Sharepoint integration with Exchange and Active Directory

Dear All,

My active directory is on windows server 2003 and now planning to install SharePoint 2013. I have windows server 2012 with seperate hardware and want to install Sharepoint on this server. I have some queries relates on the Sharepoint deployment.

• Sharepoint 2013 is integrated with windows server 2003 Active Directory or need to upgrade with 2008 or R2 Active Directory?
• Sharepoint 2013 integrates with Exchange server 2007 and 2010 or requried Exchange 2013 ?
• Is there any specific edition of windows server and exchange server requirement e.g. (Standard/Enterprise) for SharePoint 2013 ?

Kindly reply at your earliest to assist me on queries.

Thanks