N


name server

A server that contains a databases of name resolution information used to resolve network names to network addresses.



NAT (Network Address Translation)

A standard that enables the translation of IP addresses used on one network to a different IP address that is acceptable for use on another network. This translation enables multiple systems to access an external network, such as the Internet, through a single IP address.



NBNS (NetBIOS name server)

A central server that provides name resolution for NetBIOS names to IP addresses. Commonly referred to as a WINS server.



nbtstat

A Windows operating system command-line utility that displays protocol statistics and current TCP/IP connections using NetBIOS over TCP/IP (NBT).



NCP (NetWare Core Protocol)

A protocol that provides a method for hosts to make calls to a NetWare server for services and network resources. NCP is part of the IPX/SPX protocol suite.



NDS (Novell Directory Services)

A standards-compliant directory services system introduced by Novell with NetWare 4.x. Subsequently renamed eDirectory.



NetBEUI (NetBIOS Extended User Interface)

A nonroutable, Microsoft-proprietary networking protocol designed for use in small networks.



NetBIOS (Network Basic Input/Output System)

A software application that enables different applications to communicate between computers on a LAN.



netstat

A Windows operating system command-line utility that displays protocol statistics and current TCP/IP network connections.



NLM (NetWare loadable module)

A service or process that runs on a NetWare server.



NLSP (NetWare Link Services Protocol)

A link-state routing protocol used on networks that use Novell's IPX/SPX protocol suite.



network card

See [NIC]
network ID

The part of a TCP/IP address that specifies the network portion of the IP address. The network ID is determined by the class of the address, which in turn is determined by the subnet mask used.



network interface layer

The bottom layer of the TCP/IP architectural model, which is responsible for sending and receiving frames.



network layer

Layer 3 of the OSI model, which is where routing based on node addresses (that is, IP or IPX addresses) occurs.



network operating system (NOS)

An operating system that runs on the servers on a network. Network operating systems include NetWare, UNIX, Windows NT Server, and Windows Server 2003.



newsgroup

A discussion group that focuses on a specific topic and is made up of a collection of messages posted to an Internet site. Newsgroups are useful resources for support personnel.



NFS (Network File System)

File sharing and access protocol most commonly associated with UNIX and Linux systems.



NIC (Network Interface Card)

A hardware component that serves as the interface, or connecting component, between a network and the node. It has a transceiver, a MAC address, and a physical connector for the network cable. Also known as a network adapter or a network card.



NIS (Network Information Services)

The user, group, and security information database used in a UNIX internetwork.



NMS (Network Management System)

An application that acts as a central management point for network management. Most NMS systems use SNMP in order to communicate with network devices.



NNTP (Network News Transfer Protocol)

An Internet protocol that controls how news articles are to be queried, distributed, and posted. NNTP uses port 119.



noise

Another name for EMI.

See also [EMI]


NTP (Network Time Protocol)

A protocol that is used to communicate time synchronization information between devices on the network. NTP is part of the TCP/IP protocol suite. NTP uses port 123.





    Network+ Exam Cram 2
    Network+ Exam Cram 2
    ISBN: 078974905X
    EAN: N/A
    Year: 2003
    Pages: 194

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