When a user types a search like "U.S. presidents", which best describes how a search engine finds matching web pages?

Question

Question 39 options:

The engine goes to every website on the web, and looks for matching pages.

The engine goes to a random sampling of websites on the web, and looks for matching pages

The engine looks for pages pre-determined by humans to match the search words

The engine examines an index (automatically pre-built) that relates words to web pages

Answer 1

The best description of how a search engine finds matching web pages when a user types a search like "U.S. presidents" is:

The engine examines an index (automatically pre-built) that relates words to web pages.

Search engines create and maintain an index that organizes and stores information about web pages, allowing them to quickly retrieve relevant results based on search queries.