Final answer:
option a.The term for a portion of the available spectrum for Wi-Fi communication is 'channel'. Channels are bands of radio frequencies utilized for transmitting and receiving data on Wi-Fi networks, with specific ranges in the 2.4 GHz and 5 GHz frequency bands.
Step-by-step explanation:
The term that describes a portion of the available spectrum for Wi-Fi network communication is channel. A channel in the context of Wi-Fi is a band of radio frequencies used to transmit and receive data. Wi-Fi networks use specific ranges of frequencies within the electromagnetic spectrum, and these ranges are divided into channels that can be selected for use to minimize interference with other nearby networks and devices. Each channel occupies a defined frequency band, and networks can switch between different channels to find the one with the least interference.
The Wi-Fi spectrum is typically in the 2.4 GHz and 5 GHz frequency ranges, with each range containing multiple channels. For instance, in the 2.4 GHz band, there are typically 14 channels, each separated by 5 MHz, while the 5 GHz band has a higher number of channels with wider bandwidths. Choosing the optimal Wi-Fi channel is important for ensuring the best possible network performance and reducing the chances of interference from other wireless networks.