Week 5 Flashcards
What does URL stand for?
Uniform Resource Locator.
HTML is not a programming language. It’s a markup language providing a set of formatting commands.
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HTML is backward-compatible, meaning that ancient HTML will still be compatible. This makes HTML extensible.
Which organisation maintains the HTTP Standard?
IETF.
What does case insensitive mean?
That both uppercase and lowercase characters mean the same thing.
What year did the World Wide Web become available to the public?
1991.
Which organisation manages the HTML standard?
The World Wide Web Consortium (W3C).
What layer does HTTP operate on?
The application/session layer.
What kind of protocol state is HTTP considered?
A stateless protocol, meaning that the server does not keep any data (state) between two requests.
What can a web server be referring to?
It can refer to hardware or software, or both of them working together.
- hardware is the physical server where data is stored
- software can be several parts that control how web users access hosted files
What type of compression does JPEG use?
Lossy compression. It averages out colours within the image and loses some pixel detail, which leaves compression artefacts in place of the detail.
What is a compression artefact?
A noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression.
What type of compression do PNG files use?
Lossless compression.
What type of compression do GIF files use?
Lossless compression.
