Data! Data is usually on servers, so if you're asking what physical component, it would be servers.
DNS
Wiring
--> Performance degradation --> security issues --> host identification
Performance
"Managed network services provide similar services as in-house IT services. They manage online servers, fix IT problems, do design work, and performance monitoring."
Netstat is a command-line tool that displays network connections and a number of network interface and network protocol statistics. It is used to find problems on networks and determine how traffic effects performance.
A client requests services across a network.
processing delay
Protocol
Network Interface Card (NIC)
The purpose of network performance monitoring is to allow network administrators to create the best operating condition by reporting on the network activity and locating where the network is not operating to it's full potential. Network Performance Monitoring can find faulty routers and switches as well as identifying networks that are hogging the bandwidth.
Monitoring is the process of checking the computers, systems, and services that comprise a network. This examination allows a network administrator to maintain a robust network and even to improve upon the network. Orion Network Performance Monitoring makes it easy to quickly detect, diagnose, and resolve performance issues with your dynamic network. It delivers real-time views and dashboards that enable you to visually track network performance at a glance.
Network criteria ia a standard of factors that affects the network performance.