Which two wireless technologies can interfere with 802.11 networks? (Choose two.)
A. DECT
B. ZigBee
C. WiMax
D. GSM
Which two wireless technologies can interfere with 802.11 networks?
Which two wireless technologies can interfere with 802.11 networks? (Choose two.)
A. DECT
B. ZigBee
C. WiMax
D. GSM
The original IEEE 802.16 specification dealt with the 10 to 66 GHz range.
IEEE 802.16a added specifications for the 2 to 11 GHz range.
IEEE 802.16d uses orthogonal frequency-division multiplexing (OFDM) with 256 sub-carriers.
IEEE 802.16e uses scalable orthogonal frequency-division multiple access (SOFDMA), and (importantly) adds a capability for full mobility support. (Unfortunately, OFDM and
Frequency
The original IEEE 802.16 specification covered a frequency spectrum of 10 to 66 GHz. In practice, though, it was important to hold the actual frequency slots to a minimum. (Radio transmitters and receivers constitute a large part of the cost of equipment.) Consequently the WiMAX Forum published 3 licensed spectrum profiles:
— 2.3 GHz
— 2.5 GHz
— 3.5 GHz
WiMax doesn’t interfere with 802.11 LAN
I think B and Care correct
DECT 6.0 is a North American marketing term for DECT devices manufactured for the United States and Canada operating at 1.9 GHz.
Before 1.9 GHz band was approved by the FCC in 2005, DECT could only operate in unlicensed Region 2 2.4 GHz and 900 MHz ISM bands; some users of Uniden WDECT 2.4 GHz phones reported interoperablity issues with Wi-Fi equipment
https://en.wikipedia.org/wiki/Digital_Enhanced_Cordless_Telecommunications
should be a and b, oddly enough the explanation is in the answer for the next question.