(10 points) Suppose you could use all 128 characters in the ASCII character set in a password. Answer the following questions: a) (4 points) What is the number of 8-character passwords that could be constructed from such a character set? Justify your number with mathematical explanations. b) (4 points) How long will it take an attacker to guess such a password if he could test a password every 10 nanoseconds? Convert it into a human readable format, e.g., how many years, how many days, or how many hours. Just provide approximate time. It does not need to be accurate. c) (2 points) Do you think this password length is strong enough? Why