Final answer:
The 802.11n wireless standard supports up to four MIMO streams, enhancing network bandwidth and reliability.
Step-by-step explanation:
The 802.11n wireless standard supports a maximum of four MIMO streams. MIMO, which stands for Multiple Input Multiple Output, allows for multiple antennas to transmit and receive data simultaneously, which can significantly increase the network's bandwidth and reliability. The 802.11n standard, introduced in 2009, provides increased data rates and improved performance over previous standards.