How we can install Apache web server on Redhat linux?
Ans : The simplest way to install Apache on redhat machine is to use yum command. 

Follow below steps : 
To install and check if the web server is running with default test page.

Step1: Check if the package is installed or not

#rpm -qa | grep httpd

Step2 : Install the package if you did not get any output

#yum install httpd

Step3 : Now start the apache service

#service httpd restart

Step4 : On the service at booting time

#chkconfig httpd on

Step5 : Check if the web server is running or not by accessing local host

#elinks localhost


Access localhost from browser

When you access the server through browser red-hat Linux will present you with a test page as shown below