IEEE 802.11-2007 specifies two ERP protection mechanisms: RTS/CTS and CTS-to-Self. Which statement
is true regarding these two protection mechanisms? (Choose 2)

A.
RTS and CTS frames use Short Interframe Spaces (SIFS), and CTS-to-Self frames use PCF Interframe
Spaces (PIFS).

B.
Use of RTS/CTS requires more overhead than CTS-to-Self due to a higher number of frames
transmitted onto the wireless medium.

C.
RTS and CTS frames are relayed through the access point, whereas the CTS-to-Self frames are not.

D.
A CTS-to-Self frame sent by a client station may reach fewer nodes than the RTS/CTS frame
exchange.

E.
By definition, all associated client stations in a BSS can hear RTS, CTS, and CTS-to-Self frames, so
RTS/CTS and CTS-to-Self mechanisms have equal effectiveness.

F.
Aside from the Subtype subfield of the Frame Control field, the generic MAC header format of RTS and
CTS frames are identical.