping a GCP Network practice questions
Practise PCNE questions linked to Designing, Planning, and Prototyping a GCP Network.
Implementing VPC Instances practice questions
Practise PCNE questions linked to Implementing VPC Instances.
Implementing network security practice questions
Practise PCNE questions linked to Implementing network security.
Implementing a Virtual Private Cloud practice questions
Practise PCNE questions linked to Implementing a Virtual Private Cloud.
PCNE fundamentals practice questions
Practise PCNE questions linked to PCNE fundamentals.
PCNE scenario practice questions
Practise PCNE questions linked to PCNE scenario.
PCNE troubleshooting practice questions
Practise PCNE questions linked to PCNE troubleshooting.
Practice this exam
Start a free PCNE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this PCNE question test?
Managing, Monitoring, and Optimising Network Operations — This question tests Managing, Monitoring, and Optimising Network Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Cloud CDN to cache content at edge locations — Using Cloud CDN caches content at edge locations, reducing the need to fetch from the origin region. Using a regional load balancer instead of a global one can avoid cross-region traffic if users are in the same region as the backend. However, global LB with CDN is also good; but the question specifically asks for cost reduction. Cloud CDN reduces egress from origin. Regional LB avoids cross-region traffic altogether if the user and backend are in the same region.
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.
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.