Network communications refer to the exchange of data between devices over a network. This can include computers, smartphones, and servers that connect through various mediums like Wi-Fi, Ethernet, or cellular networks. The primary goal is to enable users to share information, access resources, and communicate effectively. Protocols, such as TCP/IP and HTTP, govern how data is transmitted and received, ensuring that messages are sent accurately and efficiently. Network communications can occur in different forms, including email, instant messaging, and video conferencing, facilitating both personal and professional interactions across the globe.