Answer:
The search engine works through three primary functions,
Crawling, Indexing and Ranking
Step-by-step explanation:
Crawling is the process in which the server works as a spiders and finds out information relevant for the user. Indexing is the way to store the web page. Ranking is the priority through which websites are displayed. The most matched text with the URLs are displayed first. The content in the website is matched with the relevance and then displayed to the user.