CWNA Exam Questions & Answers 2023/2024

CWNA Exam Questions & Answers 2023/2024 DSSS uses only DBPSK for modulation. - 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. - ANSWER-False How many adjacent non-overlapping channels may be used in the same physical area using the 2.4 GHz spectrum? - ANSWER-3 Which type of RF signal uses only a single frequency for transmission? - ANSWER-narrowband How wide is an OFDM channel in 2.4 GHz? - ANSWER-20 MHz Which modulation methods were defined by 802.11a and 802.11g? (Choose all that apply) - ANSWER-16-QAM BPSK 64-QAM What is a disadvantage of narrowband transmissions? - ANSWER-interference from another radio signal Which system is preferred for 802.11 WLANs that operate at speeds in excess of 11 Mbps? - ANSWER-OFDM The amount of time a FHSS station transmits on a single frequency is called which of the following? - ANSWER-Dwell time