Here I will demo you how to install Apache httpd 2.4 through RPM on CentOS 6. The Software Collections (SCL) repository comes handy, install centos-release-scl repo package available in CentOS repository:
# yum install centos-release-scl
Install the httpd 2.4:
# yum install httpd24 # service httpd24-httpd star # httpd -h
Here is RPM list for Apache httpd 2.4 –