3Com 3C10402B, Руководство администратора

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LOSSARY
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network ping A packet transfer that checks logical continuity between a PC and a
specified IP address.
NIC Network Interface Card. Controller circuitry that connects a node to a
network, usually in the form of a card in a PC expansion slot. In
conjunction with the NOS (Network Operating System) and PC operating
system, it helps transmit and receive messages on the network.
node Device on a network that demands or supplies services. Also, a location
where transmission paths are connected.
NOS Network Operating System. Software that connects all the devices on a
network so that resources can be shared efficiently and managed from a
central location. Novell NetWare is one example of a network operating
system.
O
OEM Original Equipment Manufacturer. The maker of a product or component
that is marketed by another vendor, integrator, VAR (Value Added
Reseller), or reseller.
off-hook The state of a telephone line that allows dialing and transmission but
prohibits incoming calls from being answered. The term stems from the
days when a telephone handset was lifted off of a hook. Contrast with
on-hook.
off-site notification A feature that sends a message to a pager, outside telephone number, or
e-mail account that informs a user of a voice mail message. The user can
retrieve the messages remotely.
on-hook The state of a telephone line that can receive an incoming call.
OSI model A conceptual model of hardware and software layers that define when,
how, and in what order data can be transmitted on a network. The OSI
Model defines seven layers:
Layer 7 Application layer
Layer 6 Presentation layer
Layer 5 Session layer
Layer 4 Transport layer
Layer 3 Network layer
Layer 2 Data Link layer