Which concept represents "virtual pipes" for data transmission defined by frequency band?

The concept that represents "virtual pipes" for data transmission defined by frequency band is wireless channels. In wireless communication, a channel refers to a designated frequency band that is used to transmit data between devices. Each channel is essentially a specific range of frequencies within a broader spectrum that allows for simultaneous communication without interference between devices.

Wireless channels are important because they enable devices to communicate over the same medium—such as radio waves—without causing disruption to one another. By using different channels, multiple devices can operate in close proximity while minimizing interference, thus ensuring a more reliable and efficient data transmission. This is particularly relevant in technologies like Wi-Fi, where routers and other equipment dynamically select or change channels to maintain optimal performance for connected devices.

Other options, while related to networking and data transmission, do not accurately describe the concept of "virtual pipes" defined by frequency bands. For example, Wi-Fi analyzers are tools used to analyze the performance and configurations of wireless networks but do not represent channels themselves. Toner/probe tools are used primarily for cable tracing and testing rather than for wireless communication contexts. Network taps are hardware devices that facilitate the monitoring of network data in a passive manner, again not related to the concept of frequency bands for data transmission.