The smallest building block of a wireless LAN is a __________ which consists of wireless stations executing the same MAC protocol and competing for access to the same shared wireless medium.

________-generation computers used vacuum tubes

Fill in the blank(s) with correct word

Which one of the following would correctly complete the class definition above?

``` Class Matrix { public: Matrix() {} private: int rows; int cols; // Completion goes here } ``` a. int mat[][]; b. int mat[rows][cols]; c. int mat[][cols]; d. int mat[6][6];