Chapter 6 Flashcards
Technique for making telephone calls over the
Internet.
VoIP (
The ability for all networks to connect to one
another
Network interoperability
An interconnected or interrelated chain, group, or
system
Network
Software that serves to “glue together” separate
program
middleware
The usefulness, or utility, of a network equals the
square of the number of users.
Metcalfe’s law
Internet-like networks that improve communications and collaboration, publish and share information, and develop applications to support
business operations and decision making within
an organization.
intranet
Provide Internet-like access to a company’s operational databases and legacy systems by its customers and supplier
Extranet
Company that provides individuals and organizations access to the Internet
. Internet service provider
A communications network covering a large geographic are
Wide area networks (WAN)
A communications network in an office, a building, or other works
Local area networks
(LAN)
Representation of an electrical signal using binary
number
Digital
Coaxial cable, microwave, and fiber optics are
examples.
Telecommunications media
A communications medium that uses pulses of
laser light in glass fiber
Fiber optics
A short range cable replacement technology for
digital devices.
Bluetooth
includes modems, multiplexers, and inter-network
processors
Telecommunications
processors
Includes programs such as network operating systems and Web browsers
Telecommunications software
A common communications processor for microcomputer
Modems
Helps a communications channel carry simultaneous data transmissions from many terminals
Multiplexer
Star, ring, and bus networks are examples
Network topologies
Representation of an electrical signal that is analogous to the signal itself
Analog
The communications speed and capacity of telecommunications networks
Bandwidth
. Intranets and extranets can use their network firewalls and other security features to establish secure
Internet links within an enterprise or its trading
partners
Virtual private network
(VPN
Sturdy cable that provides high bandwidth on a
single conductor.
Coaxial cable
Standard rules or procedures for control of communications in a netwo
Protocol
An international standard, multilevel set of protocols to promote compatibility among telecommunications network
Open Systems Interconnection
(OSI)
The standard suite of protocols used by the
Internet, intranets, extranets, and some other
networks
TCP/IP
information systems with common hardware,
software, and network standards that provide easy
access for end users and their networked computer
systems.
Open System
Interconnected networks need communications
processors such as switches, routers, hubs, and
gateways.
Inter-network processors
Web sites, Web browsers, HTML documents,
hypermedia databases, and TCP/IP networks are
examples
Internet networking
technologies
Networks in which end-user PCs are tied to network servers to share resources and application
processing.
Client/server network
Network computers provide a browser-based interfaces for software and databases provided by
servers.
Network computing
End-user computers connect directly with each
other to exchange files.
Peer-to-peer networks
Orbiting devices that provide multiple communication channels over a large geographical ar
Communications
satellites (
Older, traditional mainframe-based business information systems.
Legacy systems
Any arrangement in which a sender transmits a
message to a receiver over a channel consisting of
some type of medium.
Telecommunications
Provides wireless network access for laptop PCs in
business settings
Wireless LAN
Their goal is to improve the telecommunications
environment by fostering standardized protocols,
communications hardware and software, and
the design of standard interfaces, among other
things.
Network architectures
A type of communications network consisting of
terminals, processors, channels, computers, and
control software
Telecommunications network
Telecommunications technologies that do not rely
on physical media such as cables or fiber optics.
Wireless technologies
