Quick Answer
The answer is Dedicated Interconnect, as it is the only Google Cloud interconnect solution that supports a high-bandwidth, high-availability SLA of 99.99% while meeting a 50 Gbps burst requirement. This is correct because Dedicated Interconnect provides direct, private physical connections using 10 or 100 Gbps links, allowing you to aggregate up to 80 Gbps per connection, and when configured with redundant links and BGP sessions, it delivers the 99.99% availability SLA. On the Google Professional Cloud Network Engineer exam, this question tests your understanding of how interconnect solutions map to specific SLA tiers and bandwidth thresholds—a common trap is confusing Partner Interconnect, which offers lower SLAs and bandwidth caps, with Dedicated Interconnect. Remember that VLAN tagging and BGP support on the on-premises router are prerequisites for Dedicated Interconnect, not deciding factors. Memory tip: think "Dedicated for high speed and SLA"—if you need 50 Gbps and 99.99%, you must go dedicated.
This PCNE practice question tests your understanding of implementing hybrid interconnectivity. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 needs to connect their on-premises data center to Google Cloud with a consistent, high-availability connection that offers 99.99% availability SLA. The on-premises router supports VLAN tagging and BGP. They expect to burst up to 50 Gbps peak traffic. Which interconnect solution should they choose?
Cloud VPN with dynamic routing
Why wrong: Cloud VPN SLA is 99.9% and bandwidth limited to 3 Gbps per tunnel.
Dedicated Interconnect
Dedicated Interconnect offers 99.99% SLA and supports multiple 10/40/100 Gbps connections.
Partner Interconnect
Why wrong: Partner Interconnect SLA is 99.9%.
HA VPN
Why wrong: HA VPN SLA is 99.99% but bandwidth limited to 3 Gbps per tunnel, not enough for 50 Gbps.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Dedicated Interconnect
Dedicated Interconnect provides a direct, private physical connection between the on-premises data center and Google Cloud, supporting up to 80 Gbps per connection (via 10 or 100 Gbps links) and offering a 99.99% availability SLA when configured with redundant links and BGP sessions. The on-premises router's support for VLAN tagging and BGP aligns perfectly with Dedicated Interconnect's requirements for 802.1Q VLANs and eBGP peering, making it the only option that meets the 50 Gbps burst requirement and high-availability SLA.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Cloud VPN with dynamic routing
Why it's wrong here
Cloud VPN SLA is 99.9% and bandwidth limited to 3 Gbps per tunnel.
Dedicated Interconnect
Why this is correct
Dedicated Interconnect offers 99.99% SLA and supports multiple 10/40/100 Gbps connections.
Related concept
Read the scenario before looking for a memorised answer.
Partner Interconnect
Why it's wrong here
Partner Interconnect SLA is 99.9%.
HA VPN
Why it's wrong here
HA VPN SLA is 99.99% but bandwidth limited to 3 Gbps per tunnel, not enough for 50 Gbps.
Common exam traps
Google Cloud often tests the misconception that HA VPN can achieve high throughput by aggregating multiple tunnels, but in Google Cloud, each HA VPN tunnel is limited to 3 Gbps and cannot be combined to exceed that per-VPC limit, making it unsuitable for 50 Gbps bursts.
Detailed technical explanation
Dedicated Interconnect uses 802.1Q VLAN tagging to multiplex multiple VLAN attachments over a single physical circuit, with each VLAN attachment supporting up to 10 Gbps (or 100 Gbps on a 100 Gbps link). BGP sessions are established per VLAN attachment using eBGP with private AS numbers (64512-65534) or public ASNs, and the 99.99% SLA requires at least two redundant physical connections in different edge availability domains (e.g., two separate metro locations). In a real-world scenario, a company bursting to 50 Gbps would need either five 10 Gbps VLAN attachments or a single 100 Gbps link with multiple VLANs, both of which are only possible with Dedicated Interconnect.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Implementing hybrid interconnectivity — study guide chapter
Learn the concepts, then practise the questions
Implementing hybrid interconnectivity practice questions
Targeted practice on this topic area only
All PCNE questions
497 questions across all exam domains
Google Professional Cloud Network Engineer study guide
Full concept coverage aligned to exam objectives
PCNE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise PCNE questions linked to Designing, planning, and prototyping a GCP network.
Practise PCNE questions linked to Implementing hybrid interconnectivity.
Practise PCNE questions linked to Configuring network services.
Practise PCNE questions linked to Implementing network security.
Practise PCNE questions linked to Implementing a Virtual Private Cloud.
Practise PCNE questions linked to PCNE fundamentals.
Practise PCNE questions linked to PCNE scenario.
Practise PCNE questions linked to PCNE troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Implementing hybrid interconnectivity — This question tests Implementing hybrid interconnectivity — Read the scenario before looking for a memorised answer..
The correct answer is: Dedicated Interconnect — Dedicated Interconnect provides a direct, private physical connection between the on-premises data center and Google Cloud, supporting up to 80 Gbps per connection (via 10 or 100 Gbps links) and offering a 99.99% availability SLA when configured with redundant links and BGP sessions. The on-premises router's support for VLAN tagging and BGP aligns perfectly with Dedicated Interconnect's requirements for 802.1Q VLANs and eBGP peering, making it the only option that meets the 50 Gbps burst requirement and high-availability SLA.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 30, 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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.