| RARP |
See Reverse
Address Resolution Protocol. |
| RECEIVE
WINDOW |
A range
of sequence numbers that a sender can transmit at a given time. |
| RECURSION |
When a
subroutine makes a call to itself. |
| REGULAR
EXPRESSIONS |
A way
of specifying a pattern so that some strings match the pattern and some
strings do not. Parts of the matching pattern can be marked for use in operations
such as substitution. |
| REMOTE |
Pertaining
to a host on the network other than the computer you now are using. |
| REMOTE
HOST |
A host
on the network other than the computer you currently are using. |
| REMOTE
NETWORK MONITO |
(RMON)
A device (such as a workstation) that collects and maintains information
about network traffic. |
| REMOTE
PROCEDURE CALL |
(RPC)
A TCP/IP protocol that provides a routine which calls a server that returns
output and status (return) codes to the client. |
| REPEATER |
Device
that allows you to extend the length of your network by amplifying and repeating
the information it receives. |
| REPEATER |
A network
device that boosts the power of incoming signals to enable the length of
a network to be extended. |
| REQUESTS
FOR COMMENT |
(RFCs)
Documents containing specifications for TCP/IP protocols. RFCs are also
used to propose new protocols. RFCs are available from the Network Information
Center (NIC). |
| RESOLVER |
Software
that enables clients to access the Domain Name System (DNS) database and
acquire an address. |
| RESOURCE |
Usually
refers to application programs, but also used generally to refer to system
capabilities such as memory, networks, and so on. |
| RETRANSMISSION
TIMEOUT |
Occurs
when data has been sent to a destination but no acknowledgment has been
received when a timer has expired. When a retransmission timeout occurs,
the protocol usually resends the data. |
| REVERSE
ADDRESS RESOLUTION PROTOCOL |
(RARP)
A TCP/IP protocol that enables a device to acquire its IP address by performing
a broadcast on the network. |
| RFC |
(Request
for Comments) A document submitted to the Internet governing board to propose
Internet standards or to document information about the Internet. |
| RIP |
(Routing
Information Protocol) A TCP/IP protocol used to exchange information about
routing. Usually used when only a small number of computers are in use. |
| RLOGIN |
A UNIX
command that allows you to log on to a remote computer. |
| ROUND
TRIP TIME |
The time
for a TCP segment to be sent and its acknowledgment received. |
| ROUTER |
Equipment
that receives an Internet packet and sends it to the next machine in the
destination path. |
| ROUTER |
A device
that connects LANs into an internetwork and routes traffic between them. |
| ROUTING |
The process
of determining a path to use to send data to its destination. |
| ROUTING
INFORMATION PROTOCOL |
(RIP)
A protocol used to exchange information between routers. |
| ROUTING
TABLE |
A list
of valid paths through which data can be transmitted. |
| RS232C |
A physical
layer specification for connecting devices. Commonly used for serial lines. |