Why UDP is faster than TCP in Computer Networks - Quick Recap

Recall & Review

beginner

What does UDP stand for and what is its main characteristic?

UDP stands for User Datagram Protocol. It is a simple communication protocol that sends data without checking if it arrives correctly.

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What does TCP stand for and how does it ensure data delivery?

TCP stands for Transmission Control Protocol. It ensures data is delivered correctly by establishing a connection and confirming receipt of data packets.

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Why is UDP generally faster than TCP?

UDP is faster because it does not establish a connection or check if data arrives correctly, which reduces delays and overhead.

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What is one trade-off when using UDP instead of TCP?

The trade-off is that UDP may lose some data or deliver it out of order because it does not check or fix errors.

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Give a real-life example where UDP is preferred over TCP.

UDP is preferred in live video calls or online games where speed is more important than perfect data delivery.

Which protocol is faster because it does not check if data arrives correctly?

A UDP

B TCP

C HTTP

D FTP

UDP sends data without waiting for confirmation, making it faster than TCP.

What does TCP do to ensure data is received correctly?

A Establishes a connection and confirms receipt

B Sends data without checking

C Drops data randomly

D Sends data only once

TCP creates a connection and waits for acknowledgments to ensure data is received.

Which of these is a disadvantage of UDP?

A Slower speed

B Complex connection setup

C Possible data loss

D Requires acknowledgments

UDP may lose data because it does not check for delivery.

In which situation is UDP preferred over TCP?

A Sending emails

B Live video streaming

C File downloads

D Bank transactions

Live video streaming benefits from UDP's speed despite possible data loss.

What is the main reason TCP is slower than UDP?

A It uses more bandwidth

B It does not support connections

C It sends data in smaller packets

D It checks and confirms data delivery

TCP slows down because it waits for confirmation that data arrived correctly.

Explain why UDP is faster than TCP in simple terms.

Think about what steps TCP does that UDP skips.

Describe a real-life example where using UDP is better than TCP and why.

Consider situations where quick updates matter more than every detail.