UCA Unity Scripting & Programming 3

Question 1

Which of the following correctly declares a C# property with a private setter in a Unity script?

Accepted Answer

public int Health { get; private set; }

Answer

Auto-properties in C# support access modifier asymmetry using 'public int Health { get; private set; }' syntax.

Question 2

What is the primary purpose of Unity's ScriptableObject?

Accepted Answer

To store shared data assets independent of scene instances

Answer

ScriptableObjects are data containers saved as project assets, allowing data sharing across scenes without scene coupling.

Question 3

How do you correctly unsubscribe a method from a C# event in Unity to prevent memory leaks?

Accepted Answer

event -= Method;

Answer

Using -= removes a delegate from an event, which is essential in OnDisable() or OnDestroy() to prevent memory leaks.

Question 4

What does the 'yield return new WaitForSeconds(2f)' statement do inside a Unity coroutine?

Accepted Answer

Pauses execution of the coroutine for 2 seconds before continuing

Answer

WaitForSeconds suspends coroutine execution for the specified duration then resumes from that point.

Question 5

In Unity, which method of the Input class checks if a key was pressed during this frame only?

Accepted Answer

Input.GetKeyDown()

Answer

Input.GetKeyDown() returns true only on the single frame when the key transitions from up to down.

(UCA) Unity Certified Associate Game Developer Practice Test