In a piconet, there can be up to ________ parked nodes in the net.
Answer: C
Correct answer: 255
A piconet has one master and up to seven active slaves, but as many as 255 further devices may be parked - synchronised to the master but not currently exchanging data.
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What is the Bluetooth wireless technology for
Answer: B
Correct answer: personal area network
Bluetooth is a short-range technology, reaching a few metres, and is defined as a personal area network standard - the space around one person and the devices they carry.
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What is the Unauthorised access of information from a wireless device through a bluetooth connection called ?
Answer: B
Correct answer: bluesnarfing
Bluesnarfing is the unauthorised retrieval of data - contacts, messages, files - from a device over Bluetooth. It is distinguished from bluejacking, which only sends an unsolicited message and takes nothing.
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Which one among the following modulation scheme is supported by WiMAX?
Answer: D
Correct answer: all of the mentioned
WiMAX adapts its modulation to the quality of the link, using BPSK when conditions are poor, then QPSK, and QAM when they are good enough to carry more bits per symbol. All three are therefore part of the standard.
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