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السؤال #1
What statement about the IEEE 802.11e QoS facility is true?
A. 802
B. Four 802
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
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اجابة صحيحة: A

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السؤال #2
Which data rate is supported by 802.11g radios that is not supported by 802.11a radios?
A. 9 Mbps
B. 11 Mbps
C. 12 Mbps
D. 54 Mbps
E. 65 Mbps
F. 130 Mbps
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اجابة صحيحة: B
السؤال #3
A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 9dBi gain, what is the EIRP at the antenna element?
A. 23 dBm
B. 26 dBm
C. 13 dBm
D. 10 dBm
عرض الإجابة
اجابة صحيحة: B
السؤال #4
Which features are incorporated in the802.11-2012 specification and are recommend for robust WLAN client security? (Choose 2)
A. SSID hiding
B. CAPWAP with DTLS
C. 802
D. CCMP cipher suite
E. IPSec VPN
F. MAC address white lists
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اجابة صحيحة: CD
السؤال #5
An AP is advertised as a tri-band, 4x4:4, Wi-Fi 6, 802.11ax AP. Based on this information and assuming it is correctly advertised, what can be determined as certainly true about this AP?
A. It supports four channels in 2
B. It has four radio chains
C. It supports UL-MU-MIMO
D. It uses a modified OpenWRT firmware
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اجابة صحيحة: B
السؤال #6
What factors will have the most significant impact on the amount of wireless bandwidth available to each station within a BSS? (Choose 2)
A. The number of clientstations associated to the BSS
B. The power management settings in theaccess point’s beacons
C. The presence of co-located (10m away) access points on non-overlapping channels
D. The data rates at which nearby client stations are transmitting and receiving data
E. The layer 3 protocol used by each station to transmit data over the wireless link
عرض الإجابة
اجابة صحيحة: AD
السؤال #7
You administer a small WLAN with nine access points. As a small business, you do not run a RADIUS server and use WPA2-Personal for security and the APs are in autonomous mode. Recently, you changed the passphrase for WPA2-Personal in all APs and clients. Several users are now reporting the inability to connect to the network at times and it is constrained to one area of the building and those clients work properly elsewhere. When using a WLAN scanner, you see that the AP covering that area is online and has
A. The AP that primarily covers the problem area is improperly configured
B. The clients are improperly configured
C. The AP that primarily covers the problem area has failed
D. The clients have failed network adapters
عرض الإجابة
اجابة صحيحة: A
السؤال #8
AS an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in any specific remote area. What describes the rate at which this expansion happens?
A. Frontwave thinning theory
B. Ohm's law
C. Return loss or through loss
D. Inverse square law
عرض الإجابة
اجابة صحيحة: D
السؤال #9
A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 9dBi gain, what is the EIRP at the antenna element?
A. 26 dBm
B. 13 dBm
C. 23 dBm
D. 10 dBm
عرض الإجابة
اجابة صحيحة: C
السؤال #10
AP-1 is a 3x3:2 AP. STA-3 is a 3x3:3 client. What is the maximum number of spatial streams that can be used for a downlink HT-OFDM transmission from AP-1 to STA-3?
A. One spatial stream, because the definition of the AP indicates that it is capable of only one spatial stream
B. Three spatial streams, because the definition of the client indicates that it is capable of only three spatial streams
C. Two spatial streams, because the definition of the AP indicates that it is capable of only two spatial streams
D. Three spatial streams, because the definition of the AP indicates that it is capable of only three spatial streams
عرض الإجابة
اجابة صحيحة: C
السؤال #11
Return Loss is the decrease of forward energy in a system when some of thepower is being reflected back toward the transmitter. What will cause high return loss in an RF transmission system, including the radio, cables, connectors and antenna?
A. A Voltage Standing Wave Ratio (VSWR) of 1:1
B. An impedance mismatch between components in the RF system
C. The use of cables longer than onemeter in the RF system
D. High output power at the transmitter and use of a low-gain antenna
عرض الإجابة
اجابة صحيحة: B
السؤال #12
Which of the following frequency ranges are specified for use by IEEE 802.11 radios? (Choose all that apply.)
A. 902 - 928 MHz
B. 2
C. 5
D. 5
E. 5
عرض الإجابة
اجابة صحيحة: BCDE

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