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nslookup operates in interactive or non-interactive mode. When used interactively by invoking it without arguments or when the first argument is - (minus sign) and the second argument is a hostname or Internet address of a name server, the user issues parameter configurations or requests when presented with the nslookup prompt (>).
In computer systems, name resolution refers to the retrieval of the underlying numeric values corresponding to computer hostnames, account user names, group names, and other named entities. Computer operating systems commonly employ multiple key/value lists that associate easily remembered names with integer numbers used to identify users ...
The Name Service Switch (NSS) is an interface of glibc that connects a computer with a variety of sources of common configuration databases and name resolution mechanisms. [1] These sources include local operating system files (such as /etc/passwd , /etc/group , and /etc/hosts ), the Domain Name System (DNS), the Network Information Service ...
The computer file hosts is an operating system file that maps hostnames to IP addresses.It is a plain text file. Originally a file named HOSTS.TXT was manually maintained and made available via file sharing by Stanford Research Institute for the ARPANET membership, containing the hostnames and address of hosts as contributed for inclusion by member organizations.
It makes it more convenient to refer to a machine by name than by its IP address. Network naming can be hierarchical in nature, such as the Internet's Domain Name System. Indeed, the Internet employs several universally applicable naming methods: uniform resource name (URN), uniform resource locator (URL), and uniform resource identifier (URI).
The Network Information Service, or NIS (originally called Yellow Pages or YP), is a client–server directory service protocol for distributing system configuration data such as user and host names between computers on a computer network. Sun Microsystems developed the NIS; the technology is licensed to virtually all other Unix vendors.
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An authoritative-only name server returns answers only to queries about domain names for which it is responsible (as specifically configured by its administrator). An authoritative name server can either be a primary server or a secondary server. A primary server for a zone is the server that stores the definitive versions of all records in ...