PCNE Practice Question: Designing, Planning, and Prototyping a GCP Network
A company is designing a hybrid connectivity solution between an on-premises data center and Google Cloud. They have a high bandwidth requirement of 20 Gbps and need a service level agreement (SLA) of 99.99% availability. Which connectivity option should they choose?
⚠ Common exam trap
Candidates often confuse Partner Interconnect with Dedicated Interconnect, assuming that two 10 Gbps connections from a partner automatically provide a 99.99% SLA from Google, but only Dedicated Interconnect offers a Google-backed SLA when using redundant connections.
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 Interconnect with two 10 Gbps connections
Dedicated Interconnect provides direct, private connections between your on-premises network and Google Cloud, supporting up to 10 Gbps per circuit. By using two 10 Gbps connections in an active-active or active-passive configuration, you can achieve the required 20 Gbps aggregate bandwidth and meet the 99.99% SLA, as Google guarantees this SLA when you have at least two redundant connections.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cloud VPN with two tunnels each using 1 Gbps
Why it's wrong here
Cloud VPN is limited to 3 Gbps aggregate and no SLA.
- ✓
Dedicated Interconnect with two 10 Gbps connections
Why this is correct
Dedicated Interconnect provides 99.99% SLA with redundant connections.
- ✗
Direct Peering
Why it's wrong here
Direct Peering has no SLA and not recommended for production workloads.
- ✗
Partner Interconnect with two 10 Gbps connections
Why it's wrong here
Partner Interconnect maximum is 10 Gbps per VLAN attachment and SLA may not meet 99.99%.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.