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P
PCM
PING
PPPoE
Protocol
R
PCM (Pulse Code Modulation) is a technique for converting
analog audio signals into digital form for transmission.
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.
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.
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.
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