ADSL: Asymmetric Digitial Subscriber Line - Fast data transmission over copper telephone lines.

Fibre: data carried by thin plastic/glass fibres - fast, no delays due to quick light pulses.

FTTB: Fibre to the Business

FTTH: Fibre to the Home

Installation and use of fibre cables for high speed internet access

Limitations:

• Not portable, requires telephone line or fibre connection

• expensive to install/maintain

• may not be accommodated in your area

• portable and mobile (3G, 4G, LTE)

• 3G - "G" generation

• 4G/LTE - make use of infrastructure of cellular networks (cellphone tower) EG: MTN/Telkom

• enables devices with 3G/4G/LTE to offer high speed interent acess

• phone can also act as a modem for other devices (personal hotpots)

Wireless Fidelity

uses radio waves to transmit data

• personal hotspot - phone to another device

• connection range is small (3-5m)

• some hotspots are free - airports, gym, library

WISP: Wireless Internet Service Provider, subscription or pay per connection made to other hotspots

• speed = faster than Wi-fi

• range = 10-100x greater than Wi-fi

• Expensive to install and operate

• Wimax is competing against an existing technology

• convienience - 24/7

• safer - no large sum of money in on person

• transactions often faster and cost less - no bank charges for using a card

• internet connection required

• be aware of phishing/scamming

how online shopping works:

1. create an accoint (username and apssword)

2. browse (add to cart)

3. checkout - pay with EFT or card

4. make a booking/movie etc

EG: booking.com, takalot, Superbalist

• convieneince (24/7)

• prices can be cheaper than in store

• business reduces overhead costs

• businesses dont need to keep large stock

• better to see goods/tryon etc

• delivery and import tax - takalot min spend of R500 for free delivery and Shein import tax

• online harassment

• spread of rumours, bullying through onljne communication methods

• involves aggression, repetitive negative actions

• often a group activity

• done by an individual that is obsessed with someone

• use technology/social media to track activities

• done to harass, control and intimidate 

detects viruses by scanning the computes files and memory and matches patterns to a database

EG: AVAST

keeps a list of websites known to contain and distribute spyware

works similar to antivirus

websites pretending to be legit to gain personal information or steal money

redirecting a user to a fake website through links, usually by email, to install malicious software on the computer

a user/hacker watching movements on a computer to gain passworks and information

user/software that tracks key strokes to gain access to a computer through pin/password