hello pls don't report me for this pls and thank hello all hackers i need your help i need you to get my account back on nitro type the username is dconfire and the old password was 7430 but i don't have my account anymore cause the password changed so pls help an get me the new password

Which of the following is a way the operating system prevents unknown or unauthorized users from accessing the system?

Which two editions of windows 7 support 64 bit cpus? choose two out of professional, business, starter, or home premium.

The following function returns a string of length n whose characters are all 'x'. give the order of growth (as a function of n) of the running time. recall that concatenating two strings in java takes time proportional to the sum of their lengths. public static string f(int n) { if (n == 0) return ""; if (n == 1) return "x"; return f(n/2) + f(n - n/2); } options: a) constant b) logarithmic c) linear d) linearithmic e)quadratic f)cubic g) exponential