Answer:
B. Firewall
Explanation:
Firewall, just like encryption prevents unauthorized entry into a computer. However, Firewall can be implemented in both hardware or software form; or even a combination of both.
human center because we describe stuff by what we see and obserevs
<span>it is caused by A.overgrazing
</span>
This is known as DNS poisoning, so called because it 'poisons' the entries of the DNS with false information.
