CWNP Wireless Network Administrator (CWNA) - CWNA-109 Exam Practice Test
What is a common source of RF interference in the 2.4 GHz ISM band that does not originate from an 802.11 device?
Correct Answer: A
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What is the most effective method for testing roaming in relation to 802.11 VoIP handsets?
Correct Answer: D
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Return Loss is the decrease of forward energy in a system when some of the power 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?
Correct Answer: C
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You have implemented an 802.11ax WLAN for a customer. All APs are four stream HE APs. The customer states that it is essential that most of the clients can use the OFDMA modulation scheme.
What do you tell the customer?
What do you tell the customer?
Correct Answer: B
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An RF signal encounters a wall as it propagates from a transmitter to a receiver, and some of the signal passes through the wall while losing strength. What is this behavior known as?
Correct Answer: B
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What term describes the ratio between the desired signal strength and the level of background RF noise present at a receiver?
Correct Answer: D
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A wireless engineer needs to calculate the total power radiated from an antenna, accounting for transmitter power, cable/connector losses, and antenna gain. What is this calculated value called?
Correct Answer: A
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A dual-band 802.11ac AP must be powered by 802.3at PoE. As a class 4 device, what minimum power level should be received at the AP?
Correct Answer: C
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Which semi-directional antenna type is commonly used for point-to-point bridge links and features multiple elements along a straight boom to focus RF energy in a narrow beamwidth?
Correct Answer: B
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When considering data rates available in HT and VHT PHY devices, in addition to the modulation, coding, channel width, and spatial streams, what impacts the data rate according to the MCS tables?
Correct Answer: C
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What security option for 802.11 networks supports SAE and requires protected management frames?
Correct Answer: D
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