Google Software Development Engineer interview questions

Sent a mail to Google recruiter who was prompt to call me. After initial screening, she setup a phone screen with someone in engineering team. At the last moment, the person who was supposed to interview was not available and someone else called me. Questions were fairly straight forward. What happens when you type www.google.com in your browser? What are the things part of HTTP request? How are headers and body seperated in a HTTP request? Given a URL which has url-encoded name-values and a variable, return the value for it. Now modify the function to handle when the name appears multiple times.