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.
Name servers can also be configured to give authoritative answers to queries in some zones, while acting as a caching name server for all other zones. An authoritative name server can either be a primary server (master) or a secondary server (slave). A primary server for a zone is the server that stores the definitive versions of all records in that zone.