Mobile devices connect to the outside world through the cellular networks or through various wi-fi standards.

802.11 wifi standard

Explanation:

802.11 and 802.11x refers to a family of specifications developed by the IEEE for wireless LAN (WLAN) technology. 802.11 specifies an over-the-air interface between a wireless client and a base station or between two wireless clients. The IEEE accepted the specification in 1997.

802.11 — applies to wireless LANs and provides 1 or 2 Mbps transmission in the 2.4 GHz band using either frequency hopping spread spectrum (FHSS) or direct sequence spread spectrum (DSSS).

answer; ///i believe that neither technician a or technician b are correct answer(both are false);

i think it could be virus