What is the difference between TCP and UDP?

What is the difference between TCP and UDP?

• A. TCP is faster and more reliable than UDP
• B. TCP is connection-oriented and reliable, while UDP is connectionless and faster but less reliable
• C. UDP is more secure than TCP
• D. TCP is only used for video streaming

Answer: (B)

The correct choice highlights two fundamental characteristics that differentiate TCP from UDP. TCP, or Transmission Control Protocol, is connection-oriented, meaning it establishes a connection between the sender and receiver before data transmission begins. This protocol ensures that data packets are delivered reliably and in the correct order. It uses acknowledgments to confirm receipt of packets and retransmits any lost packets, making it highly reliable. In contrast, UDP, or User Datagram Protocol, is connectionless. This means that it sends data without establishing a connection or ensuring that the packets arrive in the correct order. While this approach makes UDP faster because it does not require the overhead of connection management and error correction, it sacrifices reliability. Data sent via UDP may arrive out of order, appear duplicated, or be lost without any way for the protocol to rectify these issues. Thus, the distinction laid out in the correct answer outlines the key trade-offs between these two protocols: TCP prioritizes reliability and order, making it suitable for applications like file transfers or web browsing, whereas UDP prioritizes speed, making it favorable for applications like online gaming or video streaming where some data loss is acceptable.

The correct choice highlights two fundamental characteristics that differentiate TCP from UDP. TCP, or Transmission Control Protocol, is connection-oriented, meaning it establishes a connection between the sender and receiver before data transmission begins. This protocol ensures that data packets are delivered reliably and in the correct order. It uses acknowledgments to confirm receipt of packets and retransmits any lost packets, making it highly reliable.

In contrast, UDP, or User Datagram Protocol, is connectionless. This means that it sends data without establishing a connection or ensuring that the packets arrive in the correct order. While this approach makes UDP faster because it does not require the overhead of connection management and error correction, it sacrifices reliability. Data sent via UDP may arrive out of order, appear duplicated, or be lost without any way for the protocol to rectify these issues.

Thus, the distinction laid out in the correct answer outlines the key trade-offs between these two protocols: TCP prioritizes reliability and order, making it suitable for applications like file transfers or web browsing, whereas UDP prioritizes speed, making it favorable for applications like online gaming or video streaming where some data loss is acceptable.