Motorola SVG2500 manual Nic, Osi

17 GLOSSARY
TERM	DEFINITION
	with the correct network address data, selects routes, and
	recognizes and forwards to the transport layer incoming
	messages for local host domains.
NIC	A network interface card converts computer data to serial
	data in a packet format that it sends over the LAN. A NIC is
	installed in an expansion slot or can be built-in. Every Ethernet NIC
	has a MAC address permanently saved in its ROM.
node	On a LAN, a generic term for any network device.
	On an HFC network, the interface between the fiber-optic trunk
	and coaxial cable feeders to subscriber locations. A node is
	typically located in the subscriber’s neighborhood.
noise	Random spurts of electrical energy or interface. May produce a
	salt-and-pepper pattern on a television picture.

O

TERM	DEFINITION
ohm	A unit of electrical resistance.
OSI	The Open Systems Interconnection reference model is an
	illustrative model describing how data moves through a
	network from an application on the source host to an
	application on the destination host. It is a conceptual framework
	developed by ISO that is now the primary model for
	intercomputer communications. OSI is a model only; it does
	not define a specific networking interface.

P

TERM	DEFINITION
packet	The unit of data that is routed between the sender and
	destination on the Internet or other packet-switched network.
	When data, such as an e-mail message, is sent over the Internet,
	the sender’s IP divides the data into uniquely-numbered packets.
	The packet header contains the source and destination IP
	addresses. The individual packets may travel different routes.
	When all packets arrive at the destination, IP at that end
	reassembles the packets.

packet- switched

PacketCable

A scheme to handle transmissions on a connectionless network such as the Internet. An alternative is circuit-switched.

A CableLabs-led project to define a common platform to deliver advanced, real-time multimedia services over two-way HFC

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