Question

Which describes the first step a crawler-based search engine uses to find information?

Answer 1

Answer: Text and keywords are selected and recorded in huge data centers.

Answer 2

Crawler-based search engines are what most of us are familiar with - mainly because that's what Google and Bing are. These companies develop their own software that enables them to build and maintain searchable databases of web pages (the engine), and to organise those pages into the most valuable and pertinent way to the user.