- A
Normal network behavior; small packet loss is expected
The Performance Dashboard shows actual network conditions; some packet loss is normal.
- B
A misconfigured firewall rule blocking ICMP
Why wrong: ICMP blocking would show 100% loss for pings, not partial loss.
- C
A BGP session flap on Cloud Router
Why wrong: BGP flaps would affect routes, not packet loss between regions.
- D
Cloud Armor blocking traffic
Why wrong: Cloud Armor operates at the application layer, not affecting packet-level loss.
Question 423 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 network engineer is investigating packet loss between two GCP regions using the Performance Dashboard. The dashboard shows high packet loss but no corresponding latency increase. What is the most likely cause of this packet loss?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"most likely"Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
✓
Normal network behavior; small packet loss is expected
The Performance Dashboard measures packet loss and latency between regions. Packet loss without latency increase often indicates transient congestion or minor issues that cause drops but not queuing delay. It is normal to see some loss; the dashboard shows real measurements.
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.
- ✓
Normal network behavior; small packet loss is expected
Why this is correct
The Performance Dashboard shows actual network conditions; some packet loss is normal.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
A misconfigured firewall rule blocking ICMP
Why it's wrong here
ICMP blocking would show 100% loss for pings, not partial loss.
- ✗
A BGP session flap on Cloud Router
Why it's wrong here
BGP flaps would affect routes, not packet loss between regions.
- ✗
Cloud Armor blocking traffic
Why it's wrong here
Cloud Armor operates at the application layer, not affecting packet-level loss.
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.
Trap categories for this question
Command / output trap
ICMP blocking would show 100% loss for pings, not partial loss.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
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
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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: Normal network behavior; small packet loss is expected — The Performance Dashboard measures packet loss and latency between regions. Packet loss without latency increase often indicates transient congestion or minor issues that cause drops but not queuing delay. It is normal to see some loss; the dashboard shows real measurements.
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.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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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