Answer:
They spread when the virus is attached either to software or document and is transferred over to another computer using a disk,file sharing method or though email attachments.
<u>Answer:</u>
For those people watching football games from their home without spending money on tickets, football for them is nonrival and nonexcludable.
Option: (D)
<u>Explanation:</u>
- Non rival means the consumption of service by consumer without avoiding others to use it.
- Like the football match watching from balcony they are not preventing any other users from watching it.
- Similarly nonexcludable also means the goods or service which cannot be excluded to the people by the use of one consumer, as in case of the match viewer from balcony.
<span>True. It is a sign of
democracy that people are free to disagree with certain policies or laws in
government. They are free to express
their opinions without fear of being intimidated or imprisoned for speaking
your mind. Everyone has the right to do
that. Only an oppressive regime would
threaten or imprison someone who disagrees with their politics.</span>
D is the answer just so you know
