Which of the following is NOT a method of data transmission?

Data transmission refers to the process of sending and receiving data between devices and systems. The term encompasses various methods used to transfer data, either through physical connections or through wireless means.

Wired networks and wireless networks are two primary methods of data transmission. Wired networks utilize physical cables (such as Ethernet cables) for data transfer, while wireless networks use radio waves to transmit data over the air.

Sneakernet is a less common method where data is physically transported from one device to another using portable storage media, such as USB drives or external hard drives. Although unconventional, it is still considered a means of data transmission.

Cloud storage, on the other hand, refers to a service that allows users to store and access data over the internet through a third-party provider's servers. While cloud storage may facilitate data access and sharing, it does not directly constitute a method of transmitting data itself. Instead, it is a form of data storage and management, where the transmission occurs through the internet, but the primary purpose is to store rather than transmit data.