Computer World. Матросова Т.А. - 31 стр.

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30
Directory in Windows 2000, or another architecture such as Novell
Directory Services (NDS) for Novell NetWare.
• Terminal-based networking, which might be the traditional host-based
mainframe environment; the UNIX X Windows environment; the
terminal services of Windows NT 4, Server Enterprise Edition;
Windows 2000 Advanced Server; or Citrix MetaFrame.
Or we could look at the networking technologies used to implement each
networking architecture:
• LAN technologies such as Ethernet, ARCNET, Token Ring, Banyan
Vines, Fast Ethernet, Gigabit Ethernet, and Fiber Distributed Data
Interface (FDDI).
• WAN technologies such as Integrated Services Digital Network (ISDN),
Tl leased lines, X.25, frame relay, Synchronous Optical Network
(SONET), Digital Subscriber Line (DSL), and Asynchronous Transfer
Mode (ATM).
• Wireless communication technologies, including cellular systems such
as Global System for Mobile Communications (GSM), Code Division
Mult ip le Acc ess (CDMA), Personal Communic at ions Servic es (PCS),
and infrared systems based on the standards developed by the Infrared
Data Association (IrDA).
We could also consider the hardware devices that are used to implement these
technologies:
• LAN devices such as repeaters, concentrators, bridges, hubs, switches,
routers, and Multistation Access Units (MAUs).
• WAN devices such as modems, ISDN terminal adapters, Channel
Servic e Un its (CSUs), Data Servic e Units (DSUs), pac ket
assembler/disassemblers (PADs), frame relay access devices (FRADs),
multiplexers (MUXes), and inverse multiplexers (IMUXes).
• Equipment for organizing, protecting, and troubleshooting LAN and
WAN hardware, such as racks, cabinets, surge protectors, line
conditioners, uninterruptible power supplies (UPS's), KVM switches,
and cable testers
• Cabling technologies such as coaxial cabling, twinax cabling, twisted-
pair cabling, fiber-optic cabling, and associated equipment such as
connectors, patch panels, wall plates, and splitters.
• Unguided media technologies such as infrared communication, wireless
cellular networking, and satellite networking, and their associated
hardware.
• Data storage technologies such as RAID, network-attached storage
(NAS), and storage area networks (SANs), and the technologies used to
connect them, such as Small Computer System Interface (SCSI) and
Fibre Channel.

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