I am aware this thread is old- however, sharing for anyone else looking for this. CUCM has the functionality to fulfill basic DHCP server capability, however as per CCNA Collaboration CICD 210-060 Guide, it appears that it is intended to support only...

Service Update.  

You can refer to this post that has the same topic covered in some detail - https://community.cisco.com/t5/unified-communications-infrastructure/cucm-capf-certificate-question/td-p/4749655If you have a large environment or difficulties understanding ...