NIC
Network Interface Card. A card installed in a computer or built
onto the motherboard that allows the computer to connect to a
network.
NTP
Network Time Protocol. Used to synchronize the time of all the
computers in a network.
OFDM
Orthogonal Frequency-Division Multiplexing. Modulation
technique for both 802.11a and 802.11g.
OSI
Open Systems Interconnection. Reference model for how data
should travel between two devices on a network.
OSPF
Open Shortest Path First. A routing protocol that is used more
than RIP in larger scale networks because only changes to the
routing table are sent to all the other routers in the network as
opposed to sending the entire routing table at a regular interval,
which is how RIP functions.
Password
A sequence of characters that is used to authenticate requests to
resources on a network.
Personal Area Network
The interconnection of networking devices within a range of 10
meters.
Physical layer
The first layer of the OSI model. Provides the hardware means of
transmitting electrical signals on a data carrier.
Ping
A utility program that verifies that a given Internet address exists
and can receive messages. The utility sends a control packet to
the given address and waits for a response.
PoE
Power over Ethernet. The means of transmitting electricity over
the unused pairs in a category 5 Ethernet cable.
POP3
Post Office Protocol 3 is used for receiving email.
Port
A logical channel endpoint in a network. A computer might have
only one physical channel (its Ethernet channel) but can have
multiple ports (logical channels) each identified by a number.
PPP
Point-to-Point Protocol is used for two computers to communicate
with each over a serial interface, like a phone line.
PPPoE
Point-to-Point Protocol over Ethernet is used to connect multiple
computers to a remote server over Ethernet.
PPTP
Point-to-Point Tunneling Protocol is used for creating VPN
tunnels over the Internet between two networks.
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Summary of Contents for ARC CBA850
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