CWNA-107

You are troubleshooting a problem with interference from a non-802.11 device. Given that the device is not a WLAN device, you cannot use a protocol analyzer and have chosen to use a spectrum analyzer. You want to view the signal from the interfering device over time to sec the activity...

The IEEE 802.11-2012 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specification (PHY)?A . OFDMB . HR/DSSSC . ERP-PBCCD . DSSSView AnswerAnswer: A

What statement about 802.11 WLAN bridges is true?A . WLAN bridges only work in the 2.4 GHz frequency band and they support only SISO communicationsB . WLAN bridges must use a channel with acceptable SNR at both transceivers to maintain the desired data rate bi-directionallyC . WLAN bridges may support...

What is appended to the end of each 802.11 data frame after the payload?A . FCSB . PreambleC . MAC headerD . PHY headerView AnswerAnswer: D

What cipher suite is specified by the 802.11-2016 standard and is not deprecated?A . Temporal Key Integrity ProtocolB . Extensible Authentication ProtocolC . Counter Mode with CBC-MAC ProtocolD . Wired Equivalent PrivacyView AnswerAnswer: B

You are selecting antennas for a WLAN operating in the 5 GHz frequency band. What specifications should be evaluated for an antenna before it is implemented in this WLAN system?A . 802.11ad compatibilityB . TPC supportC . Impedance in OhmsD . Return Loss RatingView AnswerAnswer: C

What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?A . OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.B . OFDM was first introduced in 802. 11a and is used by the ERP, HT and VHT PHYs as...

When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond?A . For each probe request frame, only one AP may reply with a probe response.B . Each AP responds in turn after preparing a probe response and winning contention.C . Each AP...

What is a channel mode specified by the 802.11n (High Throughput) PHY?A . Frequency HoppingB . 20/40 MHzC . 22 MHzD . 80 MHzView AnswerAnswer: B

What factors does not influence the distance at which an RF signal can be effectively received?A . Free Space Path LossB . Receiving station’s radio sensitivityC . Transmitting station’s output powerD . Receiving station’s output powerView AnswerAnswer: D