Question

1)State the two distinguishing characteristics of different search engines.
2)what is advantage of metasearch engine?
3)Name any two popular web sites which provide e mail service.
Ans only this thee question fasttt...Ans the all que if possible plzz fast..

Answer 1

Different types of search engines
1. Crawler-based search engines.
2. Human-powered directories.
3. Meta-search engines.


Meta-search engines, such as Dogpile, Mamma, and Metacrawler, transmit user-supplied keywords simultaneously to several individual search engines to actually carry out the search. Search results returned from all the search engines can be integrated, duplicates can be eliminated and additional features such as clustering by subjects within the search results can be implemented by meta-search engines.

Meta-search engines are good for saving time by searching only in one place and sparing the need to use and learn several separate search engines. "But since meta-search engines do not allow for input of many search variables, their best use is to find hits on obscure items or to see if something can be found using the Internet.

godaddy.com
bigrock.com

Answer 2

Explanation:

1)crawler based engine, 2) human powered directory,3) Meta search engine