5.1 the internet and the world wide web Flashcards
1
Q
difference between internet and world wide web
A
- internet is the infrastructure
- www is collection of websites and web pages accessed using internet
2
Q
what is a URL
A
- uniform resource locator
- text-based address for web page
- contain protocol, domain name, web page/film name
3
Q
what does HTTP stand for
A
hypertext transfer protocol
4
Q
what does HTTPS stand for
A
hypertext transfer protocol secure
5
Q
purpose of HTTP(S)
A
safety protocols maintained while transmitting data
6
Q
describe internet
A
- use transmission protocols (eg TCP and IP)
- allow user to communicate with others
- worldwide collection of interconnected networks and devices
7
Q
describe world wide web
A
- collection of webpages and other information on websites
- use HTTP(S) protocols that are written using HTML
- URLs used for location of web pages
- web browsers can access web pages
8
Q
what does HTML stand for
A
hypertext mark-up language
9
Q
purpose of URLs
A
locate and access web pages
10
Q
typical format of URL
A
protocol://website address/path/file name
11
Q
which protocols used in URLs
A
HTTP or HTTPS
12
Q
what does a website address contain
A
- domain host (www)
- domain name (website name)
- domain type (.com, .org, .net, .gov) or sometimes country codes
13
Q
purpose of web browser
A
- render HTML
- display web pages
14
Q
functions of web browser
A
- store bookmarks and favourites
- record user history
- allow use of multiple tabs
- store cookies
- provide navigation tools
- provide address bar
15
Q
describe retrieval and location of web pages
A
- web browser send URL to DNS
- DNS stores index and matches it with IP address
- IP sent to browser if it exists
- browser send request to IP of web server
- browser interprets the HTML
