Glossary Section "N" ( Definitions )
namespace A commonly distributed set of names in which all names are unique.
NANOG North American Network Operator's Group. The primary forum for information exchange among U.S. exchange point participants, Internet Service Providers, and end users. NANOG meetings offer updates on federal and industry network initiatives, network routing and operations, Internet growth and performance, registry and allocation issues, and emerging technologies and protocols.
NEBS Network Equipment Building Standard was designed by the TELCO community to handle a number of problems associated with housing very expensive and delicate equipment. The NEBS specifications address many CO hazards from electrical shielding to powering to acts of God such as earthquakes and fires.
NFV Network Functions Virtualization uses software on generic servers for services like firewalls and router capability.
NERC North American Electric Reliability Corporation is the electric reliability organization (ERO) certified by the Federal Energy Regulatory Commission ( FERC ) to establish and enforce reliability standards for the bulk power system. More information on NERC is available from their website at: http://www.nerc.com/Pages/default.aspx
NBP Name Binding Protocol The AppleTalk transport-level protocol that translates a character string name into the internet address of the corresponding socket client; NBP enables AppleTalk protocols to understand user-defined zones and device names by providing and maintaining translation tables that map these names to corresponding socket addresses.
netmask A 32-bit bit mask which shows how an Internet address is to be divided into network, subnet, and host parts. The netmask has ones in the bit positions in the 32-bit address which are to be used for the network and subnet parts, and zeros for the host part. The mask should contain at least the standard network portion (as determined by the addresss class), and the subnet field should be contiguous with the network portion.
network address The network portion of an IP address. For a class A network, the network address is the first byte of the IP address. For a class B network, the network address is the first two bytes of the IP address. For a class C network, the network address is the first three bytes of the IP address. In each case, the remainder is the host address. In the Internet, assigned network addresses are globally unique.
network byte order The Internet-standard ordering of the bytes corresponding to numeric values.
NFC - Near Field Communication
NFS Network File System. A protocol developed by Sun Microsystems, and defined in RFC 1094 (RFC 1813 defines Version 3), which allows a set of computer system to cooperatively access each other's files in a transparent manner.
NFV Network Functions Virtualization makes use of software on generic servers to provide services like that of a router, firewall, etc.
NI-1 National ISDN-1
NIC Network information
Center. Originally created to serve ARPANET, there are now many NICs providing user
assistance and more.
NID Network Interface Device is device that serves demarcation point between the carrier's local loop and the customer's premises.
NIST National Institute of Standards and Technology. (Formerly NBS).
NMS Network Management Station. The system responsible for managing a (portion of a) network. The NMS talks to network management agents, which reside in the managed nodes, via a network management protocol.
non-ISDN trunk Any trunk not served by either SS7 or D-Channel signaling.
NREN National Research and Educational Network. This network is still on the "drawing board." It is expected to become a state of the art high-speed network for research and education in the US. In recent years the NREN has become synonymous with the National Information Infrastructure, often referred to as the Information Superhighway.
NSF National Science Foundation.
NSFNET National Science Foundation NETwork. A collection of local, regional, and mid-level networks in the U.S. tied together by a high-speed backbone. NSFNET provides scientists access to a number of supercomputers across the country.
NTE Network Termination Equipment
NTU Networks Termination Unit
NTP Network Time Protocol. A protocol built on top of TCP that assures accurate local time-keeping with reference to radio and atomic clocks located on the Internet. This protocol is capable of synchronizing distributed clocks within milliseconds.