3. Password authentication questions a. Using an alphabet consisting of 62 characters and a password length of 8 characters, how many different passwords are possible? b. If a brute force attack is being used to attack a password system from an alphabet of 62 characters, and it takes 1 second to test each password, how long does the password have to be so that it takes 1000 days to guess any password

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A: Here is the answer ;

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