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Solved: Password Policy According to the Sefton Council
Chapter , Problem 71AYU(choose chapter or problem)
Problem 71AYU
Password Policy According to the Sefton Council Password Policy (August 2007), the United Kingdom government recommends the use of “Environ passwords with the following format: consonant, vowel, consonant, consonant, vowel, consonant, number, number (for example, pinray45).”
(a) Assuming passwords are not case sensitive, how many such passwords are possible (assume that there are 5 vowels and 21 consonants)?
(b) How many passwords are possible if they are case sensitive?
Questions & Answers
QUESTION:
Problem 71AYU
Password Policy According to the Sefton Council Password Policy (August 2007), the United Kingdom government recommends the use of “Environ passwords with the following format: consonant, vowel, consonant, consonant, vowel, consonant, number, number (for example, pinray45).”
(a) Assuming passwords are not case sensitive, how many such passwords are possible (assume that there are 5 vowels and 21 consonants)?
(b) How many passwords are possible if they are case sensitive?
ANSWER:
Problem 71AYU
Answer:
Step1 of 1:
We have According to the Sefton Council Password Policy (August 2007), the United Kingdom government recommends the use of “Environ passwords with the following format: consonant, vowel, consonant, consonant, vowel, consonant, number, number.
a).
Use the general multiplication rule for each character in a sequence, multiply by 21 consonants, 5 for vowels, and 10 for numbers.Assuming passwords are not case sensitive,number of possible passwords is given by
passwords = consonantvowel
consonant
consonant
vowel
consonant
number
number