Flashcards
Chapter 4
Flashcards do conjunto (10)
- 1What will make the higher data rates provided from an AP more possible?By being closer to the AP
- 2What happens when you move away from the AP?The data rate drops, its harder for the client to match the constellation chart.
- 3What is MCS and what technology does it apply to?Modulation Coding Scheme
802.11n & above - 4What is SNR? Explain.Signal to Noise Ratio
The difference between wanted and unwanted signals - 5What values are Very Good, Ok, Poor for SNR?Very Good - 25 dB & above
Ok - 15-20 dB
Poor - 10 dB or less - 6What does IR mean and what does it do?Intentional Radiator
Intentionally emits radio waves as its intended function - 7What does EIRP mean and what does it do?Equivalent Isotropically Radiated Power
Energy measured at the antenna output (IR & Antenna Gain together) - 8What is the full definition of Link Budget?Accounts for transmitter & receiver configuration as well as gains + losses in the communication system
- 9When does the earths bulge need to be factored into elevation calculations?after 7 miles
- 10What is Fade Margin? and how much should be allowed?The additional signal required to ensure communication. Allows for rain etc.
15 dB
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- CWNA CWNA Online FlashCards sobre Chapter 4, criado por Michael Gleeson em 26-01-2017.
- Criado por
- Michael Gleeson
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