Global Systems for Mobile Communications (GSM) is primarily used for what purpose?

Global Systems for Mobile Communications (GSM) is primarily used as a standard for mobile communication, specifically for mobile data transmission in wireless networks. It enables mobile devices to connect to cellular networks for making calls and sending messages, and it also provides data services that allow mobile internet access. GSM technology facilitates the transmission of both voice and data over the airwaves by dividing the available frequencies among various users, ensuring efficient and reliable communication.

The focus on mobile data transmission is essential because GSM underpins many essential mobile communication services. It provides protocols for second-generation networks, which paved the way for the evolution of mobile data services and internet connectivity on smartphones and other mobile devices.

The other options do not accurately reflect the main purpose of GSM. While data storage in mobile apps is a function of application design rather than a network standard, video streaming services may utilize mobile networks but are not directly served by GSM itself. Network security protocols are important for safeguarding data in transit, but they are separate concepts from the underlying communication standards like GSM that facilitate the actual transmission of data.