hardMultiple ChoiceObjective-mapped
200-901 Practice Question: In the context of microservices for network…
In the context of microservices for network automation, which pattern ensures that each service has a separate database to avoid tight coupling?
⚠ Common exam trap
Cisco often tests the Database per service pattern by contrasting it with the Shared Database anti-pattern, where candidates mistakenly think sharing a database simplifies development, but the exam emphasizes that it creates tight coupling and violates microservices design principles.
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
✓
Database per service
The Database per service pattern ensures each microservice owns its private database, preventing tight coupling by eliminating shared schema dependencies. This aligns with the bounded context principle in domain-driven design, where each service manages its own data model independently, enabling autonomous deployments and scaling.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Circuit breaker
Why it's wrong here
Circuit breaker handles failures, not database architecture.
- ✓
Database per service
Why this is correct
This pattern gives each microservice its own database, promoting loose coupling.
- ✗
API gateway
Why it's wrong here
API gateway is a single entry point for microservices, not related to database separation.
- ✗
Shared database
Why it's wrong here
Shared database creates tight coupling between services.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-901 practice question is part of Courseiva's free Cisco 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 200-901 exam.