The major difference between TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) packets is:
UDP packets are sent with no verification method while TCP packets require verification of receipt.
To elaborate, TCP is a connection-oriented protocol that ensures reliable transmission of data. It establishes a connection between the sender and receiver and uses various mechanisms (like acknowledgments and retransmissions) to verify that packets are received correctly. If a packet is lost or corrupted, TCP will attempt to retransmit it.
On the other hand, UDP is a connectionless protocol that does not guarantee the delivery of packets. It sends data without establishing a connection, and it does not include mechanisms for verifying receipt, which means there is no acknowledgment of successful delivery. This makes UDP faster and suitable for applications where speed is more critical than reliability, such as video streaming or online gaming.