How to install Apache Http server in CentOS 7

Install apache packge
# yum install httpd

Start Apache service
# systemctl start httpd.service

Permanently on service
# systemctl enable httpd.service

Check status of service
# systemctl status httpd.service
 
Access Apache with your server ip address
You can also access web server page from Command line for testing purpose
# yum install links
# links 192.168.35.150
or, 
# curl 192.168.35.15