1. Suppose a password consisted of a string of nine characters from the English alphabet (26 characters). If each possible password could be tested in a millisecond, how long would it take to test all...

1. Suppose a password consisted of a string of nine characters from the English alphabet (26 characters). If each possible password could be tested in a millisecond, how long would it take to test all possible passwords?




2. Identify three ways in which a process could challenge the security of a computer system if not prevented from doing so by the operating system.




3. If a flaw in an operating system’s security allows a malicious programmer to gain unauthorized access to sensitive data, to what extent should the developer of the operating system be held responsible?




4. Is it your responsibility to lock your house in such a way that intruders cannot get in, or is it the public’s responsibility to stay out of your house unless invited? Is it the responsibility of an operating system to guard access to a computer and its components, or is it the responsibility of hackers to leave the machine alone?