1) What's the probability that "abcd" matches a randomly generated password of four lowercase characters from...
1) What's the probability that "abcd" matches a randomly generated password of four lowercase characters from the alphabet?
2) What's the probability that "abcd" matches a randomly generated password of four uppercase,lowercase, number (0-9), or special characters (!,@,#,$,%)
3) What's the probability that "abcdefgh" matches a randomly generated password of eight lowercase characters from the alphabet?
Homework Answers
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1) What's the probability that "abcd" matches a
randomly generated password of four lowercase characters from...
in C++, Design a program that asks the user to enter a password, and then analyze...
in C++, Design a program that asks the user to enter a password, and then analyze the password, and then analyze the password for the following weaknesses: 1. Fewer than 8 characters 2. Does not contain at least one uppercase letter and one lowercase latter 3. Does not contain at least one numeric digit 4. Does not contain at least one special character( a character that is not a letter or numeric digit) 5. Is a sequence of consecutive uppercase...
3. A computer system uses passwords that contain exactly eight characters, and each character is one...
3. A computer system uses passwords that contain exactly eight characters, and each character is one of the 26 lowercase letter (a -z) or 26 uppercase letters (A - Z) or 10 integers (0-9). Let Ω denote the set of all possible passwords. Suppose that all passwords in Ω are equally likely. Determine the probability for each of the following: (a) Password contains all lowercase letters given that it contains only letters (b) Password contains at least 1 uppercase letter...
A computer system uses passwords that contain exactly 3 characters, and each character is one of the 26 lowercase l...
A computer system uses passwords that contain exactly 3 characters, and each character is one of the 26 lowercase letters (a-z) or 26 uppercase letters (A-Z) or 10 integers (0-9). Let Ω denote the set of all possible passwords, and let and denote the events that consist of passwords with only letters or only integers, respectively Suppose that all passwords in 2 are equally likely. Determine the following probabilities. Round your answers to three decimal places (e.g. 98.765). (c) The...
Problem 1. Assume a password in a computer system contains eight character, each can be a...
Problem 1. Assume a password in a computer system contains eight character, each can be a digit (0 to 9), an uppercase English alphabet, or a lowercase English alphabet. How many password are there (a) if letters can be repeated? (b) if no letter can be repeated? (c) starts with X and letters can be repeated? (d) either starts with X or ends with 10 (letters can be repeated)? (e) neither starts with X nor ends with 10 (letters can...
Write a program that inputs a string from the user representing a password, and checks its...
Write a program that inputs a string from the user representing a password, and checks its validity. A valid password must contain: -At least 1 lowercase letter (between 'a' and 'z') and 1 uppercase letter (between 'A' and 'Z'). -At least 1 digit (between '0' and '9' and not between 0 and 9). At least 1 special character (hint: use an else to count all the characters that are not letters or digits). -A minimum length 6 characters. -No spaces...
I just started working on some code for a password creator. I was doing some testing and I keep g...
I just started working on some code for a password creator. I was doing some testing and I keep getting this error: Exception in thread "main" java.lang.StringIndexOutOfBoundsException: String index out of range: 6 at java.base/java.lang.StringLatin1.charAt(StringLatin1.java:47) at java.base/java.lang.String.charAt(String.java:693) at PasswordCreater.check(PasswordCreater.java:56) at Password.main(Password.java:23 In my code I am having the user create a password that is at least 6 characters long, but no more than 16. Also, include at least one lowercase letter, one uppercase letter, one number digit and one special...
18. At a certain company, passwords must be from 3-5 characters long and composed of the...
18. At a certain company, passwords must be from 3-5 characters long and composed of the 26 letters of the alphabet, the ten digits 0-9, and the 14 symbols !,@,#,$,%,^,&,*,().-+,{, and ). (As a note, the password does not REQUIRE at least one character of each type. In other words, it is fine if your password doesn't have any digits or is only special symbols.) a. How many passwords are possible if repetition of characters is allowed? [4 points] b....
A CERTAIN program to user's password containing rules such as least n length, one uppercase, lowercase,...
A CERTAIN program to user's password containing rules such as
least n length, one uppercase, lowercase, one digit and white space
is given as the code down below. So, simiiar to those rules, I need
the code for the following questions post in pictures such as no
more three consecutive letters of English alphabets, password
should not contain User name and so on.
//GOAL: To learn how to create that make strong passwords
//Purpose: 1)To learn some rules that makes...
A company‘s computer system requires passwords to be 7 to 9 characters long, and ...
A company‘s computer system requires passwords to be 7 to 9 characters long, and to consist of uppercase and lowercase letters {A, a, B, b, C, c, . . . , Z, z}, digits {0, 1, 2, 3, . . . , 9} and the special characters {&, #, $, *, +, _}, and to contain at least one special character or digit. How many such passwords are there?
1. A license plate must be 7 characters long: available characters are uppercase letters (26 possible...
1. A license plate must be 7 characters long: available characters are uppercase letters (26 possible letters for each spot), digits (0-9, so 10 possible numbers for each spot), and special characters!*-& and a blank space (5 possible special characters). A rental car company wants all of its cars' license plates to begin with 4 letters, then have 1 special character, and then 2 digits, e.g. "ABCD 68" is permissible, but "ABCD6 8" is not. a) How many different license...
3. A computer system uses passwords that contain exactly eight characters, and each character is one of the 26 lowercase letter (a -z) or 26 uppercase letters (A - Z) or 10 integers (0-9). Let Ω denote the set of all possible passwords. Suppose that all passwords in Ω are equally likely. Determine the probability for each of the following: (a) Password contains all lowercase letters given that it contains only letters (b) Password contains at least 1 uppercase letter...
A computer system uses passwords that contain exactly 3 characters, and each character is one of the 26 lowercase letters (a-z) or 26 uppercase letters (A-Z) or 10 integers (0-9). Let Ω denote the set of all possible passwords, and let and denote the events that consist of passwords with only letters or only integers, respectively Suppose that all passwords in 2 are equally likely. Determine the following probabilities. Round your answers to three decimal places (e.g. 98.765). (c) The...
18. At a certain company, passwords must be from 3-5 characters long and composed of the 26 letters of the alphabet, the ten digits 0-9, and the 14 symbols !,@,#,$,%,^,&,*,().-+,{, and ). (As a note, the password does not REQUIRE at least one character of each type. In other words, it is fine if your password doesn't have any digits or is only special symbols.) a. How many passwords are possible if repetition of characters is allowed? [4 points] b....
A CERTAIN program to user's password containing rules such as
least n length, one uppercase, lowercase, one digit and white space
is given as the code down below. So, simiiar to those rules, I need
the code for the following questions post in pictures such as no
more three consecutive letters of English alphabets, password
should not contain User name and so on.
//GOAL: To learn how to create that make strong passwords
//Purpose: 1)To learn some rules that makes...
1. A license plate must be 7 characters long: available characters are uppercase letters (26 possible letters for each spot), digits (0-9, so 10 possible numbers for each spot), and special characters!*-& and a blank space (5 possible special characters). A rental car company wants all of its cars' license plates to begin with 4 letters, then have 1 special character, and then 2 digits, e.g. "ABCD 68" is permissible, but "ABCD6 8" is not. a) How many different license...
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