What suite of protocols is commonly used for communication between computers?

The suite of protocols commonly used for communication between computers is TCP/IP. This is the foundational suite for internet and network communication. TCP (Transmission Control Protocol) is responsible for ensuring reliable transmission of data, breaking down messages into packets, and ensuring that packets are delivered in order and without error. IP (Internet Protocol) is responsible for addressing and routing packets of data between devices across networks.

TCP/IP is versatile and supports a wide range of applications, making it a universal standard for networking. It allows different types of devices across different networks to communicate with one another. This protocol suite encompasses various protocols responsible for different layers of the network—enabling everything from data transmission at a low level to the higher-level applications that users interact with, like web pages and emails.

While other choices represent important protocols, they either serve specific purposes or layers. For instance, SMTP (used for email transmission) and POP (a protocol for retrieving emails) are not general communication protocols. HTTP and HTTPS are protocols that operate on top of TCP/IP primarily for web traffic. UDP (User Datagram Protocol) is another transport layer protocol used for specific applications requiring fast transmission without the reliability guarantees of TCP. TCP/IP stands out because it underlies virtually all internet and network communications, making