Although google processes a trillion web pages, apparently their content index only catalogs around 40 billion pages -- since the majority of urls contain redundant information. (i.e. a DNS or web hosting company might "park" millions of domain names, and return a generic advertisment page for billions of urls)
Although google processes a trillion web pages, apparently their content index only catalogs around 40 billion pages -- since the majority of urls contain redundant information. (i.e. a DNS or web hosting company might "park" millions of domain names, and return a generic advertisment page for billions of urls)