UCA Game Development Foundations 2 — Questions and Answers
Question 1: Which Unity component is responsible for detecting collisions without applying physics forces to the object?
- Rigidbody
- Collider set as Trigger (Correct answer)
- NavMesh Agent
- Animator
Correct answer: Collider set as Trigger
Setting a Collider's 'Is Trigger' property to true allows collision detection via OnTriggerEnter without generating physical forces.
Question 2: In Unity's coordinate system, which axis points upward by default?
- X-axis
- Z-axis
- Y-axis (Correct answer)
- W-axis
Correct answer: Y-axis
Unity uses a left-handed coordinate system where the Y-axis points upward by default.
Question 3: What is the purpose of Unity's Time.deltaTime in game logic?
- Track total game session duration
- Make movement frame-rate independent (Correct answer)
- Pause and resume the game clock
- Synchronize multiplayer timestamps
Correct answer: Make movement frame-rate independent
Multiplying movement values by Time.deltaTime ensures consistent speed regardless of frame rate.
Question 4: Which rendering mode in Unity's Standard Shader makes a surface fully opaque with no transparency?
- Transparent
- Fade
- Cutout
- Opaque (Correct answer)
Correct answer: Opaque
The Opaque rendering mode renders the material without any transparency, which is the most performant option.
Question 5: What does the term 'Game Loop' refer to in game development?
- A circular level design pattern
- The repeating cycle of input-update-render each frame (Correct answer)
- Looping background music tracks
- A recursive AI behavior pattern
Correct answer: The repeating cycle of input-update-render each frame
The game loop is the core cycle that processes player input, updates game state, and renders the scene each frame.
Question 6: In Unity, what is a Prefab used for?
- Compiling scripts faster
- Storing reusable pre-configured GameObjects (Correct answer)
- Defining camera render settings
- Creating shader graph nodes
Correct answer: Storing reusable pre-configured GameObjects
Prefabs are reusable asset templates that store a complete GameObject configuration for instantiation in scenes.
Question 7: Which Unity method is called once when a script component is first enabled and active?
- Update()
- Start() (Correct answer)
- FixedUpdate()
- LateUpdate()
Correct answer: Start()
Start() is called once on the frame when the script is first enabled, after all Awake() calls have completed.
UCA Game Development Foundations 2
Which Unity component is responsible for detecting collisions without applying physics forces to the object?