2.1 TCP Vs. UDP

Question 1

What does TCP stand for?

Answer 1

Transmission Control Protocol.

Question 2

What does UDP stand for?

Answer 2

User Datagram Protocol.

Question 3

What type of connection does TCP use?

Answer 3

Connection-oriented (establishes a reliable connection before transmitting data).

Question 4

What type of connection does UDP use?

Answer 4

Connectionless (transmits data without establishing a connection).

Question 5

How does TCP ensure reliable delivery of data?

Answer 5

Uses a three-way handshake (SYN, SYN-ACK, ACK) and retransmits lost packets.

Question 6

Does UDP retransmit lost packets?

Answer 6

No, UDP does not guarantee packet delivery or retransmission.

Question 7

What is the main advantage of TCP?

Answer 7

Reliable and ordered delivery of data.

Question 8

What is the main advantage of UDP?

Answer 8

Faster, lower overhead, and efficient for real-time applications.

Question 9

Which protocol is better for online banking and secure transactions?

Answer 9

TCP, because it ensures reliable data transmission.

Question 10

Which protocol is better for video streaming and gaming?

Answer 10

UDP, because it minimizes latency and overhead.

Question 11

Does TCP guarantee the order of packet delivery?

Answer 11

Yes, TCP ensures data packets arrive in sequence.

Question 12

Does UDP guarantee the order of packet delivery?

Answer 12

No, UDP packets may arrive out of order.

Question 13

What are some common applications that use TCP?

Answer 13

HTTPS, SSH, FTP, SMTP, IMAP.

Question 14

What are some common applications that use UDP?

Answer 14

VoIP, DNS, DHCP, online gaming, video streaming.

Question 15

Which protocol does DNS primarily use?

Answer 15

UDP (Port 53), but TCP is used for large queries.

Question 16

Why does DHCP use UDP instead of TCP?

Answer 16

UDP allows faster and more efficient communication without a connection setup.

Question 17

What is the key difference in speed between TCP and UDP?

Answer 17

UDP is faster because it has less overhead and no error-checking.

Question 18

What is a major security advantage of TCP over UDP?

Answer 18

TCP provides reliable data delivery with acknowledgment and error correction.

Question 19

What protocol should be used for transferring large files securely?

Answer 19

TCP (e.g., FTP, SFTP).

Question 20

What protocol should be used for live voice and video communication?

Answer 20

UDP (e.g., VoIP, Zoom, Skype).