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Name resolution

The process of mapping a name to its corresponding address.

Namespace

A name or group of names defined according to a naming convention; any bounded area in which a given name can be resolved. Active Directory is primarily a namespace, as is any directory service. The Internet uses a hierarchical namespace that partitions names into categories known as top-level domains, such as .com, .edu, and .gov.

NetBIOS Enhanced User Interface (NetBEUI)

A small and fast protocol that requires little memory but can be routed only by using token ring routing. Remote locations linked by routers can’t use NetBEUI to communicate.

Net Logon service

A service that accepts logon requests from any client and provides authentication from the Security Accounts Manager (SAM) database of accounts.

Network

Two or more computers connected for the purpose of sharing resources.

Network Access Server (NAS)

A server that accepts Point-to-Point Protocol connections and places them on the network served by NAS.

Network Address Translation (NAT)

Enables a local-area network (LAN) to use one set of IP addresses for internal traffic and a second set of addresses for external traffic.

Network News Transfer Protocol (NNTP)

A protocol defined for distribution, inquiry, retrieval, and posting of news articles on the Internet.

Newsgroup

On the Internet, a distributed bulletin board system about a particular topic. USENET News (also known as Netnews) is a system that distributes thousands of newsgroups to all parts of the Internet.

Node

A location in a tree structure with links to one or more items below it. On a LAN, a device that can communicate with other devices on the network. In clustering, a computer that is a member of a cluster.

NTFS file system

The native file system for Windows Server 2003, Windows 2000, and Windows NT. Supports long filenames, a variety of permissions for sharing files, and a transaction log that allows the completion of any incomplete file-related tasks if the operating system is interrupted.

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