Practical Cyber Hacking Skills for Beginners - TCP versus UDP

The video tutorial explains the two main protocols for data transmission over the Internet: TCP and UDP. TCP, or Transmission Control Protocol, is connection-oriented and ensures error checking and guaranteed delivery of data packets. It is used in applications like web browsing, file transfers, and emails. UDP, or User Datagram Protocol, is connectionless and does not guarantee delivery, making it suitable for real-time applications like video conferencing, live broadcasts, and online gaming. The tutorial also discusses how these protocols are used in practice, with browsers using UDP for DNS resolution and TCP for retrieving website content.

What is a key characteristic of TCP that differentiates it from UDP?

• It is connectionless.

• It does not guarantee data delivery.

• It provides error checking and guarantees delivery.

• It is used for live broadcasts.

Which of the following is NOT an application of TCP?

• File transfers

• Email communication

• World Wide Web

• Video conferencing

How does TCP ensure the reliability of data transmission?

• By being connectionless

• By using less bandwidth

• By providing error checking and guaranteeing delivery

• By prioritizing speed over reliability

Why is UDP preferred over TCP for live broadcasts?

• It ensures all data packets are delivered.

• It is faster and can handle slight data loss without interruption.

• It provides error checking.

• It is connection-oriented.

In which scenario is UDP used instead of TCP?

• Sending emails

• Online gaming

• File transfers

• Browsing the web

What happens if a data packet is lost during a live broadcast using UDP?

• The broadcast stops until the packet is resent.

• The broadcast continues without interruption.

• The entire broadcast restarts.

• The broadcast switches to TCP.

What role does UDP play when accessing a website?

• Retrieving website content

• Ensuring data packets are delivered

• Resolving the website's IP address

• Sending emails