You can find the server information about your server such as MySQL and PHP version or how many domains your are allowed on the cPanel account by viewing your cPanel stats.
Steps to view your server specifications
Login into your cPanel.
 Expand the cPanel StatsOn the left hand side, click the “expand stats” link to expand all of your cPanel specifications.
 Note! The cPanel stats are only for a cPanel account. Total server statistics are different.
If you have root login details or shell access use the following commands
root@server [~]# /usr/local/apache/bin/httpd -v
 Server version: Apache/2.4.10 (Unix)
 Server built:   Jan 27 2015 01:34:49
 Cpanel::Easy::Apache v3.28.2 rev9999
or
root@server [~]# httpd -v
 Server version: Apache/2.4.10 (Unix)
 Server built:   Jan 27 2015 01:34:49
 Cpanel::Easy::Apache v3.28.2 rev9999
That should allow you to check the installed version of apache on your server
All servers are deployed with yum and any vendor supplied package may be added to your system by typing:
yum install packagename
where packagename is the name of the package you would like to install.
The Linux rpm command can be used to list the packages that exist on your Linux dedicated server. Its syntax is the following:
rpm -qa –queryformat “%{GROUP} %{NAME}-%{VERSION}\n” | sort
CentOS 5
 Operating System	   	Linux CentOS 5.8
 OS Kernel		Linux kernel 2.6
 Remote Access Services		OpenSSH 4.3p2
 Email Services		Sendmail 8.13.8
 Development Languages/Environments		GCC (C, C++, Objc, GCJ) 4.11
 Perl 5.8.8
 PHP 5.1.6
 Database and Directory Services		MySQL 5.0.22
 DNS Services		BIND 9.3.3
 Web Servers and Components		Apache 2.0
 Mod_ssl 2.2.3
 Mod_perl 2.0.2cmd
 Mod_python 3.1
CentOS 6
 Operating System	   	Linux CentOS 6
 OS Kernel		Linux kernel 2.6.32
 Remote Access Services		OpenSSH 5.3p1
 Email Services		Sendmail 8.14.4
 Development Languages/Environments		GCC 4.4.6
 Perl 5.10.1
 PHP 5.3.3
 Database and Directory Services		MySQL 5.1.61
 DNS Services		BIND 9.7.3
 Web Servers and Components		Apache 2.2.15
 Mod_ssl 2.2.15
 Mod_perl 2.0.4
 Mod_python not installed (3.3.1 available from EPEL)