Why we need two servers (httpd and tomcat)

Hello Group, Can someone explain to me the basic difference between httpd and tomacat serer. What one can do so the other can not do. And why do we need these two servers in the first place. I will appreciate this. -- Thanks Nagrik

Beginner: Installation Apache

Dear Group, I downloaded bianries fo Apache for my Windows platform on XP operating system. I did not come across a statement that Apache runs on XP. The site says that it runs on Vista. Can somebody please tell me if it runs on Windows XP. Secondly, when I was installing it, the message says

default page absent if tomcat started from eclipse

Hello Group, If I start tomcat 6.0 from my eclipse IDE, then I am not able to see the default page for tomcat server, which sits at http://localhost:8080. In this case both browsers IE and Firefox give 404 status errors. However if I start the server independently then I am able to see the

http://localhost:8080 does not display default page.

Hello Group, I installed my tomcat 6.0 last week. And first time I was able to see the default page at http://localhost:8080, which sits at $CATALINA_HOME/webapps/ROOT/index.html all right on Firefox browser and not on IE. But today I am not able to see the page on any of the browser. During

Can not see the default page of tomcat

Hello Group, I installed my tomcat 6.0 last week. And first time I was able to see the default page, which sits at $CATALINA_HOME/webapps/ROOT/index.html all right on Firefox browser and not on IE. But today I am not able to see the page on any of the browser. During this period I did change