- A
PARTNER
Why wrong: PARTNER attachment type is for Layer 2 connectivity where the customer manages BGP.
- B
MANAGED
Why wrong: There is no MANAGED attachment type in Google Cloud Interconnect.
- C
DEDICATED
Why wrong: DEDICATED attachment type is for Dedicated Interconnect, not Partner Interconnect.
- D
PARTNER_PROVIDER
PARTNER_PROVIDER attachment type is for Layer 3 connectivity where the service provider manages BGP.
Question 848 of 1,000
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 is using Partner Interconnect with a service provider that offers Layer 3 connectivity. The service provider manages the BGP sessions. The engineer needs to create a VLAN attachment on the Google side. Which attachment type should they choose?
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
✓
PARTNER_PROVIDER
For Partner Interconnect, when the service provider manages Layer 3 (BGP), the VLAN attachment type must be PARTNER_PROVIDER. The PARTNER type is for Layer 2 connectivity where the customer manages BGP.
Key principle: A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
PARTNER
Why it's wrong here
PARTNER attachment type is for Layer 2 connectivity where the customer manages BGP.
- ✗
MANAGED
Why it's wrong here
There is no MANAGED attachment type in Google Cloud Interconnect.
- ✗
DEDICATED
Why it's wrong here
DEDICATED attachment type is for Dedicated Interconnect, not Partner Interconnect.
- ✓
PARTNER_PROVIDER
Common exam traps
Common exam trap: an active trunk can still block the VLAN you need
A trunk being up does not prove every VLAN is crossing it. Check allowed VLAN lists, native VLAN mismatch, VLAN existence and access-port assignment.
Detailed technical explanation
How to think about this question
VLAN questions usually combine access-port and trunking clues. The key is to identify whether the issue is local to one switchport, caused by the trunk, or caused by the VLAN not existing where it needs to exist.
KKey Concepts to Remember
- Access ports place end devices into a single VLAN.
- Trunk ports carry multiple VLANs between switches.
- Allowed VLAN lists decide which VLANs can cross a trunk.
- Native VLAN mismatch can create confusing symptoms.
TExam Day Tips
- Use show vlan brief to verify access VLANs.
- Use show interfaces trunk to verify trunk state and allowed VLANs.
- Do not treat every same-VLAN issue as a routing problem.
Key takeaway
A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. A trunk being up does not mean the VLAN is allowed across it. Always verify the allowed VLAN list and whether the VLAN exists on both switches. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Visual reference
What to study next
Got this wrong? Here's your next step.
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related PCNE questions on switching, trunking, and access-port configuration.
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Implementing Hybrid Interconnectivity — study guide chapter
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FAQ
Questions learners often ask
What does this PCNE question test?
Implementing Hybrid Interconnectivity — This question tests Implementing Hybrid Interconnectivity — Access ports place end devices into a single VLAN..
What is the correct answer to this question?
The correct answer is: PARTNER_PROVIDER — For Partner Interconnect, when the service provider manages Layer 3 (BGP), the VLAN attachment type must be PARTNER_PROVIDER. The PARTNER type is for Layer 2 connectivity where the customer manages BGP.
What should I do if I get this PCNE question wrong?
Review VLAN allowed lists, native VLAN mismatch detection, and how to verify VLAN membership with show vlan brief and show interfaces trunk. Then practise related PCNE questions on switching, trunking, and access-port configuration.
What is the key concept behind this question?
Access ports place end devices into a single VLAN.
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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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