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Glossary A-3
DOS kernel
The DOS kernel is the part of DOS that handles a standard DOS call (Int
21h). It handles opening, reading/writing of files, loads programs, and
manages memory.
FAT
File Allocation Table – a data table that allows DOS to keep track of file
location on the disk so that they can be accessed by programs running on
DOS.
Flow control
Control of the rate at which hosts or routers inject packets into a network
or Internet, usually to avoid congestion.
Memory disk
A disk that uses either ROM or RAM for the disk media. The memory disk
has a FAT, directories, and file data.
Modem
A modem (modulator/demodulator) converts digital computer signals into
analog signals as used in telephone equipment. The data is sent across
the telephone lines and converted back to digital signals by another
modem at the destination node.
Using dial-up modems, a remote client can gain access to a network
through the telephone line. Remote client users can gain access to the
network resources just as if they were physically connected to the LAN.
SOCKETS supports the PPP, SLIP and CSLIP protocols.
PCMCIA
Personal Computer Memory Card Interface Association. PCMCIA is a
group that defined the standard for a credit-card size card that may act as
a memory RAMDISK, ROMDISK, or FLASHDISK. These cards are
commonly referred to as PC cards.