CWNP Exam Questions

which other 802.11 physical layer specifications (PHYs)?

The IEEE 802.11-2007 standard requires ERP-OFDM capable devices to be backwards compatible with devices using which other 802.11 physical layer specifications (PHYs)? Choose 2

A.
DSSS

B.
FHSS

C.
HR/DSSS

D.
ERP-PBCC

E.
DSSS-OFDM