Ethernet uses ____ to prevent data packets from colliding on the network.

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Indicate whether the statement is true or false

Given the following stack declaration, which of the following function definitions would correctly implement the destructor?

struct StackFrame { char data; StackFrame *link; }; typedef StackFrame* StackFramePtr; class Stack { public: Stack( ); Stack(const Stack& a_stack); ~Stack( ); void push(char the_symbol); char pop( ); bool empty( ) const; private: StackFramePtr top; }; a. top=NULL; b. char next; while (! empty( )) next = pop( );//pop calls delete. c. char next; while(!empty( )) next = push(); d. none of the above