2. Research, find and use a better (different from the simple Shift Cipher) encryption technique to encrypt a string of your choice. You can use an internet solver to encrypt your string as well. List your original, text string and the encrypted version of it. Briefly describe why this encryption technique is better than the simple shift cipher you used in question 1. What makes the encryption stronger or harder to crack? Briefly describe how your chosen encryption technique work?

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

Consider the following code snippet: #ifndef cashregister_h#define cashregister_hconst double max_balance = 6000000.0; class cashregister{public: cashregister(); cashregister(double new_balance); void set_balance(double new_balance); double get_balance() const; private: double balance[12]; }; double get_monthly_balance(cashregister bk, int month); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_balance should be removed since header files should not contain constants.c)the definition of cashregister should be removed since header files should not contain class definitions.d)the body of the get_monthly_balance function should be added to the header file.

Least square fit to polynomial write a function leastsquarefit3pol that solves a linear system of equations to find a least squares fit of a third order polynomial to an experimental data set given as two row arrays. the function leastsquarefit3pol must explicitly solve a set of linear equations and cannot use polyfit. there should be no restriction on the size of the problem that can be solved.