Question

which of the following protocols is connectionless? udp ip tcp spx

Explanation:

Connectionless protocols do not establish a dedicated communication channel before sending data, nor do they require acknowledgment of receipt. UDP (User Datagram Protocol) is a core connectionless transport layer protocol that sends data without prior connection setup. IP (Internet Protocol) is also connectionless, operating at the network layer to route packets without a pre-established connection. TCP (Transmission Control Protocol) and SPX (Sequenced Packet Exchange) are connection-oriented, requiring a connection to be established, maintained, and terminated for data transfer.

Answer:

A. UDP
B. IP