As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area.What term describes the rate at which this expansion happens?
A. MU-MIMO
B. Inverse square law
C. Fresnel zone thinning
D. Ohm's law
What statement about the IEEE 802.11e QoS facility is true?
A. 802.11 QoS is achieved by giving highpriority queues a statistical advantage at winningcontention.
B. Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
C. When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.
D. Toimprove efficiency, Block Acknowledgments arerequired for Voice and Video WMM queues.
E. 802.11 control frames are assigned to the 802.11 EF priority queue.
As defined in the 802.11 specification, legacy Power Save requires an inefficient back-and- forth frame exchange process. Due to this inefficiency, many WLAN device implementations use a variation of 802.11 Power Save to accomplish the same function.
What non-standard power save behavior is used by most Wi-Fi devices in actual legacy Power Save implementations?
A. Client devices ignore the TIM field and automatically send PS-Poll frames after every beacon.
B. After eachbeacon, the AP attempts to empty its frame buffer by sending Wake-on- WLAN frames to wake each dozing client.
C. The Beacon interval is changed from the default 100 time units to 10 or less time units.
D. Clients send null data frames to the AP and switch the power management bit from 1 to 0 toreceive queued data.
What WLAN system feature is required to produce a scenario with the following configuration on a single access point? (Choose 2)
1.
SSID = Guest / BSSID = AA:AA:AA:AA:AA:AA /
VLAN = 22 / Subnet = 192.168.22.0 / RF Channel = 6
2.
SSID = Corporate / BSSID = BB:BB:BB:BB:BB:BB /
VLAN = 33 / Subnet = 192.168.33.0 / RF Channel = 6 /User Type A
3.
SSID = Corporate / BSSID = BB:BB:BB:BB:BB:BB /
VLAN = 44 / Subnet = 192.168.44.0 / RF Channel = 6 / User Type B
A. Multiple WLAN Profiles
B. Call Admission Control
C. Virtual Cell with SCA
D. Access Categories
E. User-based authentication
F. Dual-radio AP hardware
G. Integrated DHCP server
The network administrator at XYZ Company recently attended a training class on wireless security and realized that heshould update the corporate security policy to address WLAN technology. The network administrator is listing the items that should be addressed in the security policy update, and has asked for your input.
What WLAN topics should be addressed by a companysecurity policy? (Choose 3)
A. Theft prevention and data security of WLAN infrastructure devices
B. Wireless intrusion monitoring and response procedures
C. WLAN performance analysis baseline documentation
D. Wired network performance analysis andbaseline documentation
E. Training of the IT staff on WLAN operational security
F. User density planning and AP client association thresholds
What statement accurately describes the RF cables and connectors that are used in an 802.11WLAN system?
A. 75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.
B. Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.
C. Some RF connectorsdo not cause insertion loss.
D. Large diameter RF cables cause greater loss than small diameter cables.
A Wi-Fi Alliance interoperability certificate indicates that a device is a/b/g/n certified. It further indicates one transmit and receive spatial stream for both the 2.4 GHz and 5.0 GHz bands. It further indicates support for both WPA and WPA2 Enterprise and Personal. Finally, it indicates support for EAP-TLS, EAP-TTLS/ MSCHAPv2, PEAPv0/EAP- MSCHAPv2 and PEAPv1/EAP-GTC. Which one of the following statements is false?
A. This client device supports protection mechanisms such as RTS/CTS and/or CTS-to- Self.
B. This client device supports both TKIP and CCMP ciphersuites.
C. 300 Mbps is the maximum supported data rate for this device.
D. This client device supports X.509 certificates for EAP authentication.
What phrase correctly completes the following sentence?
When using WMM Power Save operation, a wireless client device______________.
A. Alternates between awake and dozing, depending on its need to transmit and receive information
B. Enters a low-power radio state until it receives a WMM PS-Poll frame from the AP
C. Experiences higher throughput and lower latency than when operating in Active mode
D. Buffers frames destined to the low-power AP until the AP wakes its radio and begins beaconing again
In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping? (Choose 2)
A. Channels 5 and 10
B. Channels 1 and 5
C. Channels 3 and 7
D. Channels 2 and 8
E. Channels 8 and 11
F. Channels 10 and 13
What can cause an excessively high VSWR (Voltage Standing Wave Ratio) in a WLAN RF transmission line?
A. Animpedance mismatch inthe RF cables and connectors
B. Reflected direct current (DC) voltage on the main RF signal line
C. Attenuation of the RF signal as it travels along the main signal path
D. Crosstalk (inductance) between adjacent RF conductors
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