Context: This process begins when the user inputs a Uniform Resource Locator (URL), for example http://en.wikipedia.org/, into the browser. The prefix of the URL, the Uniform Resource Identifier or URI, determines how the URL will be interpreted. The most commonly used kind of URI starts with http: and identifies a resource to be retrieved over the Hypertext Transfer Protocol (HTTP). Many browsers also support a variety of other prefixes, such as https: for HTTPS, ftp: for the File Transfer Protocol, and file: for local files. Prefixes that the web browser cannot directly handle are often handed off to another application entirely. For example, mailto: URIs are usually passed to the user's default e-mail application, and news: URIs are passed to the user's default newsgroup reader.

Question: What does URL stand for?
Answer: Uniform Resource Locator

Question: What is the determining factor in how a URL will be interpreted?
Answer: The prefix of the URL

Question: What does http stand for?
Answer: Hypertext Transfer Protocol

Question: What does ftp stand for?
Answer: File Transfer Protocol

Question: A news: prefix is given to the user's what?
Answer: default newsgroup reader

Question: What does the prefix of the default newsgroup reader determine?
Answer: Unanswerable

Question: What does the most common form of local file start with?
Answer: Unanswerable

Question: What does a common browser identify?
Answer: Unanswerable

Question: What happens to newsgroup readers the web browser can't handle directly?
Answer: Unanswerable

Question: Where are ftp's passed on to?
Answer: Unanswerable