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Related Flashcards
Cards In This Set
| Front | Back |
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Internet
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Interconnected network of computer networks- started as network to connect comps @ research facilities and universities- TCP/IP- orig limited to govt, research, and edu purposes- text-based
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intranet
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Private network contained w/in an org. or bus.- share organisational info/resources among coworkers- gateway/firewall protects from unauthorised access
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extranet
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Private network that securely shares part of an org.'s info or operations w external partners- exchange data/share info w bus. partners and orgs.- security includes digital certificates, encryption of msgs and VPNs
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Three events that occurred causing explosive growth of the Internet
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-restriction on commercial use of Internet removed- creation of WWW- first graphics-based Web browser
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World Wide Web Consortium (W3C)
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Takes proactive role in developing recs and prototype tech related to Web- web architecture- user interface- technology and society- Web Accessibility Initiative (WAI)
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protocols
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Rules that describe
how clients and servers comm. w each other over a network
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File Transfer
Protocol (FTP)
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Set of rules that
allow files to be exchanged bw comps on the- used simply to
move files from one comp to another
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Hypertext Transfer
Protocol (HTTP)
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Set of rules for
exchanging files such as text, graphic images, sound, video, and
other multimedia files on the Web.
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Transmission
Control Protocol/Internet Protocol (TCP/IP)
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Official comm.
protocol of the Internet
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TCP
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Purpose
is to ensure integrity of network comm.- breaks
files and msgs into packets containing info such as destination,
source, sequence number, and checksum values used to verify integrity
of the data
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IP
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Domain Name
System (DNS)
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Associates IP
addresses w text-based URLs and domain names you type into a Web
browser address box- associates
text-based domain names w unique numeric IP address assigned to a
device
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Uniform Resource
Identifier (URI)
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Identifies a
resource on the internet
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Uniform Resource
Locator (URL)
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Type of URI which
reps the network location of a resource such as a web page, a graphic
file, or an MP3 file. - consists
of the protocol, the domain name, and the hierarchical location of
the file on the web server
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markup languages
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Consist of sets of
directions that tell the browser sftw how to display and mng a web
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