Quiz: Manage scene flow and data

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Beginner

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+0 XP

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40m

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Unity Technologies

This quiz will assess your understanding of the concepts covered in the Junior Programmer: Manage scene flow and data mission.

Question 1

Which of the following is considered a Version Control solution?

Select only one

Github

Unity Analytics

Package Manager

Visual Studio

Question 2

Which of the following is not typically done by a version control solution?

Select only one

Track where changes to the project have been made over time.

Revert back to a previous version of the project, if necessary.

Automatically resolve simple syntax errors in scripts.

Manage contributions from all team members.

Question 3

When would a “merge conflict” arise?

Select only one

When changes are made to the same line of the same file on different branches of a repository.

When two different files are saved to the same repository with incompatible programming languages.

When there is an error in a line of code that will cause additional errors when merged with the rest of the application.

When two contributors push the exact same file with the exact same code at the exact same time.

Question 4

What does it mean to “checkout a branch” within a version control solution?

Select only one

Gives you “view” access to a branch of the repository.

Removes a branch from the current repository.

Creates a new duplicate branch in the repository.

Updates your working directory to match the version stored in a branch.

Question 5

What is a “commit message” within a version control solution?

Select only one

A message that accompanies a “commit” to a repository explaining a change that was made.

A message that is sent to all contributors requesting that they commit their changes to the repository.

The requirement to “commit” that you have verified certain functionality.

A warning message that is shown to a contributor before they commit their changes to a repository.

Question 6

Which of the following would represent a typical workflow with a version control solution?

Select only one

clone, add, checkout, branch, push, commit

clone, branch, checkout, add, commit, push

checkout, add, clone, branch, commit, push

checkout, clone, branch, add, push, commit

Question 7

In Unity’s Scripting reference, the following is shown for the LoadScene function: SceneManager.LoadScene

public static void LoadScene(int sceneBuildIndex, SceneManagement.LoadSceneMode mode = LoadSceneMode.Single);
public static void LoadScene(string sceneName, SceneManagement.LoadSceneMode mode = LoadSceneMode.Single);

Which of the following would be a valid implementation of the LoadScene method?

Select only one

SceneManager.LoadScene(0, LoadSceneMode.Additive);

SceneManager.LoadScene(0, “SceneName”);

SceneManager.LoadScene(LoadSceneMode.Single);

SceneManager.LoadScene(“SceneName”, 0);

Question 8

When would you want to use the DontDestroyOnLoad function?

Select only one

When you want to save information about a particular GameObject or component between scenes.

When you want an object to ignore all Destroy() calls on it.

When the application first loads and you want an object to retain the values it had from a previous time it was run.

When you don’t want a particular GameObject to destroy any other objects in the scene while it is being loaded.

Question 9

The following code is intended to reload the scene every 3 seconds, then display the number of times it has reloaded in the console with “Reload number 0”, then “Reload number 1”, “Reload number 2”, etc. every time it is reloaded.

public int reloadNumber = 0;

void Start()
{   
  Debug.Log("Reload number " + reloadNumber);   
  reloadNumber++;
  StartCoroutine(WaitAndReload()); 
}   

IEnumerator WaitAndReload()
{
  yield return new WaitForSeconds(3);
  SceneManager.LoadScene (SceneManager.GetActiveScene().name); 
}

However, the increased reloadNumber variable is not being retained when the scene is reloaded, so it prints “Reload number 0” every time instead of incrementing it by 1 every time. What change would need to be made in order to make the program work as desired?

Select only one

Make the reloadNumber variable static.

Make the reloadNumber variable protected.

Make the reloadNumber variable a constant.

Serialize the reloadNumber variable with a “SerializeField” attribute.

Question 10

The below is an example of the Singleton design pattern implemented for a GameManager:

public class GameManager : MonoBehaviour 
{
   void Awake()
   {     
      if (Instance == null)
      {       
         Instance = this;
         DontDestroyOnLoad(gameObject);
      }    
      else     
      {       
         Destroy(gameObject);
      }     
   } 
       
   public static GameManager Instance { get; private set; }
   
}

Which of the following is true about this class?

Select only one

It can be accessed from any other class with GameManager.Instance.

It can be accessed from any other class with GameManager.get().

It can be instantiated as many times as you want in a scene.

It will automatically be added as a component to every object in the scene.

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