SECTION E: To sift through the massive amounts of information available on the Web and locate pertinent information about a topic, Web surfers utilize programs called search $-$ These special programs have four major components. A Web also called a Web spider, is automated to methodically visit Web sites and gather Web pages. A search engine culls keywords from the gathered pages and stores them in $a(n)$ The search engine's query

words called search $,$ looks them up in the database, and produces a list of relevant Web sites. There are a number of ways to narrow searches and produce more targeted results, such as using operators or putting exact phrases in The order in which Web sites are returned in response to your query is dependent on relevancy criteria, such as keyword matches and popularity.