What are the pros and cons of setting up a network as a WAN?

Corey set up his presentation for delivery to his team. the information he had to convey was critical to their job performance. he knew he would need a lot of time to explain each point

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given. b)the definition of max_cost should be removed since header files should not contain constants. c)the definition of book should be removed since header files should not contain class definitions. d)the body of the calculate_terms function should be added to the header file.

The qwerty keyboard is the most common layout of keys on a keyboard