These summaries provided the perfect solution to obtain all the necessary information without needing to open the book. These summaries cover the CAPS gr. 12 IT theory syllabus. Summaries perfect to use before starting with past papers.
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Module 1.2
Cloud Computing
Use of resources that are offered as services over the internet and that are shared.
Store files online
Data is processed somewhere on the internet.
Data and processing power will always be accessible no matter the physical
location
Devices does not matter
Need fast and reliable internet connection
Examples
Online storage – file syncing
e.g., iCloud, OneDrive
Store files on internet; specify which files
Access from multiple device
Share with others
Duplicate copy offsite.
Most have a web interface: browser to access files
Custom app: manages syncing
Free for limited amount of storage
Online storage – backup
Meant to be accessed after disaster, not a virtual hard drive
Automated schedules
Add duplicate files as they change, can go back to previous versions
Encrypt data, increased security
E.g., CrashPlan
Subscription fee per person/computer rather than size
Media Repositories
Safe storage location online
Allow you to buy media and provide access to purchase history
Don’t keep individual copies of files – single copy of song and simply control who has
access
Yearly subscription
E.g., Amazon
Cloud Applications
Software where most of the processing is done ‘in the cloud’
Program stored locally or page on web browser
Consumer cloud applications: Photosynth – upload photos to create a 3D, zoom able
scene
E.g., Facebook, Gmail
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