NetTool
Users Manual
C-6
Full-Duplex
10Base-T and 100Base-TX network operation using a
switching Hub to establish a point-to-point connection
between LAN nodes that allows simultaneous sending
and receiving of data packets. Full-duplex performance is
twice that of half-duplex performance. A 10Base-T full-
duplex network is capable of 20 Mb/s data throughput,
while a full-duplex 100Base-TX network is capable of 200
Mb/s throughput.
Half-Duplex
Network operation is one direction at a time only; either
sending or receiving data packets, but not both at the
same time.
Hops
Most commonly defined as the number of routers traveled
by a frame to reach its destination.
Hub (Repeater)
Today, most often referred to in 10BASE-T networks. A
10BASE-T Hub is essentially a multiport repeater Hub
with each segment dedicated to a single 10BASE-T
connection.
ICMP (Internet Control and Message Protocol)
A communication protocol used by every device that uses
IP. ICMP reports errors that occur during the delivery of
packets on the network.
IP (Internet Protocol)
IP is the network layer protocol for the TCP/IP suite.
IP Address
An IP address is a series of four numbers separated by
dots (“.”), each of which is between 0 and 255. An IP
address must be unique to a machine or the network will
not be able to properly deliver network information to that
machine. The address is made up of a network number,
a subnet number, and a node number.
IP Network Number
The network number consists of the first two numbers of
a device IP address on a network.
IPX (Internetwork Packet Exchange)
IPX is the network layer protocol for Novell’s NetWare
protocol suite.
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