the internet more of what you need to know. goals o today i am: describing the purpose of an ip...
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The InternetMore of what you need to know
GoalsO Today I am: Describing the purpose
of an IP address and its relationship to a domain name
O So that I can: Understand HOW the internet works
O I’ll know I’ve got it if: I can identify the difference between an IP address, a domain name and a DNS server
Statistics
1 billion websites
87% of American adults use the Internet
93% of teens go online
40% of those teens are online several times a day
Recap:Terms and Definitions
Do you know . . . ?
O InternetOHistory of the
InternetO ISPOWiFiOBroadband
IP An IP address is a number that
uniquely identifies each computer or device connected to
the internet
Domain Name A domain name is the text
version of an IP address
DNS Server A DNS Server translates the
domain name into its associated IP address
72.14.207.99• IP address
www.google.com• Domain name
Top-Level Domain
O There’s a hierarchical Domain Name system
O “Dot.Com”O Name some
familiar top-level domains
Get the most out of your search!
Operator Description Examples Explanation
Space or +Display hits that include specific words
art + musicart music
Results have both words art and music – in any order.
ORDisplay hits that include only one word from a list
dog OR puppy dog OR puppy OR canine
Results have either the word dog or puppy. Results have the word dog or puppy or canine.
( )
Combine hits that include specific words with those that include only one word from a list.
Detroit Michigan (pizza OR subs)
Results have both words Detroit Michigan and either the word, pizza, or the word, subs.
-Exclude a word from the search results
automobile-convertible
Results include automobile but do not include convertible.
“ “Search for an exact phrase in a certain order
“19th century literature”
Results have the exact phrase, 19th century literature.
*
Substitute characters in place of the asterisk.
writer*Results include any word that begins with writer (e.g. writer, writers, writer’s).
GoalsOToday I am: Learning how
to determine authority on the Web
OSo that I can: Evaluate reputable sources on the Internet
OI’ll know I’ve got it if: I can apply techniques for determining authority.
Questions:
O How often do you get information from the Internet?
O How much of it do you believe?
O How reliable do you think Internet information is?
OHow does it compare to information from books?
AuthorityOne way to determine whether information is
true and useful is to look at its authority.Today we’ll be talking about the role of
authority, especially on the Internet, and how you can determine the authority of sources.
Get into groupsYou’ll be assigned a website
First Things First
Top-level domain
Anatomy of a URL
Websites based in the United States
Websites based outside of the United States
O .comO .orgO .netO .milO .govO .edu
O Country of origin .au = Australia
O People anywhere can purchase .com, .org and .net domain names
Anatomy of a URLO .com =
commercial entity
O .net = network (ISP)
O nonprofits generally avoid .com to avoid affiliation with a commercial entity
O not all .com is commercial
O .gov, .mil and .edu = government, military and education
O BUT: students and faculty can have .edu so be careful!
O .gov or .mil has government or military backing
But be careful!4parents.gov in 2005 mad a lot of people
upset!
Anatomy of a URLO Some domains
exist to give free platforms for anyone to say anything
O blogger.comO Proceed with
caution!
Finding the author
“authority”
comes from the same root as
“author”
Internet AuthorsO Authorship can
be difficult to determine
O Some websites have many authors
O Some have no obvious author (Wikipedia!)
O Do not trust information unless you can determine who wrote what
O Check the “about” section of a website
O Or go to “FAQ”
Your TurnWho authored the information on your
Website?Is there a single author? A group of authors?
Where did the information come from?
Your TurnDoes your Website have editors?
This implies oversight!
Does your author have authority?
Not all authors are created equal.
SponsorshipIs your website “sponsored”?
If your website is a blog . . .
Check out it’s “parent”. And then see if their “parent” is trustworthy.