- A
Configure static routes for failover
Why wrong: Static routes do not provide automatic failover; BGP is required.
- B
Enable BGP on both tunnels
BGP allows dynamic routing and automatic failover when one tunnel goes down.
- C
Configure both tunnels with the same peer IP address on the on-premises side
Why wrong: Each tunnel must have a unique peer IP for redundancy.
- D
Use the same pre-shared key for both tunnels
Why wrong: Pre-shared keys can be the same or different; not a requirement for failover.
- E
Create two VPN tunnels, one from each Cloud VPN gateway interface
HA VPN gateway has two interfaces, each with its own external IP, and two tunnels are required.
Question 493 of 1,000
PCNE Implementing Hybrid Interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 highly available hybrid network using HA VPN. They need to ensure that if one VPN tunnel fails, traffic automatically fails over to the other tunnel. Which TWO configurations are required? (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
✓
Enable BGP on both tunnels
HA VPN requires two tunnels from two interfaces, each with its own external IP, and BGP sessions on both tunnels. The on-premises side must also have two separate peer IPs.
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 static routes for failover
Why it's wrong here
Static routes do not provide automatic failover; BGP is required.
- ✓
Enable BGP on both tunnels
Why this is correct
BGP allows dynamic routing and automatic failover when one tunnel goes down.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure both tunnels with the same peer IP address on the on-premises side
Why it's wrong here
Each tunnel must have a unique peer IP for redundancy.
- ✗
Use the same pre-shared key for both tunnels
Why it's wrong here
Pre-shared keys can be the same or different; not a requirement for failover.
- ✓
Create two VPN tunnels, one from each Cloud VPN gateway interface
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 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.
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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 BGP on both tunnels — HA VPN requires two tunnels from two interfaces, each with its own external IP, and BGP sessions on both tunnels. The on-premises side must also have two separate peer IPs.
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.
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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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