Quick Answer
The answer is Cloud Interconnect, the GCP service that provides a dedicated, low-latency connection from an on-premises data center to Google Cloud. This is correct because Cloud Interconnect bypasses the public internet entirely, offering a private, direct path that ensures consistent bandwidth and lower latency than VPN-based alternatives, with two deployment models: Dedicated Interconnect for a direct physical link at a colocation facility, and Partner Interconnect for connectivity through a supported service provider. On the Google Professional Cloud Network Engineer exam, this question tests your understanding of hybrid networking options, often appearing alongside scenarios that contrast Cloud Interconnect with Cloud VPN or Carrier Peering; a common trap is confusing Partner Interconnect with a standard VPN, but remember that Partner Interconnect still uses a dedicated VLAN attachment rather than the public internet. Memory tip: think “Dedicated for direct, Partner for provider” to quickly distinguish the two flavors.
This PCNE practice question tests your understanding of designing, planning, and prototyping a gcp network. 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.
Which GCP service provides a dedicated, low-latency connection from an on-premises data center to Google Cloud?
Cloud Router
Why wrong: Manages routing, not connectivity.
Cloud Interconnect
Provides dedicated bandwidth and lower latency.
Cloud VPN
Why wrong: Uses internet, not dedicated.
VPC Network
Why wrong: A virtual network, not a physical connection.
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, low-latency connection from an on-premises data center to Google Cloud, bypassing the public internet. It offers two options: Dedicated Interconnect (a direct physical connection via a colocation facility) and Partner Interconnect (via a supported service provider). This ensures consistent bandwidth and lower latency compared to VPN-based solutions.
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 Router
Why it's wrong here
Manages routing, not connectivity.
Cloud Interconnect
Why this is correct
Provides dedicated bandwidth and lower latency.
Related concept
Read the scenario before looking for a memorised answer.
Cloud VPN
Why it's wrong here
Uses internet, not dedicated.
VPC Network
Why it's wrong here
A virtual network, not a physical connection.
Common exam traps
The trap here is that candidates often confuse Cloud Router (which handles routing) with the actual connection service, or assume Cloud VPN provides dedicated bandwidth, when in fact only Cloud Interconnect offers a dedicated, low-latency link that bypasses the public internet.
Detailed technical explanation
Cloud Interconnect uses BGP for dynamic routing and supports up to 10 Gbps per circuit (Dedicated) or 50 Mbps to 10 Gbps (Partner). It operates at Layer 2 (Ethernet) for Dedicated Interconnect, requiring a colocation facility, while Partner Interconnect uses MPLS or VLAN attachments. A real-world scenario is a financial services firm needing sub-5ms latency for real-time trading data, which Cloud Interconnect can guarantee, whereas Cloud VPN would introduce jitter and higher latency over the public internet.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Designing, planning, and prototyping a GCP network — This question tests Designing, planning, and prototyping a GCP network — Read the scenario before looking for a memorised answer..
The correct answer is: Cloud Interconnect — Cloud Interconnect provides a dedicated, low-latency connection from an on-premises data center to Google Cloud, bypassing the public internet. It offers two options: Dedicated Interconnect (a direct physical connection via a colocation facility) and Partner Interconnect (via a supported service provider). This ensures consistent bandwidth and lower latency compared to VPN-based solutions.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 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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