In what deployment scenarios would it be desirable to enable peer-to-peer traffic blocking?

A.
In home networks in which file and pointer sharing is enabled

B.
In corporate VoWiFi is networks with push to talk multicast capabilities

C.
At public hotspots in which many clients use diverse application

D.
In university environment with multicast training

Explanation:
Inclusion of Peer-to-Peer (P2P) traffic filter to prevent hotspot abuse http://news.chillifire.net/

Public Secure Packet Forwarding (PSPF)is a feature that can be enabled on WLAN access points or controllers to block wireless clients from communicating with other wireless clients on the same wireless VLAN. This isolates each user on the wireless network to ensure that an 802.11 station cannot be used to gain Layer 2 or Layer 3 access to another 802.11 station.Although PSPF is a proprietary term most commonly used by Cisco, other vendors
offer similar capabilities under different names such aspeer blocking