A team is reviewing a legacy application that has a large, untested module for parsing network device outputs. The module is critical but rarely changed. The team has limited time and must decide where to focus refactoring efforts. Which approach best prioritizes technical debt reduction?

Defer all refactoring until the next major release to avoid risk.

Refactor all modules equally to distribute the effort fairly.

Prioritize the critical, untested module because its high risk and low test coverage make it the most expensive debt to carry.

Prioritize a rarely-used utility module that has good test coverage.

Which practice is an example of organizing code into layers to enhance maintainability?

Putting all business logic in the database as stored procedures

Using a single class to handle both user input and file I/O

Mixing SQL queries directly into UI components

Separating presentation, business logic, and data access into distinct layers

CiscoCertified DevNet Professional

Domain 1Objective 5

Evaluate an Application Design and Implementation Considering Maintainability 350-901 Practice Questions (Page 6)

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 26–30

26application · medium
A team is reviewing a legacy application that has a large, untested module for parsing network device outputs. The module is critical but rarely changed. The team has limited time and must decide where to focus refactoring efforts. Which approach best prioritizes technical debt reduction?
Select an answer first
27foundation · easy
Which practice is an example of organizing code into layers to enhance maintainability?
Select an answer first
28foundation · easy
Which maintainability principle is most concerned with making code easier for a new developer to understand quickly?
Select an answer first
29foundation · easy
Which observability pillar is primarily used to record discrete events that occur during application execution, such as errors or user actions?
Select an answer first
30foundation · easy
Which architectural pattern separates an application into three interconnected components: model, view, and controller?
Select an answer first

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Evaluate an Application Design and Implementation Considering Maintainability 350-901 Practice Questions (Page 6)

Questions 26–30

A team is reviewing a legacy application that has a large, untested module for parsing network device outputs. The module is critical but rarely changed. The team has limited time and must decide where to focus refactoring efforts. Which approach best prioritizes technical debt reduction?

Which practice is an example of organizing code into layers to enhance maintainability?

Which maintainability principle is most concerned with making code easier for a new developer to understand quickly?

Which observability pillar is primarily used to record discrete events that occur during application execution, such as errors or user actions?

Which architectural pattern separates an application into three interconnected components: model, view, and controller?

Keep studying — 1.0 Software Development and Design