Section IV: The Internet, Social Media, and Mobile Computing Flashcards
What is free software?
software with source code that could be inspected, modified, and used by anyone
What did Richard Stallman call his Unix-compatible OS?
GNU
What software license did GNU have?
a GPL
By the late 1980s, GNU was mostly complete except for which component?
the kernel
Where was the Linux kernel invented?
Finland
Who invented the Linux?
Linus Torvalds
Which OS did Torvalds use as a starting point for his Unix-like OS?
the Minix
Who invented Minix?
Andrew Tanenbaum
Torvalds began rewriting the Linux kernel to take advantage of what?
the features of the Intel 80386 processor
Over time, what happened to the Minix code used for the Linux kernel?
it was entirely rewritten
Torvalds released the Linux under which license?
the GPL
Which kernel did the GNU use?
the Linux
When did the U.S. break up the AT&T government monopoly?
1984
What was the result of the AT&T monopoly being broken up?
it could now market Unix more aggressively, charging steeper licensing fees
To which company did AT&T sell the Unix rights in 1993?
Novell
When was hypertext coined?
the 1960s
Who coined the term hypertext?
Ted Nelson
Hypertext was inspired by which hypothetical machine?
the memex
Who made the memex?
Vannevar Bush
In the 70s, Nelson began working on a hypertext system called _______.
Xanadu
What company was also working on a hypertext system during the 70s?
Apple, it was called HyperCard
What best-selling video game was based on HyperCard?
Myst
The World Wide Web is a combination of which 2 technologies?
hypertext and the Internet
Apple bundled HyperCard with which computer?
the Macintosh
Where was the World Wide Web made?
CERN
What is CERN?
a physics laboratory located in Switzerland
Who created the World Wide Web?
Tim Berners Lee
What does HTML stand for?
Hypertext Markup Language
What is HTML used for?
embedding links into web pages
What special syntax does HTML code use?
Tags
In HTML, what is used to mark the beginning and end of a paragraph?
<p>
</p>
In HTML, what is used to mark the end of a paragraph?
</p>
What did Lee make to find the location of a document on the World Wide Web?
the URL
What is HTTP?
a protocol that allows computers to transfer web pages over the Internet
What does HTTP stand for?
Hypertext Transfer Protocol
When was the Web created?
1990
Why was the Web not useful when it was first made?
because there was only one web server
Where was Gopher made?
the University of Minnesota
Why did users come to the World Wide Web?
because of Internet services
What was the first popular web browser?
Mosaic
Who made Mosaic?
Marc Andreesen and Eric Bina
Why was Mosaic superior to previous web browsers?
because it could display text and images, allowed mouse clicks to make it easier to surf the web, and was compatible with Windows, Macintosh, and Unix
Most graphical web browsers before Mosaic only supported which OS?
Unix
Mosaic was a killer app in which decade?
the 1990s
Who approached Andreesen and Bina and offered to market and form a business for Mosaic?
Jim Clark
What was Jim Clark famous for?
founding Silicon Graphics in 1983
When Clark offered to market and form a business for Mosaic, what happened?
the University of Illinois intervened and said no because they claimed it was theirs
Anderseen left the University of Illinois and founded which corporation?
Netscape Communications Corporation
What new web browser replaced Mosaic?
Netscape Navigator
When was Netscape Navigator released?
1994
By the end of 1994, how many web servers were online?
10,000
At the end of 1995, how many downloads had Netscape Navigator gotten?
15 million
What was Netscape’s business model?
give away the browser to regular users for free but charge companies a license fee for the browser and the server software
Which Windows computer was the first model to not need a copy of MS-DOS?
Windows 95
What was Microsoft’s first web browser called?
Internet Explorer
Microsoft licensed the source code for Internet Explorer from which other web browser and company?
Mosaic, Spyglass
Why wasn’t Internet Explorer as polished as Netscape?
because it was based on old Mosaic code
What were the browser wars?
Internet Explorer and Netscape constantly releasing new versions to outdo each other
What part of the browser wars were the designers of the Internet not proud of?
its incompatibility, they would display messages that were unique for their web browser
When did Internet Explorer finally catch up to Netscape?
1998
What Microsoft computer included Internet Explorer pre-installed for free?
Windows 98
How did the fact that Internet Explorer was integrated into Windows 98’s OS benefit Microsoft?
it made it so Microsoft didn’t have to pay royalties to Spyglass, it was free so more people came to IE, and it reduced competition from Netscape
What was the resulting product of Netscape releasing its source code?
it created Mozilla
What was Mozilla?
a web browser, an email client, a web page authoring tool, address book, and calender
Why did Mozilla not gain any market share?
because it was slow, bloated, and laggy
In 2004, Mozilla released which other web browser?
Firefox
How was Firefox better than Mozilla?
it was fast and didn’t have all the extra features that slowed Mozilla down
What were the 2 most successful early search engines?
Yahoo and Google
When was Yahoo founded?
1993
Who founded Yahoo?
Jerry Yand and David Filo
What was Yahoo’s method for a search engine?
created a manually curated list of websites they chose
Why was Yahoo’s search engine strategy problematic?
there were soon tons of websites and they couldn’t manually input them all
When was Google invented?
1997
Who invented Google?
Larry Page and Sergey Brin
What are inbound links?
a link on a website that links to other web pages
What was Google’s strategy for creating an optimal search engine?
they created an algorithm that favored websites with more inbound links
When did Google start placing textual advertisements?
2000
What was the dot-com bubble?
a huge growth in people trying to strike it rich by creating their own tech companies, funded by wealthy investors
What were dot-coms?
tech companies started in the late 90s that grew very fast, but fell just as fast
What caused many dot-coms to fail?
when the global economy slowed and investors became more cautious about their money, occurred after the 2000 election and 9/11
Who created Java?
James Gosling
When was Java created?
1992
What was Java initially called?
Oak
What would Java’s compiler translate the programmer’s code into?
an intermediary assembly-like language called bytecode
What would bytecode be interpreted by?
another program called the Java Virtual machine