An administrator for ABC Company has noticed an intermittently high number of retransmissions on their ERP WLAN. The retransmissions are coming from some of the access points near the break room, especially when wireless stations are using the FTP protocol to pull down large sales report data files from the company’s FTP server. The administrator decides to hire you as a consultant hoping you could improve performance of the WLAN. As the consultant, what tests will you perform?

A.
Decrease the output power on all access points and stations throughout the ESS to form smaller cells in case there is a hidden node

B.
Enable support of short preambles on all access points near the break room

C.
Change the DTIM interval in all access points near the break room to a shorter interval

D.
Change the fragmentation threshold value on all access points near the break room to a smaller value

E.
Use a spectrum analyzer to identify and remove RF interference sources in the 2.4 GHz ISM band