- Home
- Networking
- CWNA-107
6.
What type of signal is required to carry data?
- A.Communications signal
- B.Data signal
- C.Carrier signal
- D.Binary signal
- E.Digital signal
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| A carrier signal is a modulated signal that is used to transmit binary data. |
7.
Which keying method is most susceptible to interference from noise?
- A.FSK
- B.ASK
- C.PSK
- D.DSK
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Because of the effects of noise on the amplitude of a signal, amplitude-shift keying (ASK) has to be used cautiously. |
8.
Which sublayer of the OSI model’s Data-Link layer is used for communication between
802.11 radios?
- A.LLC
- B.WPA
- C.MAC
- D.FSK
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| The IEEE 802.11-2012 standard defines communication mechanisms at only the Physical layer and MAC sublayer of the Data-Link layer of the OSI model. The Logical Link Control (LLC) sublayer of the Data-Link layer is not defined by the 802.11-2012 standard. WPA is a security certification. FSK is a modulation method. |
9.
While performing some research, Janie comes across a reference to a document titled RFC
3935. Which of the following organization’s website would be best to further research this
document?
- A.IEEE
- B.Wi-Fi Alliance
- C.WECA
- D.Application
- E.FCC
- F.IETF
- Answer & Explanation
- Report
Answer : [E]
Explanation :
Explanation :
| The IETF is responsible for creation of RFC documents. The IEEE is responsible for the 802 standards. The Wi-Fi Alliance is responsible for certification tests. The Wi-Fi Alliance used to be known as WECA but changed its name to Wi-Fi Alliance in 2002. The FCC is responsible for RF regulatory rules in the United States. |
10.
The Wi-Fi Alliance is responsible for which of the following certification programs?
- A.802.11i
- B.WEP
- C.802.11-2012
- D.WMM
- E.PSK
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| Wi-Fi Multimedia (WMM) is a Wi-Fi Alliance certification program that enables Wi-Fi networks to prioritize traffic generated by different applications. 802.11-2012 is the IEEE standard, and WEP (Wired Equivalent Privacy) is defined as part of the IEEE 802.11-2012 standard. 802.11i was the IEEE amendment that defined robust security network (RSN) and is also part of the 802.11-2012 standard. PSK is not a standard; it is an encoding technique. |
|
|
||||||||||||||||||||||||||||
