找考题网-背景图
单项选择题

A. IRB. DSSSC. FHSSD. DSSS and FHSSE. IR, FHSS, and DSS……

Which spread spectrum technology does the 802.11b standard define for operation?()

A. IR
B. DSSS
C. FHSS
D. DSSS and FHSS
E. IR, FHSS, and DSSS