Exam (elaborations)
GC 2400 Test 1
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Exam of 5 pages for the course 2400 Final Exam Study Guide at 2400 Final Exam Study Guide (GC 2400 Test 1)
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GC 2400 Test 1Where did the internet come from, how did it start? - ANS-Started as a government
project in 1957. Protected info and communication from being destroyed in times of
nuclear threats.
What are some ways we could describe the internet? - ANS-A network of networks. A
series of connected computers that still function even if one piece is removed.
How does information move around? - ANS-Packet Switching - Messages are broken
up into little pieces and passed across the network. It is then placed back together at its
destination.
Difference Between Server and Client Computer - ANS-Server - A computer connected
directly to the internet. Web pages are files stored on this computer.
Client - Connected indirectly to the internet through an internet service provider.
IP Adress Vs. URL - ANS-IP (Internet Protocol) - Identifies 1 server on the internet, like
a street address.
URL (Uniform Resource Locator) - Each one represents an IP address and simply make
access more convenient.
DNS Servers - ANS-Domain Name Servers - A few store ALL the URL's paired with IP
addresses.
How do IP addresses, URL's, and DNS interact? - ANS-1. Your computer connects with
nearest DNS server.
2. DNS responds to request with location (IP address)
3. Computer establishes a connection through the internet to the designated IP address.
4. The server responds and sends the data and your browser interprets to display the
webpage.
HTTP - ANS-Hypertext Transfer Protocol - regulates how data about webpages is
organized and passed from one computer to another.
FTP - ANS-File Transfer Protocol - Regulates how files are up/downloaded to ensure
the files are in-tact on the other end.
, What is the value of using things like alt text, form field labels, meta data, header
organization, page titles, etc? - ANS-These add data to the website which can be used
for the vision impaired,
What can web developers use to make notations and organizational notes within their
code that won't display on the final output of the webpage? - ANS-Comment tag
<!--...-->
What is html? - ANS-HTML is a standardized markup language for the internet.
The "guts" of the page
What is the best naming convention for html files? - ANS-Name files in a way that
indicates their content (i.e. index.html, contact.html)
What are the main parts/sections of an html page? - ANS-<head> This section contains
things like <meta>, <link>, and <title>
<body> This section contains things like <p>, <img/>, and <h1>
How do attributes relate to an html element? - ANS-Attributes describe an html element.
style="property:value;"
Know how to write some basic html elements and know attributes that modify them. If
the element is on the slides, you should know it. - ANS-
For the anchor (<a>) element, know the different values of the "target" attribute. - ANS-
What image formats are appropriate for the web? Why would you use a .jpg in certain
cases and not others? - ANS-.jpg - lossy compression, best for photos, no transparency.
.gif - lossless compression, can be interlaced, small file sizes, animation options, poor
detail for photos, limited transparency.
.png - lossless compression, alpha transparency.
What are some different ways to define color? What do these formats look like? -
ANS-Hexidecimal - #FFFFFF
RGB - rgb(192, 192, 192)
Color Name - 147 designated color names (red, blue, etc.)
Why is it important to declare a DOCTYPE at the beginning of an html document? What
does declaring a DOCTYPE do? - ANS-DOCTYPE standardizes page rendering.
Without it, browsers have trouble interpreting the code properly.
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