How does a query analyzer work? What is PageRank algorithm and how does it work? What is “search engine optimization”? Who benefits from it? Describe the old and new ways of indexing performed by...

How does a query analyzer work? What is PageRank algorithm and how does it work? What is “search engine optimization”? Who benefits from it? Describe the old and new ways of indexing performed by search engines. What are the things that help Web pages rank higher in the search engine results?