Network Criteria

* NETWORKS:-A network is a combination of hardware and software that sends data from one location
to another. The hardware consists of the physical equipment that carries signals from
one point of the network to another. The software consists of instruction sets that make
possible the services that we expect from a network.
A network is a set of devices ( nodes) connected by communication
links. A node can be a computer, printer, or any other device capable of sending and/or
receiving data generated by other nodes on the network.

*Network Criteria:-A network must he able to meet a certain number of criteria. The most important of
these are performance, reliability, and security.---
1)Performance:-Performance can be measured in many ways, including transit time and response time.
Transit time is the amount of time required for a message to travel from one device to another.
2.)Reliability:-network reliability is measured by the frequency of
failure, the time it takes a link to recover fron a failure, and the networks robustness in
a catastrophe.
3.)Security:-Network security issues include protecting data from unauthorized access. protecting
dat,a from damage.