1. Go to the Internet and look up www.walmart.com. How has this firm been able to combine overall cost leadership and differentiation strategies? 2. Choose a firm with which you are familiar in your local business community. Is the firm successful in following one (or more) generic strategies? Why or why not? What do you think are some of the challenges it faces in implementing these strategies in an effective manner? 3. Think of a firm that has attained a differentiation focus or cost focus strategy. Are their advantages sustainable? Why? Why not? (Hint: Consider its position vis--vis Porter's five forces.) 4. Think of a firm that successfully achieved a combination overall cost leadership and differentiation strategy. What can be learned from this example? Are these advantages sustainable? Why? Why not? (Hint: Consider its competitive position vis--vis Porter's five forces.)