Google PCA Practice Question: Managing Implementation and Ensuring Solution and Operations Reliability
This PCA practice question tests your understanding of managing implementation and ensuring solution and operations reliability. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Your company uses HA VPN to connect on-premises to Google Cloud. You need to ensure the VPN connection meets a 99.99% SLA. Which configuration is required?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Two Cloud VPN gateways in different regions, each with two tunnels to the same on-premises peer gateway.
HA VPN provides 99.99% SLA when configured with two Cloud VPN gateways (one per region) and two tunnels per gateway (four tunnels total) from each gateway to the on-premises peer gateway. Each gateway uses a different external IP. A single VPN gateway with two tunnels does not meet the SLA requirement because the gateway itself is a single point of failure.
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.
✗
A single Cloud VPN gateway with two tunnels to the same on-premises peer gateway.
Why it's wrong here
Single gateway is a single point of failure; SLA requires two gateways.
✗
Two Cloud VPN gateways in the same region, each with one tunnel.
Why it's wrong here
Same region still risks zone failure; regional diversity is needed for 99.99% SLA.
✗
One Cloud VPN gateway with four tunnels to the same on-premises peer gateway.
Why it's wrong here
Still a single gateway; SLA requires two gateways.
✓
Two Cloud VPN gateways in different regions, each with two tunnels to the same on-premises peer gateway.
Why this is correct
This configuration provides redundancy and meets the 99.99% SLA.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Identify which PCA 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 Implementation and Ensuring Solution and Operations Reliability — This question tests Managing Implementation and Ensuring Solution and Operations Reliability — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Two Cloud VPN gateways in different regions, each with two tunnels to the same on-premises peer gateway. — HA VPN provides 99.99% SLA when configured with two Cloud VPN gateways (one per region) and two tunnels per gateway (four tunnels total) from each gateway to the on-premises peer gateway. Each gateway uses a different external IP. A single VPN gateway with two tunnels does not meet the SLA requirement because the gateway itself is a single point of failure.
What should I do if I get this PCA question wrong?
Identify which PCA 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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Question Discussion
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