<span>Spyware is a program placed on a computer without the user's knowledge that secretly collects information about the user.
</span><span>The spyware gathers information and can send this information to another program or entity which can take control over the device or use personal information to harm the user. </span>
Explanation: The CPU is the main control chip which calculates what has to be done in order for your computer to function.
(Very interesting question you had. Hope this answer helps)
A burn-in test is a test which is usually performed on a system or component by running it for a long time in order to bring out any errors or system failures etc.
While doing it on CPU the data must be backed up as any kind of error or failure may result in the loss of data, at time systems can be repaired to retrieve data but still there is no guarantee, backing up is the best option.
The answer would be between the base station and the subscriber station.