Which of these is least important when determining how many users a NAS can support?
A.
bandwidth
B.
number of plug-ins per scan
C.
total number of network devices
D.
number of checks in each posture assessment
Explanation:
NAS = Cisco NAC Appliance Server (not Network-Attached Storage as I first thought)
Network Admission Control (NAC) refers to Cisco’s version of Network Access Control, which restricts access to the network based on identity or security
posture. When a network device (switch, router, wireless access point, DHCP server, etc.) is configured for NAC, it can force user or machine authentication prior to
granting access to the network.
https://www.safaribooksonline.com/library/view/foundation-learning- guide/9780132652933/ch08.html
https://en.wikipedia.org/wiki/Network_Admission_Control
Cisco NAS Scaling:
There are three levels of Cisco NAM for supporting Cisco NAC Appliance solutions:
• Cisco NAC Appliance Lite Manager manages up to 3 Cisco NAS devices, supporting 100, 250, or 500 users per server.
• Cisco NAC Appliance Standard Manager manages up to 20 Cisco NAS devices, supporting from 1500 to 5000 users per (NAS) depending on which model is
deployed.
• Cisco NAC Appliance Super Manager manages up to 40 Cisco NAS devices, supporting from 1500 to 5000 users per (NAS) depending on which model is
deployed.
The number of users supported on a server is a measure of concurrent users that have been scanned for posture compliance, not network devices such as printers
or IP phones.
The number of users supported per server is influenced by many factors that consume CPU and server resources, such as the following:
• The number of new user authentications per second
• The number of posture assessments per second
• How many checks are in each posture assessment
• The number of agentless network scans per second
• The number of plug-ins per scan
• Rescan timer intervals
• Per-role and total online timer intervals
• Bandwidth controls
• Filters and access controls
Note: Interface bandwidth is the least important calculation for determining how many users a Cisco NAS can support.