Aspire Faculty ID #18964 · Topic: UGC NET Computer Science Nov 2020 (Paper II) · Just now
UGC NET Computer Science Nov 2020 (Paper II)

Which among the following statement(s) is (are) true?

(A) A hash function takes a message of arbitrary length and generates a fixed length code.

(B) A hash function takes a message of fixed length and generates a code of variable length.

(C) A hash function may give same hash value for distinct messages.

Choose the correct answer from the options given below:

Solution

A hash function takes an input message of arbitrary length and produces a fixed length hash value.

So, statement (A) is true.

Statement (B) is false because hash function output is fixed length, not variable length.

Statement (C) is true because two different messages may produce the same hash value. This is called collision.

Therefore, true statements are (A) and (C) only.

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