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CS&E 200 Final Exam Review
Terms and Defenitions From internet section
34
Computer Science
Undergraduate 1
06/02/2009

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Term
Architechture
Definition
How Pieces Fit Together-Physical Links
Term
Protocol
Definition
Rules of communication observed between the pieces (Adopted by "all")
Term
WWW
Definition
Implemented in hosts, servers, and routers at "network edge" "on top of" existing network
Term
When and why was the internet invented? (1) Study Card
Definition
in 1957 the internet was developed as a reaction to the soviet launch of sputnik. The us government funded the agency ARPA (how can we communicate if a link goes down?) this was the question asked because in 1957 communication networks used a chained point to point approach. Obviously this was not very reliable.
Term
WWW
Definition
Implemented in hosts, servers, and routers at "network edge" "on top of" existing network
Term
When and why was the internet invented? (2) Study Card
Definition
1962-1969 "fishnet structure"&@& (architecture) explored, as well as "packet switching"&@&(protocols). both of these were new methods to relay messages across network.
Term
When and why was the internet invented? (3) Study Card
Definition
in 1969 the original ARPANET had 4 "nodes"$&$
Term
Node
Definition
an active electronic device that is attached to a network, and is capable of sending, receiving, or forwarding information over a communications channel.
Term
When and why was the internet invented? (4) Study Card
Definition
1982-1991 the internet developed into the form that we have today.
Term
When and why was the internet invented? (5) Study Card
Definition
1982- TCP/IP transfer protocols were adopted after almost a decade of development & testing.
Term
When and why was the internet invented (6) Study Card
Definition
1989- "HTTP"$&$ was introduced
Term
HTTP
Definition
allowed for the use of text, graphics, and sound. By 1990 the first web browsers were introduced.
Term
ISP
Definition
internet service provider- collects and switches traffic-AOL, AT&T, Verizon. (some companies are both ISP and IPP
Term
IPP
Definition
Internet presence provider- virtual real estate landlord- Stores our html files, mail, etc.
Term
Layers of Protocol Standards-Application Layer
Definition
Specific to application: Browsing, email, file transfer (FTP,HTTP,SMTP)Services specific application architecturally "above" network core.
Term
Layers of Protocol Standards-
Transmission Layer
Definition
-Creates packets for transmission
-Requests connection (TCP)& finds IP address. Prepares the messages for transmission to the network.
Term
Layers of Protocol Standards-
Network Layer
Definition
Handles routing and addressing (IP) to next stop
Term
Layers of Protocol Standards-
Physical (or link) layer
Definition
transmits the signal for a specific connection. Prepares the bit stream for transmission receiving, storing, and interpreting signals
Term
FTP
Definition
File Transfer
Term
HTTP
Definition
Web pages
Term
Email
Definition
SMTP
Term
IP Address
Definition
location to send message to
Term
Domain name server
Definition
A service that cross references all of registered Domains/IP adresses
Term
Packets
Definition
Transmission layer breaks up our messages into smaller "packets". Each packet is then addressed and and transmitted. when all of the packets are received at their final destination, the transmission layer reassembles these "packets" according to the protocol used by the sender. A transmission layer is applied to each packet including: where it came from, where its going, total number of packets in the full message, size of this packet, protocol type-verification checks.
Term
HTML/HTML Code
Definition
HTML-Hypertext markup language. the language used to write web pages. You can view a web page normally through a browser, or you can view it in "HTML Code"- the code that tells the browser what to do.
Term
Link
Definition
a pointer to somewhere else
Term
Anchor
Definition
a link that sends your browser to another location.
Term
Linked text
Definition
tells the user what the link is for
Term
anchor tag
Definition
what you use to create a hypertext link
Term
Definition
image tag- not an anchor, does not take you to a separate webpage
Term
absolute link
Definition
addresses the link to a fixed URL or file. with an absolute link you can link to files on other hosts. No matter where your file is moved to, the links will not change. Your are not required to store these files on your own server.
Term
Relative link
Definition
addresses the link to a file path/name which is relative to your current file path. oftentimes when the image is not displayed, a relative URL has been used but the desired file does not reside in the directory path of the referencing computer.
Term
create your own web pages with
Definition
MS-Word, netscape, dreamweaver, frontpage
Term
to publish a web page you must do the following
Definition
1.have an IPP
2.Save your files to the correct file directory on the provider's system(W:\WWW)
3.name the files to match the default name of your website and give any files you link to the correct paths/filenames as well (index.html
4.Set permissions so others can view your file-but not change them(everyone-read only)
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