- A
Set up a VPN tunnel for redundancy.
Why wrong: VPN is an alternative, not a requirement for Dedicated Interconnect.
- B
Create a VLAN attachment in the Google Cloud Console.
The VLAN attachment is the logical connection between your on-premises network and Google Cloud.
- C
Configure on-premises DNS forwarding to Cloud DNS.
Why wrong: DNS forwarding is a separate configuration unrelated to interconnect provisioning.
- D
Configure the Cloud Router BGP session before ordering the circuit.
Why wrong: The BGP session is configured after the VLAN attachment is created.
Question 249 of 982
PCNE Implementing Hybrid Interconnectivity Practice Question
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. 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.
A company wants to connect their on-premises network to Google Cloud with a Dedicated Interconnect. They have ordered a circuit from a telecom provider and need to complete the setup. Which of the following steps is required during the provisioning process?
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
✓
Create a VLAN attachment in the Google Cloud Console.
When provisioning a Dedicated Interconnect, after the telecom provider has delivered the circuit to the meet-me room, you must create a VLAN attachment (formerly called a VLAN attachment or interconnect attachment) in the Google Cloud Console. This attachment defines the VLAN and the Cloud Router that will establish BGP peering with your on-premises router, making it the essential step to complete the Layer 2 and Layer 3 connectivity.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Set up a VPN tunnel for redundancy.
Why it's wrong here
VPN is an alternative, not a requirement for Dedicated Interconnect.
- ✓
Create a VLAN attachment in the Google Cloud Console.
Why this is correct
The VLAN attachment is the logical connection between your on-premises network and Google Cloud.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure on-premises DNS forwarding to Cloud DNS.
Why it's wrong here
DNS forwarding is a separate configuration unrelated to interconnect provisioning.
- ✗
Configure the Cloud Router BGP session before ordering the circuit.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that you must configure the Cloud Router BGP session before the circuit is ordered, but in reality, the BGP session is configured after the VLAN attachment is created and the physical circuit is ready.
Detailed technical explanation
How to think about this question
Under the hood, a VLAN attachment in Google Cloud represents a single VLAN and its associated BGP session over the Dedicated Interconnect link. Each VLAN attachment is tied to a Cloud Router, which manages BGP peering with the on-premises router using eBGP (typically with private AS numbers). In real-world scenarios, you might create multiple VLAN attachments for different environments (e.g., production and development) over the same physical interconnect, each with its own BGP session and routing policies.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
Visual reference
What to study next
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FAQ
Questions learners often ask
What does this PCNE question test?
Implementing Hybrid Interconnectivity — This question tests Implementing Hybrid Interconnectivity — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a VLAN attachment in the Google Cloud Console. — When provisioning a Dedicated Interconnect, after the telecom provider has delivered the circuit to the meet-me room, you must create a VLAN attachment (formerly called a VLAN attachment or interconnect attachment) in the Google Cloud Console. This attachment defines the VLAN and the Cloud Router that will establish BGP peering with your on-premises router, making it the essential step to complete the Layer 2 and Layer 3 connectivity.
What should I do if I get this PCNE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 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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