The AccessPlus system at ISU has the following policy for
creating a password:
-Passwords must be...
The AccessPlus system at ISU has the following policy for
creating a password:
-Passwords must be exactly 8 characters in length.
-Passwords must include at least one letter (a-z, A-Z) or
supported special character (@, #, $ only).
-All letters are case-sensitive.
-Passwords must include at least one number (0-9).
-Passwords cannot contain spaces or unsupported special
characters.
According to this policy, how many possible AccessPlus passwords
are available? (Round to the nearest
trillion)
A hard-headed hacker is attempting to login into Larry’s Amazon
account by guessing his password. The...
A hard-headed hacker is attempting to login into Larry’s Amazon
account by guessing his password. The hacker does not give up until
she tries 1 thousand different passwords. What is the probability
that she will guess the password and break in if, by rules, the
password must consist of:
a. 8 different lower-case letters
b. 8 different letters, some may be upper-case, and it is case
sensitive
c. any 8 letters, upper- or lower-case, and it is case
sensitive
d....
A company wants to impose a more secure password system for its
employees to use on...
A company wants to impose a more secure password system for its
employees to use on the company’s network. The current policy
requires a minimum of seven characters. The system under
consideration requires a minimum of eight characters. The new
system will allow repetition of characters, but not doubling (e.g.,
the sequence 121 would be acceptable, but not 112).
For both password systems, assume the following:
Only alphanumeric characters can be used in the passwords,
without any spaces or symbols....
The company has agreed on an 8 character password format,
comprised of upper case letters ,...
The company has agreed on an 8 character password format,
comprised of upper case letters , lower case letters, and digits
(0-9). Find the number of passwords possible where the first 2
characters have to be upper case letters, the next 5 can be lower
case letters or digits , and the last character has to be an upper
case letter. Here are the restrictions:
a. Repetitions are allowed
b. Repetitions are not allowed
A computer password consists of: • letters {a, A, 6, B,
...,2,Z}, • digits {0, 1,...,9),...
A computer password consists of: • letters {a, A, 6, B,
...,2,Z}, • digits {0, 1,...,9), or = 16 • special characters
{!,@,#,$,%}. In addition, a password must • contain at least one
upper case letter, • contain at least one special character. How
many passwords of length 8 are possible?