ABC Company has 1500 managed devices and 15，000 end users on a campus network. LANManagement Solution （LMS） is being deployed as the network management application. What is the recommended number of network management server（s）？（）

A. full mesh
B. peer-to-peer
C. partial mesh
D. hub and spoke

A. IGRP
B. RIP
C. RIPv2
D. OSPF

A. passively listens to network traffic
B. is an active device in the traffic path
C. has a permissive interface that is used to monitor networks
D. traffic arrives on one IPS interface and exits on another