If you ever need to verify your Apache version, all you have to do is to log in to your server using ssh then use one of the following protocol.
# httpd -V
/var/www/vhosts/example.com/httpdocs$ httpd -V
Server version: Apache/2.2.15 (Unix)
Server built: May 13 2013 22:11:16
Server’s Module Magic Number: 20051115:25
Server loaded: APR 1.3.9, APR-Util 1.3.9
Compiled using: APR 1.3.9, APR-Util 1.3.9
Server MPM: Prefork
forked: yes (variable process count)
Server compiled with….
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)