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P
PCM
PCM (Pulse Code Modulation) is a technique for converting
analog signals into digital form for transmission.
PING
Packet Internet Groper, a utility used to determine whether a
specific IP address is accessible. It functions by sending a
packet to the specified address and waits for a reply. It is
primarily used to troubleshoot Internet connections.
PPPoE
Point-to-Point Protocol over Ethernet. PPPoE is a specification
for connecting the users on an Ethernet to the Internet through
a common broadband medium, such as DSL or cable modem.
All the users over the Ethernet share a common connection.
Protocol
Communication on the network is governed by sets of rules
called protocols. Protocols provide the guidelines devices use
to communicate with each other, and thus they have different
functions. Some protocols are responsible for formatting and
presenting and presenting data that will be transferred from file
server memory to the file server’s net work adapter Others are
responsible for filtering information between networks and
forwarding data to its destination. Still other protocols dictate
how data is transferred across the medium, and how servers
respond to workstation requests and vice versa. Common
network protocols responsible for the presentation and
formatting of data for a network operating system are the
Internetwork Packet Exchange (IPX) protocol or the Internet
Protocol (IP). Protocols that dictate the format of data for
transferors the medium include token-passing and Carrier
Sense Multiple Access with Collision Detection (CSMA/CD),
implemented as token-ring, ARCNET, FDDI, or Ethernet. The
Router Information Protocol (RIP), a part of the Transmission
Control Protocol/Internet Protocol (TCP/IP) suite, forwards
packets from one network to another using the same network
protocol.
R
RJ-45 RJ-45 connector is used for Ethernet cable connections.
Router
A router is the network software or hardware entity charged
with routing packets between networks.