PCNE Implementing Hybrid Interconnectivity Practice Question
A company is deploying a Dedicated Interconnect with a 10 Gbps circuit to Google Cloud. They need to ensure high availability. Which configuration is required by Google Cloud to meet the high availability SLA?
⚠ Common exam trap
Watch out — candidates often think a single Cloud Router with multiple VLAN attachments is sufficient, but Google Cloud requires the Cloud Routers themselves to be in different zones to avoid a single point of failure at the zone level.
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
✓
Provision two VLAN attachments on two separate Cloud Routers in different zones
To meet the high availability SLA for Dedicated Interconnect, Google Cloud requires at least two VLAN attachments, each on a separate Cloud Router in different zones. This ensures that if one zone or Cloud Router fails, traffic can still flow through the other attachment, providing redundancy. A single VLAN attachment or a single Cloud Router does not meet the 99.99% availability SLA because it creates a single point of failure.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Combine Dedicated Interconnect with a Cloud VPN tunnel for failover
Why it's wrong here
Cloud VPN is not required for Dedicated Interconnect HA; two VLAN attachments suffice.
- ✗
Use Partner Interconnect instead of Dedicated Interconnect
Why it's wrong here
Partner Interconnect is a different service and not required for Dedicated Interconnect HA.
- ✓
Provision two VLAN attachments on two separate Cloud Routers in different zones
Why this is correct
Two VLAN attachments in different zones provide redundancy and meet the HA SLA.
- ✗
Provision a single VLAN attachment on one Cloud Router
Why it's wrong here
A single VLAN attachment does not provide redundancy.
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JA
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.