McNemarâs Test is a matched pair test used to determine whether there is a significant change in nominal data before and after an event. We begin with an example. Example 1: In the BBC program The Doha Debates 100 people were surveyed regarding their opinion about capital punishment. 30 were in favor and 70 against.
Name server A name server is a computer server that hosts a network service for providing responses to queries against a directory service. It maps a human-recognizable identifier to a system-internal, often numeric identification or addressing component.
The counterpart to a server is a client. Any computer which is accessing the server is said to be that servers client. Many servers are designed to handle very large numbers of clients, these servers must be very powerful and must have a very fast connection to their network in order to be able to do this reliably. The word server can also refer to a specific application, one which serves data or services to other applications.