This PCA practice question tests your understanding of manage implementation of cloud architecture. 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 large enterprise is migrating their on-premises data center to Google Cloud. They have hundreds of VMs and need to minimize network latency between on-prem and cloud during migration. They have high bandwidth requirements. Which connectivity solution should they use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Cloud Interconnect
Dedicated connection with high bandwidth and low latency.
Cloud VPN
Why wrong: Uses public internet, latency not guaranteed.
Cloud NAT
Why wrong: Used for outbound internet access, not on-prem connectivity.
Peering with Google
Why wrong: Public peering, no dedicated bandwidth SLA.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Cloud Interconnect
Cloud Interconnect provides a dedicated, high-bandwidth, low-latency connection between on-premises data centers and Google Cloud, bypassing the public internet. This is ideal for large-scale migrations with hundreds of VMs where minimizing latency and ensuring consistent throughput is critical.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Cloud Interconnect
Why this is correct
Dedicated connection with high bandwidth and low latency.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
Cloud VPN
Why it's wrong here
Uses public internet, latency not guaranteed.
Cloud NAT
Why it's wrong here
Used for outbound internet access, not on-prem connectivity.
Peering with Google
Why it's wrong here
Public peering, no dedicated bandwidth SLA.
Common exam traps
The trap here is that candidates often confuse Cloud VPN with Cloud Interconnect, assuming VPN is sufficient for high-bandwidth, low-latency needs, but VPN's reliance on the public internet introduces jitter and bandwidth constraints that make it unsuitable for large-scale migrations.
Detailed technical explanation
Cloud Interconnect supports two types: Dedicated Interconnect (physical cross-connects at colocation facilities) and Partner Interconnect (via supported service providers). It uses VLAN attachments to extend your on-prem network into a VPC, supporting up to 10 Gbps per circuit (Dedicated) or 50 Mbps–10 Gbps (Partner), with 99.99% availability SLA. During migration, you can leverage Cloud Router with BGP for dynamic routing and failover, ensuring seamless traffic flow without manual route updates.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
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FAQ
Manage implementation of cloud architecture — This question tests Manage implementation of cloud architecture — Read the scenario before looking for a memorised answer..
The correct answer is: Cloud Interconnect — Cloud Interconnect provides a dedicated, high-bandwidth, low-latency connection between on-premises data centers and Google Cloud, bypassing the public internet. This is ideal for large-scale migrations with hundreds of VMs where minimizing latency and ensuring consistent throughput is critical.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This PCA 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 PCA exam.
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