Client-server architecture in Unity - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the server in Unity.

Unity

NetworkManager.singleton.Start[1]();

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AClient

BConnect

CHost

DServer

Attempts:

3 left

💡 Hint

Common Mistakes

Using StartClient() instead of StartServer()

Using StartHost() which starts both client and server

To start the server in Unity's networking, you call StartServer() on the NetworkManager singleton.

2fill in blank

medium

Complete the code to send a message from client to server.

Unity

client.Send[1](message);

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ACommand

BMessage

CRpc

DEvent

Attempts:

3 left

💡 Hint

Common Mistakes

Using Rpc which is server to client

Using Event which is not a Unity networking method

In Unity networking, clients send commands to the server using methods marked with [Command].

3fill in blank

hard

Fix the error in the server callback method declaration.

Unity

[[1]]
void CmdSendData(string data) {
    // server logic
}

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AServerCallback

BClientRpc

CCommand

DServerRpc

Attempts:

3 left

💡 Hint

Common Mistakes

Using ClientRpc attribute instead of Command

Using ServerRpc which is not a Unity HLAPI attribute

The correct attribute to mark a method as a command from client to server is [Command].

4fill in blank

hard

Fill both blanks to create a dictionary of player scores where keys are player IDs and values are scores greater than 10.

Unity

var highScores = new Dictionary<int, int> { { [1], [2] } };

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AplayerId

Bscore

C15

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using score as key instead of playerId

Using 5 as score which is not greater than 10

The dictionary key is the player ID and the value is the score. We want scores greater than 10, so 15 fits.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps player names to their scores if the score is above 50.

Unity

var topPlayers = new Dictionary<string, int> { { [1], [2] } }; // Only if [3] > 50

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AplayerName

Bscore

DplayerId

Attempts:

3 left

💡 Hint

Common Mistakes

Using playerId instead of playerName as key

Using playerId in the condition instead of score

The dictionary maps player names to scores, and the condition checks if the score is above 50.