Week1 Flashcards
Which devices are used to access the internet
Smart phones, computers, smart televisions, tablet devices
What is the World Wide Web
A service that connects information from around the world
With a common protocol
What types of websites (Uses for) are there (4)
1) Information services (Wikipedia, company information)
2) entertainment (streaming, games)
3) shopping services (buy, sell)
4) community building services (Facebook, reddit)
The set of rules that govern how communication occur between devices
Protocol
List 3 common HTTP server responses and their meaning
200 OK: means the request succeeded
400 Bad request: server could not understand the request (syntax error)
404 Not Found: server can not find requested resource
What is a URL
Uniform resource locator is a unique human readable string to identify a web server. The URL gets converted to an IP address for the browser to request websites from
What does HTTP stand for
Hyper text transport protocol
What is a web client
Software running on a device that can request webpages and related content from a webserver and is capable of presenting the data received from a webser
What is a web server
Software that listens for a request for a webpage and delivering the web page.
A web server also stored the multimedia for the webpage and the rules for presenting the information on a client device.
Can a webpage contain content from multiple servers?
Yes
Which protocol do web servers and web clients use to negotiate the transfer of data
HTTP
Describe Time dependent and time independent media
Time Dependent : audio, video, animation, games
Time independent: text, images, data
How is text represented on the internet
Numerical codes. ASCII
How is images represented
RGB values for each pixel (Dot) of the image
What is lossy and lossless compression
Lossy ; data is lost on detail and filled in using estimated values
Lossless; no data is lost on compression :
