5.1 Flashcards
1
Q
internet (2 marks)
A
-the word “internet” comes from INTERconnected NETwork (internet)
- the internet IS NOT tangible
2
Q
WWW (World Wide Web) 3 marks
A
- part of the internet that can be accessed using a web browser software
- it is a collection of webpages
- it is a way of accessing information using the internet
3
Q
internet vs the WWW
A
see ppt and memorize the table!
4
Q
URLs (3 marks)
A
- URL = uniform resource locators
- they are text addresses used to access websites
- website address = domain host (www), domain name (website name), domain type (.com, .org,..etc) +sometimes country code (.kr, .uk..etc)
5
Q
HTML (3 marks)
A
- contains structure and presentation
- structure holds : semantics (meaning), HTML tags, and structural mark-up
- presentation = the style of the document (using CSS)
6
Q
HTML tags
A
- defined by a start tag, content, and an end tag
- the ELEMENT is everything from the start tag to the end tag
ex. <tagname>content..</tagname>
7
Q
HTML tags (3 marks)
A
- defined by a start tag, content, and an end tag
- the ELEMENT is everything from the start tag to the end tag
ex. <tagname>content..</tagname>
8
Q
CSS ( 2 marks)
A
- CSS = cascading style sheet
- used to control the font and color (design) of your document
9
Q
http and https ( 4 marks)
A
- http = HyperText Transfer Protocol
- http = set of rules for transferring files across the internet
- https = http with a security feature
(“s” stands for “secure”) - https is slower than http
10
Q
SSL (3 marks)
A
- SSL = secure sockets layer
- protocol that allows data to be sent and received securely over the internet
- SSL encrypts data, it will show a padlock in the status bar
11
Q
4 features of SSL
A
uses encryption,
uses digital certificates,
makes use of public and private keys,
SSL data is meaningless without the key
12
Q
SSL in action
A
memorize the chart in ppt
13
Q
TLS ( 3 marks)
A
- TLS = transport layer security
- similar to SSL but more recent security system than SSL
- TLS layers = record layer, handshake layer
14
Q
Web browsers (3 marks)
A
- software that allows a user to access and display web pages
- features: homepage, can store bookmarks, multiple tabs, uses cookies
- how it loads: request, send, receive
15
Q
DNS server (3 marks)
A
- DNS = domain name server
- system for finding IP addresses for a domain name given in a URL
- DNS process involves more than 1 server
