Which of the following is required for a hash?

Which of the following is required for a hash?
A . Not vulnerable to a brute force attack
B. Few collisions
C. Must use SALT
D. Not reversible
E. Variable length input, fixed length output
F. Minimum key length

Answer: D,E

Explanation:

Correct answers: Variable length input, fixed length output and Not reversible https://en.wikipedia.org/wiki/Hash_function

A hash function is any function that can be used to map data of arbitrary size to fixed-size values. The values returned by a hash function are called hash values, hash codes, digests, or simply hashes. The values are used to index a fixed-size table called a hash table. Use of a hash function to index a hash table is called hashing or scatter storage addressing.