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- CWNA-107
11.
Which wave properties can be modulated to encode data? (Choose all that apply.)
- A.Amplitude
- B.Frequency
- C.Phase
- D.Wavelength
- Answer & Explanation
- Report
Answer : [A, B, C]
Explanation :
Explanation :
| The three keying methods that can be used to encode data are amplitude-shift keying (ASK), frequency-shift keying (FSK), and phase-shift keying (PSK). |
12.
The IEEE 802.11-2012 standard defines communication mechanisms at which layers of the
OSI model? (Choose all that apply.)
- A.Network
- B.Physical
- C.Transport
- D.Application
- E.Session
- Answer & Explanation
- Report
Answer : [B, E]
Explanation :
Explanation :
| Peer communication is a logical or “horizontal” link between devices. The vertical link would be equivalent to the encapsulation between layers. The physical link is related to addressing. |
13.
The height or power of a wave is known as what?
- A.Phase
- B.Frequency
- C.Amplitude
- D.Wavelength
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Height and power are two terms that describe the amplitude of a wave. Frequency is how often a wave repeats itself. Wavelength is the actual length of the wave, typically measured from peak to peak. Phase refers to the starting point of a wave in relation to another wave. |
14.
Samantha received a gaming system as a gift. She would like to have it communicate with
her sister Jennifer’s gaming system so that they can play against each other. Which of the
following technologies, if deployed in the two gaming systems, should provide for the easiest
configuration of the two systems to communicate with each other?
- A.Wi-Fi Personal
- B.Wi-Fi Direct
- C.802.11n
- D.CWG-RF
- F.Wi-Fi Protected Setup
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Wi-Fi Direct is designed to provide easy setup for communications directly between wireless devices. Wi-Fi Personal does not exist. 802.11n will likely provide connectivity, but setup could be easy or difficult depending on the environment. CWG-RF is designed for Wi-Fi and cellular radios in a converged handset. Wi-Fi Protected Setup is designed to simplify security setup. |
15.
What other Wi-Fi Alliance certifications are required before a Wi-Fi radio can also be certified
as Voice Enterprise compliant? (Choose all that apply.)
- A.WMM-Power Save
- B.Wi-Fi Direct
- C.WPA2-Enterprise
- D.Voice Personal
- F.WMM-Admission Control
- Answer & Explanation
- Report
Answer : [A, C, E]
Explanation :
Explanation :
| Voice Enterprise offers enhanced support for voice applications in enterprise Wi-Fi networks. Voice Enterprise equipment must also support seamless roaming between APs, WPA2-Enterprise security, optimization of power through the WMM-Power Save mechanism, and traffic management through WMM-Admission Control. |
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