What: Chief marketing and communications officer-worldwide

government affairs Where: Cisco Systems, San Jose, Calif. Why: Christie, who has been in her position since January 2011, is responsible for Cisco’s global marketing, corporate communications and government affairs programs. She oversees the “Welcome to the Human Network” campaign and is an executive sponsor of Cisco’s Communication and Collaboration Board, a cross-functions team driving deployment of Web 2.0 and social networking technologies throughout the company.