Sybex - CCNA 2.0 Study Guide (640-507).pdf - Cifo

692 Glossary
NetBEUI NetBIOS Extended User Interface: An improved version of the
NetBIOS protocol used in a number of network operating systems including
LAN Manager, Windows NT, LAN Server, and Windows for Workgroups,
implementing the OSI LLC2 protocol. NetBEUI formalizes the transport
frame not standardized in NetBIOS and adds more functions. See also: OSI.
NetBIOS Network Basic Input/Output System: The API employed by
applications residing on an IBM LAN to ask for services, such as session termination
or information transfer, from lower-level network processes.
NetView A mainframe network product from IBM, used for monitoring
SNA (Systems Network Architecture) networks. It runs as a VTAM (Virtual
Telecommunications Access Method) application.
NetWare A widely used NOS created by Novell, providing a number of
distributed network services and remote file access.
network address Used with the logical network addresses to identify the
network segment in an internetwork. Logical addresses are hierarchical in
nature and have at least two parts: network and host. An example of a hierarchical
address is 172.16.10.5, where 172.16 is the network and 10.5 is the
host address.
Network layer In the OSI reference model, it is Layer 3—the layer in
which routing is implemented, enabling connections and path selection
between two end systems. See also: Application layer, Data Link layer, Physical
layer, Presentation layer, Session layer, and Transport layer.
NFS Network File System: One of the protocols in Sun Microsystems’
widely used file system protocol suite, allowing remote file access across a
network. The name is loosely used to refer to the entire Sun protocol suite,
which also includes RPC, XDR (External Data Representation), and other
protocols.
NHRP Next Hop Resolution Protocol: In a nonbroadcast multiaccess
(NBMA) network, the protocol employed by routers in order to dynamically
locate MAC addresses of various hosts and routers. It enables systems to
communicate directly without requiring an intermediate hop, thus facilitating
increased performance in ATM, Frame Relay, X.25, and SMDS
systems.