PCNE Implementing Hybrid Interconnectivity Practice Question
What is the maximum number of VLAN attachments that can be configured on a single 10 Gbps Dedicated Interconnect connection?
⚠ Common exam trap
Candidates often confuse the VLAN attachment limit for Dedicated Interconnect with the higher limits of Partner Interconnect or assume the limit scales linearly with bandwidth, leading them to select 16 or 2 instead of the correct 8.
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
✓
8
A single 10 Gbps Dedicated Interconnect connection supports a maximum of 8 VLAN attachments. This limit is defined by Google Cloud's interconnect architecture, where each VLAN attachment consumes a portion of the 10 Gbps bandwidth and is mapped to a unique VLAN ID. The 8-attachment cap ensures predictable performance and avoids oversubscription on the physical link.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
16
Why it's wrong here
16 is too high; that limit applies to higher bandwidth interconnects.
- ✗
4
Why it's wrong here
4 is incorrect; the limit is 8.
- ✗
2
Why it's wrong here
2 is too low.
- ✓
8
Why this is correct
8 VLAN attachments per 10 Gbps interconnect.
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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.