Miscellany 1 Flashcards
Which WIFI standard introduced MIMO?
802.11n
MIMO
Multiple Input, Multiple Output
How wide are the channels in 802.11n?
40 MHz
What is the speed of a channel in 802.11n?
119 Mbps
(54 for each of the bonded channels, plus the wasted 11 from side tones)
802.11 uses block acknowledgement, what is it?
Allowing multiple pckets to be passed before an acknowledgement is required
How does MIMO send traffic?
Several frames sent by several antennas and then recombined
What is another name for sending multiple frames through multiple antennas (other than MIMO)
spatial multiplexing
What bandwidth does 802.11n use?
2.4 GHz, 5.0 GHz or both
MU-MIMO
MultiUser MIMO
What does MU-MIMO allow?
It allows the antennas used in MIMO to be spread over multiple Access Points
What is the channel width of 802.11ac?
Up to 160 MHz
What band does 802.11ac use?
5.0 GHz
What standard is Wi-Fi 6?
802.11ax
What standard is Wi-Fi 5?
802.11ac
What band does 802.11ax use?
2.4 GHz and 5.0 GHz
What is the relationship between dBi and dBd?
dBd + 2.2 = dBi
What is the service set for ad-hoc mode WiFi?
IBSS
IBSS
Independent Basic Service Set
What is the service set for Infrastructure mode?
BSS
BSS
Basic Service Set
SSID
Service Set Identifier
What is a lightweight AP?
One without a full OS
In WiFi, what is split MAC?
The controller and AP split duties
What is another name for a lightweight AP?
A thin AP
What is another name for an AP running a full OS?
A thick AP.
LWAPP
Lightweight Access Point Protocol (Cisco)
CAPWAP
Control and Provisioning of Wireless Access Points
