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Defining Services :Reliable Google Cloud Infrastructure: Design and Process (Preparing for Google Cloud Certification: Cloud Architect Professional Certificate) Answers 2025

Question 1

Which best describes an SLO?

❌ It is a contract with end users
🟩 It is a target measure you want your service to achieve
❌ It is a short, measurable description of an application feature
❌ It is a measurable KPI

Explanation:

An SLO (Service Level Objective) is a target for service reliability (e.g., 99.9% availability), not a contractual agreement.
Contracts with users are SLAs, not SLOs.


Question 2

Using SMART criteria, which below would be the least effective KPI?

🟩 User experience design
❌ Page views per hour
❌ User sign-ups per month
❌ Clicks per session

Explanation:

“User experience design” is not specific, not measurable, and not time-bound.
All other options are measurable metrics.


Question 3

Which most accurately describes a user story?

❌ A narrative describing steps users take
❌ A requirement of the system
❌ A short description of a typical person using the system
🟩 A short description of a feature written from the user’s point of view

Explanation:

User stories follow the classic template:
“As a <user>, I want <feature>, so that <benefit>.”
They describe features—not personas, not usage steps.


🧾 Summary Table

Q# Correct Answer Key Concept
1 Target measure (SLO) SLO = service quality target
2 User experience design Not measurable (fails SMART)
3 Feature from user’s viewpoint User story definition