Linux doesn't use an archive bit in each file like Windows uses to designate a file has been modified since last backup, so how can the backup program efficiently and perfectly determine if a file needs to be archived/saved when running each incremental dump

1. which of the following is a search engine? a) mozilla firefox b)internet explorer c)google d)safari 2. which of the following statements is true? a) all search engines will provide the same results when you enter the same query. b) all search engines use the same amount of advertisements. c) some search engines are also browsers. d) search engines often provide different results, even when you enter the same query.