Which two user portion format conditions are true for directory URI on Cisco Unified
Communications Manager 9.1 or later? (Choose two.)

A.
It supports the $ character.

B.
It support space between characters.

C.
It has a maximum length of 50 characters.

D.
It has a maximum length of 254 characters.

E.
It is always case-sensitive.

F.
It cannot be a directory number.

Explanation:
Cisco Unified Communications Manager supports the following formats in the user portion of a
directory URI (the portion before the @ symbol):
Accepted characters are a-z, A-Z, 0-9, !, $, %, &, *, _, +, ~, -, =, \, ?, \, ‘, ,, ., /.
The user portion has a maximum length of 47 characters.
The user portion accepts percent encoding from %2[0-9A-F] through %7[0-9A-F]. For some accepted
characters, Unified CM automatically applies percent encoding. See below for more information on
percent encoding.
The user portion is case-sensitive or case-insensitive depending on the value of the URI Lookup
Policy enterprise parameter. The default value is case-sensitive.

http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/bat/9_1_1/CUCM_BK_C271A69D_00
_cucm-bulk-administration-guide-91/CUCM_BK_C271A69D_00_cucm-bulk-administration-guide-
91_chapter_01001110.html