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 |