Which is a software feature available in Cisco IOS Software recommended to be positioned at the
network access layer?

A.
Flow Metadata

B.
Media Services Proxy

C.
NBAR2

D.
Mediatrace

Explanation:

Media Services Proxy (MSP) uses a variety of standard signaling protocols (Session Description
Protocol [SDP], Session Initiation Protocol [SIP], H.323, H.245, Real Time Streaming Protocol
[RTSP], multicast DNS [mDNS], etc.) to learn about the characteristics of endpoints and
applications from legacy systems, allowing sharing of flow attributes among network nodes and
allowing existing endpoints and applications to be augmented by the Cisco intelligent network
while the transition to “smart” endpoints is in progress.
MSP is a software feature available in Cisco IOS Software recommended to be positioned at the
network access layer. When endpoints establish audio and video calls, the MSP identifies
theendpoint attributes by sniffing the signaling and associating these attributes with the endpoint. It
then provides services on behalf of the endpoint; for instance, generation of metadata, that can be
used by downstream network nodes.
Reference: http://www.cisco.com/c/en/us/solutions/collateral/enterprise/enterprisemedianet/solution_overview_c22-654289.html