Answer:d) Mono-alphabetic substitution rules
Explanation: Poly-alphabetic cipher is the cryptography that is done by using the many alphabets in substitutional way. They are supposed to have a good security because they use cipher text alphabets for the encryption and then decrypts it.
Substitution of the alphabets is done by the rule of the mono-alphabetic substitution rules.Other given options are incorrect because they are not used in the cryptography of the alphabetic cipher. Thus option (d) is the correct answer.
Clouds might be ordered by shape and by height. Luke Howard, a British drug specialist was the first to portray cloud shapes utilizing Latin terms, for example, cirrus, cumulus or stratus. The division of mists into ten fundamental cloud structures or cloud genera depends on his productions.
After the viruses would be detected we have to clean them.
means we have to erase the virus .
Answer:
I don't know
Explanation:
with data you can access all things in the world
