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BTM 200- UNIT 5- COMMUNICATION AND NETWORKS
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BTM 200- UNIT 5- COMMUNICATION ANDNETWORKS
Digital Convergence - ANSWER is the gradual merger of computing and
communications into a new information environment, in which the same
information is exchanged among many kinds of equipment, using the language
of computers.
Digital - ANSWER Signals that the computer uses to process a series of data 0s
and 1s, off and on.
Analog - ANSWER signals that use wave variations, continuously changing.
Can analog data be changed into digital data? - ANSWER yes, by using
modems
Modem - ANSWER short for modulate/ demodulate. Communications
hardware device that facilitates the transmission of data.
What does WAN stand for? - ANSWER Wide Area Network. It allows
communication around the whole world. It is meant to help others share
resources. Example: The Internet
What does MAN stand for? - ANSWER Metropolitan Area Network.
Communications network covering a
city or a suburb. Many cellphone systems are MANs.
, What does LAN stand for and what is it? - ANSWER Local Are Network.
Connects computers and devices in a limited
geographic area, such as one office, one building, or a group of buildings close
together. (A home area network is a LAN.)
What does P2P stand for? - ANSWER peer-to-peer. All computers in the
network are "equal" and talk directly to each other, using no servers.
client/server network - ANSWER A network that relies on centrally
administered computers, called "servers", for resource sharing to and for
facilitating communication between the other computers on the network.
Intranets - ANSWER use infrastructure and standards of the Internet and the
web, but for an organization's internal use only.
Extranet - ANSWER Similar to an intranet but allows specific users outside of
the organization to access internal information systems.
VPNs - ANSWER (virtual private networks): use a public network, usually the
Internet plus intranets and extranets, to connect an organization's various sites)
but on a private basis - via encryption and authentication; regular Internet users
cannot access the data and information on the VPN.
Firewall - ANSWER a system of hardware and/or software that protects the
system from intruders. It is a security software for the intranets, extranets and
VPNs.
Hosts - ANSWER Client/server network has a host computer, which controls
the network.
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