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A PHY Header is added to the PSDU at which sub-layer?
A PHY Header is added to the PSDU at which sub-layer?A . LLCB . MACC . PLCPD . PMDView AnswerAnswer: C Explanation: The PLCP adds a preamble and PHY header to the PSDU. Reference: https://dot11ap.wordpress.com/define-terminology-related-to-the-mac-phy/
What is the function of the PHY Preamble?
What is the function of the PHY Preamble?A . To set the modulation method for the MPDUB . Allows the receiver to detect and synchronize with the signalC . To terminate a conversation between transmitter and receiverD . Carries the NDP used in Transmit Beamforming and MU-MIMOView AnswerAnswer: B
In which element of a Beacon frame would you look to identify the current HT protection mode in which an AP is operating?
In which element of a Beacon frame would you look to identify the current HT protection mode in which an AP is operating?A . HT Capabilities ElementB . HT Protection ElementC . HT Information ElementD . HT Operations ElementView AnswerAnswer: C
hexadecimal value to indicate it is hexadecimal?
Protocol analyzers may present field values in either binary, decimal or hexadecimal. What precedes a hexadecimal value to indicate it is hexadecimal?A . 0xB . %C . HEXD . 16xView AnswerAnswer: A
When configuring a long term, forensic packet capture and saving all packets to disk which of the following is not a consideration?
When configuring a long term, forensic packet capture and saving all packets to disk which of the following is not a consideration?A . Total capture storage spaceB . Individual trace file sizeC . Real-time packet decodesD . Analyzer locationView AnswerAnswer: B
How do you explain this behavior?
Using a portable analyzer you perform a packet capture next to a client STA and you can see that the STA is associated to a BSS. You observe the STA sending packets to the AP and the AP sending packets to the STA. Less the 2% of all packets are...
The network administrator at ABC Engineering has taken a large packet capture from one of their APs running in monitor mode. She has very little knowledge of 802.11 protocols but would like to use the capture file to evaluate the overall health and performance of their wireless network. When she asks your advice, which tool do you recommend she opens the packet capture file with?
The network administrator at ABC Engineering has taken a large packet capture from one of their APs running in monitor mode. She has very little knowledge of 802.11 protocols but would like to use the capture file to evaluate the overall health and performance of their wireless network. When she...
At what data rate was the PHY Preamble transmitted?
When performing protocol analysis, you capture an 802.11ac data frame on channel 52, transmitted at MSC 8. At what data rate was the PHY Preamble transmitted? A. 54 Mbps B. 6 Mbps C. 86.7 Mbps D. 78 MbpsView AnswerAnswer: B Explanation:The transmitter sends the preamble at 1 Mbps (802.11 or...
802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?
802.11k Neighbor Requests and Neighbor Reports are sent in what type of Management Frames?A . RRMB . ActionC . BeaconD . Reassociation Request and Reassociation ResponseView AnswerAnswer: C
In a Spectrum Analyzer the Swept Spectrogram plot displays what information?
In a Spectrum Analyzer the Swept Spectrogram plot displays what information?A . The RF time domainB . RF power present at a particular frequency over the course of timeC . Wi-Fi Device informationD . Duty cycle in the frequency domainView AnswerAnswer: D
