Homework Answers
Since the password has case insensitive alphabet letters, we have 26 possible alphabets for a single letter in the password. Those are A - Z ( or ) a - z since both A and a are considered as same. Using brutal force approach, a single letter in the password has 26 possibilities, so for 5 letters in the password we have 26 * 26 * 26 * 26 * 26 i.e 11881376 possibilities. So, the hacker has to try 11881376 combinations in order to break the password.
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QUESTION 6 A password consists of 5 alphabet letters, case insensitive. In the worst case, how...
QUESTION 8 A password consists of 5 digits of 0 to 9. In the worst case,...
QUESTION 8 A password consists of 5 digits of 0 to 9. In the worst case, how many combinations does a hacker must try in order to break the password brutal force? Write your answer in exact Integer QUESTION Use Cesar cipher with offset 21 to encrypt "UHD"
A password consists of 4 letters among 26 lower-case English alphabet letters and 10 digits: 0,1,...,9....
A password consists of 4 letters among 26 lower-case English alphabet letters and 10 digits: 0,1,...,9. (i) How many different passwords that contain at least one digit can be formed? (ii) How many different passwords that contain at least one digit and at least one letter can be formed?
Assume that a word consists of 5 lower-case letters of the alphabet. Assume that repeated letters...
Assume that a word consists of 5 lower-case letters of the alphabet. Assume that repeated letters are NOT allowed to use in the word. How many words end with “t”? (4 points) Assume that a word consists of 5 lower-case letters of the alphabet. If the word needs to contain letter “o”, how many such strings are there? (4 points)
There are 26 letters in the alphabet. How many distinct passwords could be made (non-case-sensitive) if...
There are 26 letters in the alphabet. How many distinct passwords could be made (non-case-sensitive) if a password must be 5 characters long and no letter can be repeated? Question 9 options: 313,950 65,780 7,893,600 11,881,376
IN DETAIL EXPLAIN Problem 1: (a) An outfit consists of a blouse and a skirt. If...
IN DETAIL EXPLAIN
Problem 1: (a) An outfit consists of a blouse and a skirt. If there are 6 skirts and 8 blouses from which to choose, then how many possible blouse-skirt choices are there? (b) In the worst case, how many attempts would a hacker try before finding a password given that it is 8 characters long that can be case-sensitive alphabetic, 10 digit, or the seven punctuation characters of!, a, S, &, *, G) Example valid passwords: aaaaaaaa,...
Suppose that you open an email account and you are told that you need six-character password...
Suppose that you open an email account and you are told that you need six-character password & the characters must be alpha-numeric ( either alphabetical or numerical). Assume that a lower case letter is different from an upper case one. a) How many passwords are possible? Give the exact answer and do not use scientific notation. Show some work. b) Suppose a computer hacker tries to guess what your password is by testing all possible passwords and it takes his...
Question 14 5 pts Imagine your alphabet is literally the letters in GO JACKETS. Let's ignore...
Question 14 5 pts Imagine your alphabet is literally the letters in GO JACKETS. Let's ignore the space. So = {G, 0,J,A,C,K, E,T, S}. Notice that alphabet has 9 letters. If you cannot use any letter more than once, how many unique strings are there that are 5 letters long using letters from our alphabet, Remember we cannot reuse a letter in the same 5 letter string, so "SOOTS" would be illegal. C19,4) 95 9!/4! C19,5)
Please show explanation on how you got answer (Question 1 )How many best and worst case...
Please show explanation on how you got answer (Question 1 )How many best and worst case for a binary search on sorted array of 4 elements A: Worst - 2 , Best - 1 B: Worst - 2 , Best - 0 C: Worst - 6 , Best - 0 D: Worst - 6 , Best - 1 E: Worst - 3 , Best - 1 (Question 2 )How many best and worst case for a binary search on sorted...
How many different passwords of size 6 can be formed using English alphabet characters if the...
How many different passwords of size 6 can be formed using English alphabet characters if the first letter must be a capital letter and the remaining letters must be lower case? a) 26 * C(25, 5) b) P(26, 5) c) 26 * P(26, 5) d) 26 * C(26, 5) e) P(26, 6)
Can someone solve these for me? Consider the equation X1 X2X3 + X4+X5 40. How many different solutions does this equation have if all the variables must be positive integers? Enter the exact numeric...
Can someone solve these for me?
Consider the equation X1 X2X3 + X4+X5 40. How many different solutions does this equation have if all the variables must be positive integers? Enter the exact numeric answer QUESTION 2 Suppose that a license plate consists of three letters followed by three digits. How many different license plates start with the letter A if letters and digits cannot be repeated? Enter the exact numeric answer.
Consider the equation X1 X2X3 + X4+X5 40....
QUESTION 8 A password consists of 5 digits of 0 to 9. In the worst case, how many combinations does a hacker must try in order to break the password brutal force? Write your answer in exact Integer QUESTION Use Cesar cipher with offset 21 to encrypt "UHD"
A password consists of 4 letters among 26 lower-case English alphabet letters and 10 digits: 0,1,...,9. (i) How many different passwords that contain at least one digit can be formed? (ii) How many different passwords that contain at least one digit and at least one letter can be formed?
IN DETAIL EXPLAIN
Problem 1: (a) An outfit consists of a blouse and a skirt. If there are 6 skirts and 8 blouses from which to choose, then how many possible blouse-skirt choices are there? (b) In the worst case, how many attempts would a hacker try before finding a password given that it is 8 characters long that can be case-sensitive alphabetic, 10 digit, or the seven punctuation characters of!, a, S, &, *, G) Example valid passwords: aaaaaaaa,...
Question 14 5 pts Imagine your alphabet is literally the letters in GO JACKETS. Let's ignore the space. So = {G, 0,J,A,C,K, E,T, S}. Notice that alphabet has 9 letters. If you cannot use any letter more than once, how many unique strings are there that are 5 letters long using letters from our alphabet, Remember we cannot reuse a letter in the same 5 letter string, so "SOOTS" would be illegal. C19,4) 95 9!/4! C19,5)
Can someone solve these for me?
Consider the equation X1 X2X3 + X4+X5 40. How many different solutions does this equation have if all the variables must be positive integers? Enter the exact numeric answer QUESTION 2 Suppose that a license plate consists of three letters followed by three digits. How many different license plates start with the letter A if letters and digits cannot be repeated? Enter the exact numeric answer.
Consider the equation X1 X2X3 + X4+X5 40....
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