PCNE Configuring Network Services Practice Question
A network engineer is designing a hybrid cloud architecture connecting an on-premises data center to Google Cloud via Dedicated Interconnect. The on-premises network uses BGP for dynamic routing. The engineer needs to configure Cloud Router to exchange routes with the on-premises router. Which two configuration steps are required? (Choose two.)
⚠ Common exam trap
Google Cloud often tests the misconception that Cloud Router must use the same ASN as the on-premises router, but eBGP requires different ASNs, and Cloud Router does not support iBGP for Dedicated Interconnect.
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
✓
Enable the BGP session on the Cloud Router and configure the peer IP address and ASN.
Cloud Router uses BGP to dynamically exchange routes with the on-premises router over Dedicated Interconnect. Enabling the BGP session requires configuring the peer IP address (the on-premises router's interface IP) and the on-premises ASN, which allows the two routers to establish a BGP peering and exchange prefixes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Enable the BGP session on the Cloud Router and configure the peer IP address and ASN.
Why this is correct
A BGP session is needed to exchange routes with the on-premises router.
- ✓
Create a VLAN attachment for the Interconnect connection.
Why this is correct
A VLAN attachment is necessary to attach the Interconnect to the VPC.
- ✗
Configure a static route in Google Cloud VPC with the on-premises prefix.
Why it's wrong here
Static routes are not required when BGP is used.
- ✗
Assign a primary and secondary IP range to the Cloud Router interface.
Why it's wrong here
Cloud Router interface uses a single IP address, not primary/secondary ranges.
- ✗
Configure the Cloud Router with the same ASN as the on-premises router.
Why it's wrong here
ASNs can be different; private ASNs are commonly used.
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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.