To unfreeze the mac book pro, there are two ways :
a. <span>Click the apple logo which is at the top
left of the menu bar and then select 'force quit'.
b. Hold down the option,
command, and escape buttons and then select 'force quit'. </span>
If all else fails, best option is to hold down the power button on the keyboard till it shuts down.
I believe this is false as some radio waves can travel beyond our solar system
Answer: Time division multiplexing
Explanation: because a slot is equivalent to 125ms
And each position inside a slot is for each signal and a single bit frim each voice conversation is sent during each 125ms slot