Cellular networks (4G, 5G) in Computer Networks - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does 4G stand for in cellular networks?

4G stands for the fourth generation of mobile network technology, which provides faster internet speeds and better connectivity than previous generations.

beginner

What is a key improvement of 5G over 4G?

5G offers much higher speeds, lower delay (latency), and can connect many more devices at once compared to 4G.

intermediate

How does 5G improve user experience in crowded places?

5G uses advanced technology to handle many devices simultaneously, so internet stays fast even in crowded areas like stadiums or concerts.

beginner

What is latency in cellular networks?

Latency is the time it takes for data to travel from your device to the network and back. Lower latency means faster response times.

intermediate

Name one real-life application that benefits from 5G's low latency.

Remote surgery, where doctors control instruments from far away, benefits from 5G's low latency to ensure quick and precise actions.

Which generation of cellular network introduced high-speed mobile internet widely used today?

A 2G

B 4G

C 3G

D 5G

4G is the generation that brought fast mobile internet to most users, enabling smooth video streaming and browsing.

What is a major feature of 5G compared to 4G?

A Ability to connect more devices

B Higher latency

C Slower speeds

D Less reliable connection

5G can connect many more devices at once, making it ideal for crowded areas and smart city applications.

Latency in a network refers to:

A The speed of the internet connection

B The number of connected devices

C The delay before data starts moving

D The time data takes to travel back and forth

Latency is the time it takes for data to travel from the device to the network and back.

Which technology is best for applications needing instant response, like remote surgery?

A 3G

B 4G

C 5G

D Wi-Fi

5G offers very low latency, which is critical for applications requiring immediate feedback.

4G networks primarily improved which aspect over 3G?

A Internet speed and reliability

B Screen resolution

C Number of cell towers

D Battery life of phones

4G improved internet speed and connection reliability compared to 3G.

Explain the main differences between 4G and 5G cellular networks.

Think about how fast the internet is, how quickly it responds, and how many devices can connect.

Describe why low latency is important in modern cellular networks and give an example.

Consider how delay affects activities needing quick reactions.