CAD Code Refactoring and Quality 2

Question 1

Which refactoring technique removes duplication by pulling common behavior into a shared base class?

Accepted Answer

Pull Up Method

Answer

Extract Method

Answer

Inline Method

Answer

Move Method

Question 2

What is the primary purpose of the 'Replace Temp with Query' refactoring?

Accepted Answer

Eliminate a temporary variable by replacing it with a method call

Answer

Improve loop performance

Answer

Convert a query into a command

Answer

Replace database queries with in-memory caches

Question 3

In the context of code quality metrics, what does 'cognitive complexity' measure?

Accepted Answer

How difficult code is to understand due to control flow nesting and branching

Answer

The number of classes in a system

Answer

Memory usage of the application

Answer

The number of external dependencies

Question 4

Which design smell describes a class that knows too much about another class's internal structure?

Accepted Answer

Inappropriate Intimacy

Answer

Feature Envy

Answer

Data Clumps

Answer

Primitive Obsession

Question 5

When applying the 'Decompose Conditional' refactoring, what happens to complex if-else logic?

Accepted Answer

The condition and branches are extracted into separate named methods

Answer

It is replaced with a switch statement

Answer

Boolean variables replace the condition

Answer

The conditional is moved to a configuration file

Question 6

What is the 'Strangler Fig' pattern used for in the context of refactoring?

Accepted Answer

Gradually replacing a legacy system by routing new functionality through a new system

Answer

Removing dead code incrementally

Answer

Strangling infinite loops in legacy code

Answer

Wrapping external APIs with adapters

Question 7

Which metric measures the number of linearly independent paths through a method's source code?

Accepted Answer

Cyclomatic Complexity

Answer

Lines of Code (LOC)

Answer

Coupling Between Objects (CBO)

Answer

Depth of Inheritance Tree (DIT)