Unreal Engine Unreal Engine Networking & Multiplayer 2

Question 1

What does the UPROPERTY specifier 'Replicated' do in Unreal Engine C++?

Accepted Answer

Automatically synchronizes the property value from server to all clients

Answer

Makes the property visible in the Blueprint editor

Answer

Creates a unique copy of the property per player

Answer

Marks the property as read-only over the network

Question 2

Which function must be overridden in a replicated C++ class to register which properties should be replicated?

Accepted Answer

GetLifetimeReplicatedProps

Answer

BeginPlay

Answer

Tick

Answer

PostInitializeComponents

Question 3

What is a Listen Server in Unreal Engine multiplayer?

Accepted Answer

A server that also runs a game client so the host can play

Answer

A dedicated server that only processes network traffic

Answer

A server that monitors other servers for availability

Answer

A client that receives broadcast messages from multiple servers

Question 4

What is the primary purpose of the DOREPLIFETIME macro in Unreal Engine?

Accepted Answer

To register a property for replication inside GetLifetimeReplicatedProps

Answer

To define a replicated function signature

Answer

To set the replication tick rate of an actor

Answer

To enable bReplicates automatically for the entire class

Question 5

Which Unreal Engine subsystem provides high-level online services such as sessions, matchmaking, and achievements?

Accepted Answer

Online Subsystem

Answer

Net Driver

Answer

Game Session Manager

Answer

Network Manager Component

Question 6

What is 'lag compensation' in the context of Unreal Engine multiplayer?

Accepted Answer

Rewinding server game state to validate hits accounting for client latency

Answer

Compressing packets to reduce bandwidth usage

Answer

Predicting future positions of remote players on the client

Answer

Buffering rendered frames to smooth visual jitter

Question 7

In Unreal Engine Blueprints, which node is used to check if code is currently running with server authority?

Accepted Answer

Has Authority

Answer

Is Server

Answer

Is Net Mode Server

Answer

Check Net Role