Which two versions of the 802.11 technologies can use multiple antennas at both the access point and network adapter?

802.11n and g. The most recent to be deployed is 802.11n. They are wireless network protocols.

802.11n standard uses two antennas at both ends of the transmission and can use 802.11b/g/n standards. page 479 in the A+ Guide to Hardware 5th edition book.