CWNA Exam UPDATED ACTUAL Exam
Questions and CORRECT Answers
DSSS uses only DBPSK for modulation. - CORRECT ANSWER - False
(DSSS uses DBPSK at 1 Mbps but uses DQPSK at 2 Mbps)
Because of the relatively high speeds achieved with FHSS, it is widely implemented in WLAN
systems. - CORRECT ANSWER - False
How many adjacent non-overlapping channels may be used in the same physical area using the
2.4 GHz spectrum? - CORRECT ANSWER -3
Which type of RF signal uses only a single frequency for transmission? - CORRECT
ANSWER - narrowband
How wide is an OFDM channel in 2.4 GHz? - CORRECT ANSWER - 20 MHz
Which modulation methods were defined by 802.11a and 802.11g? (Choose all that apply) -
CORRECT ANSWER - 16-QAM
BPSK
64-QAM
What is a disadvantage of narrowband transmissions? - CORRECT ANSWER -
interference from another radio signal
Which system is preferred for 802.11 WLANs that operate at speeds in excess of 11 Mbps? -
CORRECT ANSWER - OFDM
, The amount of time a FHSS station transmits on a single frequency is called which of the
following? - CORRECT ANSWER - Dwell time
Which data rates are supported by PBCC? - CORRECT ANSWER - 5.5, 11, 22, and 33
Mbps
Each OFDM Channel uses 52 separate precisely spaced frequencies called __________. -
CORRECT ANSWER - Sub carriers
OFDM sends the transmission in parallel across several channels. - CORRECT
ANSWER - True
When a Wireless Client is communicating using an AP, which mode of operation is the client
using? - CORRECT ANSWER - Infrastructure Mode
The area of coverage provided by an AP is called which of the following? - CORRECT
ANSWER - BSA
The Distribution System use two main components called the ____________and the
__________. (Choose two) - CORRECT ANSWER - The Distribution System Medium
The Distribution System Service
Which of the following is true about wireless network operation modes? - CORRECT
ANSWER - a WLAN operating in ad hoc mode does not use an AP
When using an AP as a sensor, what AP mode is being used? - CORRECT ANSWER -
Scanner Mode
The function of an AP is most closely related to which wired networking device? - CORRECT
ANSWER - A Hub
Questions and CORRECT Answers
DSSS uses only DBPSK for modulation. - CORRECT ANSWER - False
(DSSS uses DBPSK at 1 Mbps but uses DQPSK at 2 Mbps)
Because of the relatively high speeds achieved with FHSS, it is widely implemented in WLAN
systems. - CORRECT ANSWER - False
How many adjacent non-overlapping channels may be used in the same physical area using the
2.4 GHz spectrum? - CORRECT ANSWER -3
Which type of RF signal uses only a single frequency for transmission? - CORRECT
ANSWER - narrowband
How wide is an OFDM channel in 2.4 GHz? - CORRECT ANSWER - 20 MHz
Which modulation methods were defined by 802.11a and 802.11g? (Choose all that apply) -
CORRECT ANSWER - 16-QAM
BPSK
64-QAM
What is a disadvantage of narrowband transmissions? - CORRECT ANSWER -
interference from another radio signal
Which system is preferred for 802.11 WLANs that operate at speeds in excess of 11 Mbps? -
CORRECT ANSWER - OFDM
, The amount of time a FHSS station transmits on a single frequency is called which of the
following? - CORRECT ANSWER - Dwell time
Which data rates are supported by PBCC? - CORRECT ANSWER - 5.5, 11, 22, and 33
Mbps
Each OFDM Channel uses 52 separate precisely spaced frequencies called __________. -
CORRECT ANSWER - Sub carriers
OFDM sends the transmission in parallel across several channels. - CORRECT
ANSWER - True
When a Wireless Client is communicating using an AP, which mode of operation is the client
using? - CORRECT ANSWER - Infrastructure Mode
The area of coverage provided by an AP is called which of the following? - CORRECT
ANSWER - BSA
The Distribution System use two main components called the ____________and the
__________. (Choose two) - CORRECT ANSWER - The Distribution System Medium
The Distribution System Service
Which of the following is true about wireless network operation modes? - CORRECT
ANSWER - a WLAN operating in ad hoc mode does not use an AP
When using an AP as a sensor, what AP mode is being used? - CORRECT ANSWER -
Scanner Mode
The function of an AP is most closely related to which wired networking device? - CORRECT
ANSWER - A Hub
