easyMultiple Choice
Google PCA Practice Question: Connect their on-premises data center to Google…
A company wants to connect their on-premises data center to Google Cloud with a dedicated, low-latency, and highly available connection. They need bandwidth of 10 Gbps. Which option should they choose?
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
✓
Dedicated Cloud Interconnect
Dedicated Cloud Interconnect provides direct physical connections between on-premises and Google's network with speeds up to 100 Gbps per link. It offers high availability and low latency. HA VPN is over the public internet, Partner Interconnect depends on a partner, and Classic VPN is older.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Classic VPN
Why it's wrong here
Classic VPN runs over the public internet, so it cannot deliver the dedicated 10 Gbps path or the consistent low latency the scenario demands. It is tempting because Classic VPN does provide encrypted IPsec tunnels between on-premises networks and Google Cloud, and it would be the right choice for lower-bandwidth connectivity where a dedicated circuit is unnecessary.
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HA VPN over the public internet
Why it's wrong here
HA VPN tunnels traverse the public internet, so throughput and latency vary with internet conditions and cannot guarantee a dedicated 10 Gbps circuit. VPN suits encrypted connectivity where dedicated bandwidth is unnecessary; Dedicated Interconnect provides the private circuit required.
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Partner Cloud Interconnect
Why it's wrong here
Partner Cloud Interconnect reaches Google Cloud through a service provider's network, adding a third party and typically offering sub-10 Gbps capacities per connection. It suits organisations lacking a colocation facility; direct Dedicated Interconnect delivers the required dedicated 10 Gbps.
- ✓
Dedicated Cloud Interconnect
Why this is correct
Dedicated Cloud Interconnect provides a direct physical connection via a colocation facility, delivering the 10 Gbps bandwidth, low latency and high availability the stem demands. Partner Interconnect cannot guarantee that capacity, and VPNs traverse the public internet with variable latency.
Go deeper
Related to this question
Learn chapter
Data Migration and Transfer Services
Key term
Latency
Latency is the time delay between a request being sent over a network and the response being received, often measured in milliseconds.
Key term
Partner Interconnect
Partner Interconnect is a Google Cloud service that allows you to connect your on-premises network to Google Cloud through a supported third-party service provider.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.