Reasoning

Detailed Solution

102. False Bluetooth is a modern technology. King Blatand lived in the 10th Century – Bluetooth is named after him. He did not invent it.

103. False The passage describes Bluetooth as a simple and convenient way to communicate between these devices, but emphasises that there are some issues with its security.

104. Cannot say The passage states that Bluetooth communicates by radio and that the radio frequency is continually changed for security reasons. However, it does not mention any particular bandwidth that is or is not avoided.

105. True The passage states that Bluetooth-enabled devices can communicate with each other as long as they are within ten metres of each other.

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