- A
Two VLAN attachments to two different edge availability domains.
Using multiple VLAN attachments across different edge availability domains provides redundancy and high availability, meeting the 99.99% SLA.
- B
BGP sessions from each on-premises router to each Cloud Router.
BGP sessions allow dynamic routing and fast failover between redundant connections, essential for high availability.
- C
Cloud CDN to cache content and reduce latency.
Why wrong: Cloud CDN is for content delivery and does not affect network connectivity or bandwidth to GCP.
- D
Dedicated Interconnect connections with at least two redundant links.
Dedicated Interconnect supports up to 10 Gbps per link and provides 99.99% availability when configured with redundant connections.
- E
Cloud VPN tunnels with multiple gateways for failover.
Why wrong: Cloud VPN is limited to ~3 Gbps throughput per tunnel and does not offer a 99.99% SLA, so it cannot meet the bandwidth and availability requirements.
Google PCA Manage and provision cloud infrastructure Practice Question
This PCA practice question tests your understanding of manage and provision cloud infrastructure. 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 designing a hybrid network architecture connecting an on-premises data center to Google Cloud. They need high availability (99.99% SLA) and bandwidth up to 10 Gbps. They also need to use their existing MPLS circuits. Which THREE components should they include in the design? (Choose three.)
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
Two VLAN attachments to two different edge availability domains.
Option A is correct because VLAN attachments in Google Cloud are associated with edge availability domains (EADs), which represent physically independent failure domains within a zone. By attaching two VLAN attachments to two different EADs, the design ensures that a failure in one EAD does not affect the other, supporting the 99.99% SLA requirement. This is a key component of a highly available Dedicated Interconnect or Partner Interconnect setup.
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.
- ✓
Two VLAN attachments to two different edge availability domains.
Why this is correct
Using multiple VLAN attachments across different edge availability domains provides redundancy and high availability, meeting the 99.99% SLA.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
BGP sessions from each on-premises router to each Cloud Router.
Why this is correct
BGP sessions allow dynamic routing and fast failover between redundant connections, essential for high availability.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud CDN to cache content and reduce latency.
Why it's wrong here
Cloud CDN is for content delivery and does not affect network connectivity or bandwidth to GCP.
- ✓
Dedicated Interconnect connections with at least two redundant links.
Why this is correct
Dedicated Interconnect supports up to 10 Gbps per link and provides 99.99% availability when configured with redundant connections.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Cloud VPN tunnels with multiple gateways for failover.
Why it's wrong here
Cloud VPN is limited to ~3 Gbps throughput per tunnel and does not offer a 99.99% SLA, so it cannot meet the bandwidth and availability requirements.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Cloud CDN or Cloud VPN as viable options for high-bandwidth, high-availability hybrid connectivity, but they fail to meet the 10 Gbps throughput and 99.99% SLA requirements, which only Dedicated Interconnect with redundant links and proper BGP configuration can satisfy.
Detailed technical explanation
How to think about this question
Dedicated Interconnect provides direct physical connections between an on-premises network and Google Cloud, supporting up to 10 Gbps per link (or 100 Gbps with newer configurations). The 99.99% SLA requires at least two redundant links, each terminating on different edge availability domains, which are physically separate routers within a Google Cloud region. BGP sessions are established between on-premises routers and Cloud Routers to exchange routes and enable dynamic failover; each VLAN attachment uses a separate BGP session to ensure path diversity.
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
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
- →
Manage and provision cloud infrastructure — study guide chapter
Learn the concepts, then practise the questions
- →
Manage and provision cloud infrastructure practice questions
Targeted practice on this topic area only
- →
All PCA questions
509 questions across all exam domains
- →
Google Professional Cloud Architect study guide
Full concept coverage aligned to exam objectives
- →
PCA practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCA practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Design and plan a cloud solution architecture practice questions
Practise PCA questions linked to Design and plan a cloud solution architecture.
Manage and provision cloud infrastructure practice questions
Practise PCA questions linked to Manage and provision cloud infrastructure.
Design for security and compliance practice questions
Practise PCA questions linked to Design for security and compliance.
Analyze and optimize technical and business processes practice questions
Practise PCA questions linked to Analyze and optimize technical and business processes.
Manage implementation of cloud architecture practice questions
Practise PCA questions linked to Manage implementation of cloud architecture.
Ensure solution and operations reliability practice questions
Practise PCA questions linked to Ensure solution and operations reliability.
PCA fundamentals practice questions
Practise PCA questions linked to PCA fundamentals.
PCA scenario practice questions
Practise PCA questions linked to PCA scenario.
PCA troubleshooting practice questions
Practise PCA questions linked to PCA troubleshooting.
Practice this exam
Start a free PCA practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this PCA question test?
Manage and provision cloud infrastructure — This question tests Manage and provision cloud infrastructure — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Two VLAN attachments to two different edge availability domains. — Option A is correct because VLAN attachments in Google Cloud are associated with edge availability domains (EADs), which represent physically independent failure domains within a zone. By attaching two VLAN attachments to two different EADs, the design ensures that a failure in one EAD does not affect the other, supporting the 99.99% SLA requirement. This is a key component of a highly available Dedicated Interconnect or Partner Interconnect setup.
What should I do if I get this PCA 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.
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 25, 2026
This PCA 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 PCA 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.