Which two of these are characteristics of a Cisco Unified Communications Manager software
conference resource? (Choose two.)

A.
The number of participants is based on the number of DSP resources available.

B.
If Cisco Unified Communications Manager is co-resident on the same server, the maximum
number of audio streams per server is 128

C.
It supports any combination of codec types.

D.
Any combination of G.711 mu-law, G.711 a-law, or wideband audio streams may be connected.

E.
It supports only unicast audio streams.

F.
It supports both unicast and multicast audio streams.

Explanation:
Explanation : The number of maximum audio stream per server is always 128. Software
conference devices support G.711 codecs by default , Software conference is not depends on
DSP resources.
Link: http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/8_5_1/ccmsys/a05confb.html
Cisco Unified Communications Manager System Guide Release 8.5(1), page-300.