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What special signal is issued periodically from an AP and contains the network transmission rate and service set identifier (SSID) , as well as other information needed for a computer to associate with the AP?


A) broadcast frame
B) beacon frame
C) announcement packet
D) alert message

E) All of the above
F) B) and C)

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The wireless spectrum, as defined by the FCC, spans between which two frequencies?


A) 9 kHz and 300 GHz
B) 125 kHz and 150 GHz
C) 3 kHz and 500 GHz
D) 3 MHz and 300 GHz

E) A) and C)
F) All of the above

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In Linux, what command can be used for viewing and setting wireless interface parameters?


A) ifconfig
B) iwconfig
C) wlanconf
D) wifid

E) B) and D)
F) B) and C)

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Why should the WPS PIN feature be avoided if possible?

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WPS (Wi-Fi Protected Setup) is a user-fr...

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802.11ac Wave 2 devices can theoretically support how much maximum throughput?


A) 600 Mbps
B) 1.3 Gbps
C) 3.47 Gbps
D) 6.93 Gbps

E) All of the above
F) B) and C)

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The most secure Wi-Fi communication is made possible by combining a RADIUS server with WPA or WPA2, known as WPA-Enterprise or WPA2-Enterprise, respectively.

A) True
B) False

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The Wi-Fi Protected Setup PIN can be easily cracked through a brute force attack.

A) True
B) False

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What type of device can be used to assess the quality of a wireless signal?


A) Wi-Fi analyzer
B) spectrum analyzer
C) channel scanner
D) frequency hopper

E) A) and D)
F) B) and D)

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The Wireless Personal Area Network (WPAN) is defined in the 802.15 standard.

A) True
B) False

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The LLC sublayer is primarily concerned with managing MAC addresses in message frames.

A) True
B) False

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At what layer of the OSI model do the 802.11 standards vary?


A) Physical layer
B) Network layer
C) Data link layer
D) Transport layer

E) A) and D)
F) A) and C)

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Radiation patterns can be used to classify antennas into what two basic categories?

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The two basic categories that antennas c...

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Near-field communication devices send data at what fixed frequency?


A) 8.65 MHz
B) 13.56 MHz
C) 21.39 MHz
D) 47.1 MHz

E) B) and C)
F) None of the above

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Infrared technology utilizes an LED that emits light with shorter wavelengths than red light.

A) True
B) False

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What is the hidden node problem, and how can it be mitigated?

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The hidden node problem occurs where a n...

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In an 802.11 data frame, what is the size of the frame check sequence field?


A) 2 bytes
B) 4 bytes
C) 6 bytes
D) 8 bytes

E) A) and C)
F) B) and D)

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You are troubleshooting a client's wireless networking issue. Which of the following will prevent the client from connecting to the network?


A) The client has a wireless profile configured for the "campus" SSID, but the access point is broadcasting the "CAMPUS" SSID.
B) The client is using an 802.11n wireless adapter, but the access point only supports up to 802.11g.
C) The client is using a network adapter with outdated firmware.
D) The client is only able to get line of sight with an omnidirectional antenna.

E) B) and D)
F) A) and D)

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In an 802.11 data frame, what is the maximum amount of data that can be sent?


A) 1500 bytes
B) 2312 bytes
C) 4582 bytes
D) 9000 bytes

E) B) and C)
F) A) and D)

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A wireless node that is in active scanning mode transmits what special type of frame in order to find available access points?


A) beacon frame
B) association request
C) probe frame
D) ping frame

E) B) and D)
F) A) and B)

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NFC tags are very expensive and cannot be purchased blank, requiring them to be pre-loaded.

A) True
B) False

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