Your company has a private cloud that is managed by using a System Center 2012 Operations Manager infrastructure.

The network contains two network segments that are separated by a firewall.

You have a management server named Server1.

You create a discovery rule and configure the rule to discover SNMP devices.

You discover that only the devices on the network segment that contains Server1 are discovered.

You need to ensure that the devices supporting SNMP on both network segments are discovered.

Which firewall port or ports should you allow on the firewall?

A.
UDP 161

B.
TCP 161 and UPD 22

C.
UDP 5723 and UDP 5724

D.
TCP 162

Explanation:
SNMP uses the default UDP port 161 for general SNMP messages and UDP port 162 for SNMP trap messages.

http://technet.microsoft.com/en-us/library/cc959643.aspx