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Which one of the following 802.11 PHYs is more likely to be used in an industrial deployment but not likely to be used in standard office deployments?
Which one of the following 802.11 PHYs is more likely to be used in an industrial deployment but not likely to be used in standard office deployments?A . SIGB . VHTC . OFDMD . HTView AnswerAnswer: A
What is the most likely cause of the unpredictable client band selection behavior?
ABC Company has a 2.4 and 5 GHz WLAN deployment. DFS functionality is enabled as required by the regulatory domain and APs use DFS channels as long as radar is not detected. Band steering is also enabled to encourage dual-band clients to use frequency bands with more capacity. Your performance...
What type of security can be used to stop attackers from seeing the MAC addresses used by your legitimate 802.11 WLAN devices?
What type of security can be used to stop attackers from seeing the MAC addresses used by your legitimate 802.11 WLAN devices?A . MAC filteringB . CCMP/AES encryptionC . MAC spoofingD . Rogue mitigationE . Rogue detectionF . None of the aboveView AnswerAnswer: F
Requiring all frames to be transmitted as A-MPDU frames increases performance due to which of the following? (Choose all that apply.)
Requiring all frames to be transmitted as A-MPDU frames increases performance due to which of the following? (Choose all that apply.)A . Frame overhead is reduced.B . Block ACK is required.C . Frame information is shifted from the MPDU header to the PLCP header.D . Reduced Interframe Space (RIFS) decreases...
If an 802.11 RF transmission reaches a receiving antenna simultaneously by direct and reflected paths, what effect will the reflected signal have on the signal that took the direct line-of-sight path?
If an 802.11 RF transmission reaches a receiving antenna simultaneously by direct and reflected paths, what effect will the reflected signal have on the signal that took the direct line-of-sight path?A . The direct signal will only be received if the reflected signal is more than 180 degrees out of...
What is the traditional data-forwarding model for 802.11 user traffic when WLAN controllers are deployed?
What is the traditional data-forwarding model for 802.11 user traffic when WLAN controllers are deployed?A . Distributed data forwardingB . Autonomous forwardingC . Proxy data forwardingD . Centralized data forwardingE . All of the aboveView AnswerAnswer: D
In the 1970’s _______ had a wireless communication model for transmitting between islands.
In the 1970’s _______ had a wireless communication model for transmitting between islands.A . ChinaB . HawaiiC . AlaskaD . RussiaView AnswerAnswer: B
What is the channel and band of a Wi-Fi transmission whose center frequency is 5.300 GHz?
What is the channel and band of a Wi-Fi transmission whose center frequency is 5.300 GHz?A . U-NII-1 channel 30B . U-NII-1 channel 60C . U-NII-2 channel 30D . U-NII-2 channel 60View AnswerAnswer: D
The IEEE 802.11-2012 standard defines communication mechanisms at which layers of the OSI model? (Choose all that apply.)
The IEEE 802.11-2012 standard defines communication mechanisms at which layers of the OSI model? (Choose all that apply.)A . NetworkB . PhysicalC . TransportD . ApplicationE . Data-LinkF . SessionView AnswerAnswer: BE
dBi is an expression of what type of measurement?
dBi is an expression of what type of measurement?A . Access point gainB . Received powerC . Transmitted powerD . Antenna gainView AnswerAnswer: D
