Which Cisco Unified Communications Manager partition will be associated with a directory URI that is configured for an end user with a primary extension? 

Answer options:

A. null
B. none
C. directory URI
D. default
E. any partition that the Cisco Unified Communications Manager administrator desires

C

Cisco Unified Communications Manager supports dialing using directory URIs for call addressing. Directory URIs look like email addresses and follow the username@host format where the host portion is an IPv4 address or a fully qualified domain name. A directory URI is a uniform resource identifier, a string of characters that can be used to identify a directory number. If that directory number is assigned to a phone, Cisco Unified Communications Manager can route calls to that phone using the directory URI. URI dialing is available for SIP and SCCP endpoints that support directory URIs.