- A
Increase the MED value on the active tunnel to make it less preferred
Why wrong: Increasing MED on the active tunnel would make it less preferred, potentially causing failover, but not load balancing.
- B
Configure both tunnels with the same BGP AS number on the on-premises side
Why wrong: Same AS number would cause BGP to reject routes from the second tunnel due to loop prevention.
- C
Configure static routes with equal cost for both tunnels
Why wrong: Static routes would not work with BGP; the tunnels use dynamic routing.
- D
Enable equal-cost multipath (ECMP) on the Cloud Router
ECMP allows both VPN tunnels to be used simultaneously for traffic engineering.
Question 74 of 1,000
PCNE Implementing Hybrid Interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. 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 company uses High Availability VPN (HA VPN) with two tunnels and BGP to connect to an on-premises network. They notice traffic only flows through one tunnel. They want to ensure both tunnels are used simultaneously. What should they do?
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
✓
Enable equal-cost multipath (ECMP) on the Cloud Router
To use both tunnels simultaneously, ECMP must be enabled in the VPC. By default, HA VPN with BGP uses active-passive if the on-premises router uses a lower local preference for one path. ECMP can be enabled on the Cloud Router.
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.
- ✗
Increase the MED value on the active tunnel to make it less preferred
Why it's wrong here
Increasing MED on the active tunnel would make it less preferred, potentially causing failover, but not load balancing.
- ✗
Configure both tunnels with the same BGP AS number on the on-premises side
Why it's wrong here
Same AS number would cause BGP to reject routes from the second tunnel due to loop prevention.
- ✗
Configure static routes with equal cost for both tunnels
Why it's wrong here
Static routes would not work with BGP; the tunnels use dynamic routing.
- ✓
Enable equal-cost multipath (ECMP) on the Cloud Router
Why this is correct
ECMP allows both VPN tunnels to be used simultaneously for traffic engineering.
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 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.
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Implementing Hybrid Interconnectivity — study guide chapter
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FAQ
Questions learners often ask
What does this PCNE question test?
Implementing Hybrid Interconnectivity — This question tests Implementing Hybrid Interconnectivity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable equal-cost multipath (ECMP) on the Cloud Router — To use both tunnels simultaneously, ECMP must be enabled in the VPC. By default, HA VPN with BGP uses active-passive if the on-premises router uses a lower local preference for one path. ECMP can be enabled on the Cloud Router.
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
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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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