internet gr 11

Question 1

web evolution

Answer 1

web 1.0 static - only able to view web pages
web 2.0 - can listen to audio, communicate w others, user generated sites, real time notifications
web 3.0 semantic web- blogs, personalised
web 4.0 mobile web, bots, connects devices in real world and virtual world in real time
web 5.0 neural networks

Question 2

client side scripting

Answer 2

used to make web pages change after they arrive at the browser
makes pages interesting + user friendly
used for appearance + interaction

user requests web page from server
server finds page and sends it to user
page displayed on browser w scripts (set of instructions) running after display

Question 3

server side scripting

Answer 3

allow users to have individual accounts + provides data from database
allows privacy,personalisation + provision of info
run on server- never seen by user

user requests web page from server
script in page is interpreted by server changing page content to suit user + occasion

Question 4

comb of client and server side scripting

Answer 4

server side - handle logging in, personal info and preferences + provide data user
client side- page interactive, data displayed and sorted in ways as required by user

Question 5

cookies

Answer 5

small piece of data sent from website + stored in web browser
website made aware of user’s prev activity
makes it easier to visit site again + makes site more useful to you

small text file saved in users browser to store their history and preferences

Question 6

web based applications

Answer 6

software that runs on web browser
need internet to be accessible (limited functionality, accessible on diff devices-synchronous ,not limited to OS)
google classroom, gmail,docs,sheets
office online, office 365

Question 7

web based applications advantages

Answer 7

no need to purchase and install software
accessed anywhere any time w internet
not limited by OS
kept up to date

Question 8

web based applications advantages

Answer 8

no need to purchase and install software
accessed anywhere any time w internet
not limited by OS
kept up to date

Question 9

mobile website

Answer 9

web based application run on mobile device
separate site for mobile due to diff in size, OS system + don’t have separate key board
condensed version of full desktop site
content streamlined , large files removed

Question 10

responsive web

Answer 10

design philosophy and set of techniques to create positive user experiences for devices adapting to screen size

Question 11

mobile applications.

Answer 11

applications downloaded + installed on mobile devices
can access stuff from Internet or download content so internet connection not required

Question 12

native mobile apps

Answer 12

written in native development language specific to platform of device (iOS, android)

Question 13

hybrid mobile apps

Answer 13

blend of native + web solutions
written w cross platform web technology (HTML,CSS,JavaScript)
plugins/extensions - piece of code added that adds functions

Question 14

design factors to consider for mobile devices

Answer 14

-screens : sensitivity to touch, quality of resolution
processing demands:consider processing specs of smartphone processors
storage demands: mobile devices have limited storage
bandwidth requirements- bandwidth requirements of app important

Question 15

plug in vs extensions

Answer 15

plug ins- software module to add special feature/customise computer program .exe
extension- small software module that provides customisation of web browser

Question 16

search engines

Answer 16

program that searches web for specified keywords + returns list of web pages that match criteria

Question 17

lossy compression

Answer 17

reduces no. of bits by identifying and eliminating statistical redundancy

Question 18

lossless

Answer 18

no info lost
size of og file and restored file are same

Question 19

what is quality of sound dependent on

Answer 19

sample rate - no. of audio samples captured every second
bit depth- no. of bits available
for each clip
bit rate - no. of bits used per second of audio

Question 20

download

Answer 20

receiving data from central server to users computer
copy of file saved to storage location on your computer
can be viewed offline

Question 21

streaming

Answer 21

delivering data continuously from internet in real time
video audio files played as opened on computer
not saved on computer
sometimes small wait (buffering) is necessary before file plays
requires internet connection

Question 22

VOD/AVOD

Answer 22

video on demand
audio and video on demand
systems which allow user to select and watch/listen to video or audio content whenever they desire
stream programs to device so broadcast in real time orrr download it to view later

Question 23

VoIP

Answer 23

voice over internet protocol
communication protocols, technologies,methodologies and transmission methods involved in delivering voice and multimedia data using IP networks (eg internet)
skype,discord,zoom- VoIP apps - can bypass traditional phone systems

Question 24

podcast/vodcast

Answer 24

podcast - series of on demand digital audio files accessible online but can be downloaded
content communicated directly to you
if subscribed- next episode automatically downloads
can listen whenever wherever while doing something else
vodcast - podcast contains video content

Question 25

mp3 compression

Answer 25

uncompressed audio files - high quality WAV or AIFF up to 30mb
compressed - MP3 w 3mb w minimal loss of quality
compression removes frequencies we cannot hear