A team is designing a new web application for managing network device configurations. The UI layer, business logic, and data access are currently tightly coupled in the same classes. The team anticipates frequent UI changes and wants to isolate the business logic so it can be tested independently. Which design pattern is most appropriate to achieve this separation?

Model-View-Controller (MVC) pattern

A team of five developers is working on a network monitoring application. They currently commit directly to the 'main' branch, and integration issues are discovered only during release. The team wants to improve code quality and reduce integration problems. Which version control practice is most effective to adopt?

Create a single long-lived branch for all development and merge to main only at release time.

Use a code formatting tool to ensure consistent style across the team.

Use feature branches with pull requests and require at least one review before merging.

Continue committing to main but require all developers to run tests locally before committing.

A team is developing a new microservice that processes network telemetry data. The service has a complex data transformation pipeline. The team wants to ensure that the pipeline is maintainable and that failures can be diagnosed in production. Which combination of practices best achieves this?

Add verbose logging at every line of code to capture all possible state.

Write unit tests for each transformation step and add structured logging with correlation IDs to trace a message through the pipeline.

Write only integration tests that test the entire pipeline end-to-end.

Rely on the orchestration platform's built-in health checks to detect failures.

CiscoCertified DevNet Professional

Domain 1Objective 5

Evaluate an Application Design and Implementation Considering Maintainability 350-901 Practice Questions (Page 4)

Part of the 1.0 Software Development and Design domain, which accounts for 20% of the 350-901 exam. Cisco does not publish an official question count, but from its 120-minute exam (~50–80 total, ~10–16 in this domain), expect 1–1 from this objective — we provide 38 practice questions to prepare you well beyond it. (estimate)

38questions here

8free pages

10concepts

20%of the exam

Questions 16–20

16foundation · easy
Which testing practice helps ensure that new changes do not introduce regressions in existing functionality?
Select an answer first
17application · medium
A team is designing a new web application for managing network device configurations. The UI layer, business logic, and data access are currently tightly coupled in the same classes. The team anticipates frequent UI changes and wants to isolate the business logic so it can be tested independently. Which design pattern is most appropriate to achieve this separation?
Select an answer first
18application · medium
A team of five developers is working on a network monitoring application. They currently commit directly to the 'main' branch, and integration issues are discovered only during release. The team wants to improve code quality and reduce integration problems. Which version control practice is most effective to adopt?
Select an answer first
19expert · hard
A team is developing a new microservice that processes network telemetry data. The service has a complex data transformation pipeline. The team wants to ensure that the pipeline is maintainable and that failures can be diagnosed in production. Which combination of practices best achieves this?
Select an answer first
20foundation · easy
Which design pattern is specifically used to decouple the creation of an object from its usage, thereby improving maintainability?
Select an answer first

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Evaluate an Application Design and Implementation Considering Maintainability 350-901 Practice Questions (Page 4)

Questions 16–20

Which testing practice helps ensure that new changes do not introduce regressions in existing functionality?

A team is developing a new microservice that processes network telemetry data. The service has a complex data transformation pipeline. The team wants to ensure that the pipeline is maintainable and that failures can be diagnosed in production. Which combination of practices best achieves this?

Which design pattern is specifically used to decouple the creation of an object from its usage, thereby improving maintainability?

Keep studying — 1.0 Software Development and Design