Google PCA Practice Question: Managing Implementation and Ensuring Solution and Operations Reliability
Your company plans to connect an on-premises data center to Google Cloud with a Dedicated Interconnect. You need to ensure high availability for the connection. What is the minimum configuration required to meet a 99.99% SLA for Dedicated Interconnect?
⚠ Common exam trap
The trap is assuming that any two connections (e.g., one Dedicated plus one Partner, or two VLAN attachments on one circuit) satisfy the redundancy requirement; the exam expects you to know that the 99.99% SLA specifically requires two Dedicated Interconnect circuits in different edge availability domains with separate Cloud Routers.
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 Dedicated Interconnect circuits, each in a different edge availability domain, with a Cloud Router for each connection
To achieve the 99.99% availability SLA for Dedicated Interconnect, Google requires at least two Dedicated Interconnect connections in two different edge availability domains (metro availability zones), each terminating on a separate Cloud Router. This topology ensures that a single circuit or router failure does not take down connectivity. The 99.99% SLA is explicitly tied to this redundant, diverse-path configuration.
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 Dedicated Interconnect circuits, each in a different edge availability domain, with a Cloud Router for each connection
Why this is correct
Two circuits in separate edge availability domains give physical path redundancy, and a Cloud Router per connection satisfies the topology requirement for the 99.99% Dedicated Interconnect SLA. A single circuit or shared router only reaches 99.9%.
- ✗
A single Dedicated Interconnect circuit with a Cloud Router configured for BGP advertisements
Why it's wrong here
A single circuit is a single point of failure regardless of BGP configuration, capping availability at 99.9%; 99.99% demands two circuits in distinct metropolitan areas. It tempts because Cloud Router with BGP is genuinely required for dynamic routing and failover, just not sufficient alone.
- ✗
One Dedicated Interconnect circuit and one Partner Interconnect connection as a backup
Why it's wrong here
Mixing Dedicated and Partner Interconnect does not qualify for the 99.99% Dedicated Interconnect SLA, which requires two Dedicated circuits in separate metropolitan areas. It tempts because Partner Interconnect is a legitimate backup path for redundancy, and suits sites lacking the bandwidth or colocation needed for dedicated circuits.
- ✗
One Dedicated Interconnect circuit with two VLAN attachments on the same circuit
Why it's wrong here
Two VLAN attachments on one circuit share that circuit's fate, so a single failure still drops the connection; 99.99% requires two circuits in separate metropolitan areas, each with its own attachment. It tempts because dual attachments do provide Cloud Router redundancy for 99.9% topologies.
Go deeper
Related to this question
Learn chapter
Data Migration and Transfer Services
Key term
Cloud Router
A cloud router is a virtual networking device in a cloud environment that manages traffic between different virtual networks and connects them to on-premises networks using dynamic routing protocols.
Key term
Dedicated Interconnect
A Dedicated Interconnect is a direct, private physical connection between your on-premises network and a cloud provider's network, bypassing the public internet for faster, more reliable, and more secure data transfer.
About these practice questions
This PCA question is part of Courseiva's 807-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Google Cloud exam blueprint
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.