Part A $(10$ Points$)$

Briefly define Michael Porter's two major generic strategies mentioned extensively in the text.

How do the two major generic strategies achieve competitive advantage?

Part B $(10$ Points$)$

Employ Porter's three generic strategies to describe the competitive strategy at JetBlue, both before the purchase of the E$190$ aircraft and afterwards. In what major ways did the competitive strategy change, and how do you characterize the strategy at the end of the case?