What is an AIFS?
A. A form of aggregation performed at the PLCP sub-layer
B. The shortest period of time a STA can sleep
C. A medium access method introduced by 802.11n, but never implemented
D. A variable Interframe Space introduced by802.11e to help prioritize medium access for different Access Categories
Why would a STA that supports 802.11k Radio Measurement send a Neighbor Request to an AP?
A. To learn about neighboring interference sources and tune its RF radio accordingly
B. To inform the current AP about the STA's intent to roam to a neighboring AP, ensuring a seamless handover
C. To request a list of neighboring APs which the STA can use as roaming candidates
D. To request a list of neighboring STAs which enables the STA to better pick the right protectionmechanisms
What is the default 802.11 authentication method for a STA when using Pre-RSNA?
A. Open System
B. Shared Key
C. 4-Way Handshake
D. PSK
Which one of the statements regarding the Frame Control field in an 802.11 MAC header is true?
A. Only Control frames have a Frame Control field
B. The Frame Control field contains three sub-fields and eight one-bit flags
C. The Frame Control field is used to communicate the duration value
D. The Frame Control field is always set to 0
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 Element
B. HT Protection Element
C. HT Information Element
D. HT Operations Element
Which one of the following statements is not true concerning DTIMs?
A. Buffered Broadcast and Multicast traffic will be transmitted following a DTIM
B. The DTIM interval can dictate when an STA will wake up to listen to beacon frames
C. DTIM stands for Delivery Traffic Indication Map
D. Every Beacon frame must contain a DTIM
Which one of the following portions of information is communicated in the PHY Header?
A. Signal strength
B. Date rate
C. SNR
D. Noise
In a Spectrum Analyzer the Swept Spectrogram plot displays what information?
A. The RF time domain
B. RF power present at a particular frequency over the course of time
C. Wi-Fi Device information
D. Duty cycle in the frequency domain
As a wireless network consultant you have been called in to troubleshoot a high-priority issue for one of your customers. The customer's office is based on two floors within a multi-tenant office block. On one of these floors (floor 5) users cannot connect to the wireless network. During their own testing the customer has discovered that users can connect on floor 6 but not when they move to the floor 5. This issue is affecting all users on floor 5 and having a negative effect on productivity. To troubleshoot this issue, you perform both Spectrum and Protocol Analysis. The Spectrum Analysis shows the presence of Bluetooth signals which you have identified as coming from wireless mice. In the protocol analyzer you see the top frame on the network is deauthentication frames. On closer investigation you see that the deauthentication frames' source addresses match the BSSISs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF. What do you conclude from this troubleshooting exercise?
A. The customer should replace all their Bluetooth wireless mice as they are stopping the users on floor 5 from connecting to the wireless network
B. The users on floor 5 are being subjected to a denial of service attack, as this is happening across the entire floor it is likely to be a misconfigured WIPS solution belonging to the tenants on the floor below
C. The customers APs are misbehaving and a technical support case should be open with the vendor
D. The CCI from the APs on the floor 4 is the problem and you need to ask the tenant below to turn down their AP's Tx power
Which piece of information Is not transmitted in an HT PDDU header?
A. Number of Spatial Streams
B. PPDU length
C. Channel number
D. MCS index
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