Information Technology (grade11& 12) 2025
Summary Information Technology Grade 12 & 11 Theory
Revised question and approved answers
Multifunctional Devices - ✔✔✔Devices that can perform multiple functions.
SD cards - ✔✔✔Small flash memory cards that are commonly used for storage in digital cameras and some
smartphones
SD Cards + - ✔✔✔Very small and portable
Easy to transfer between devices with SD card reader
SD Cards - - ✔✔✔Very small storage capacity
Various 'enhancements' to the standards - resulting in potential compatibility issues
USBs - ✔✔✔Small flash memory devices
USB + - ✔✔✔Extremely portable device
Compatible with most computer systems
USB - - ✔✔✔Storage capacity is low
Only finite number of writes
Small - easily lost
Optical Disks - ✔✔✔CDs/DVDs. Used for software, music and movies
Optical Disks + - ✔✔✔Small and portable
@pg. 1
, Information Technology (grade11& 12) 2025
A lot of devices have built in capability
Optical Disks - - ✔✔✔Stability of writable media can be questionable
Fragile and easy to damage
Magnetic Tape - ✔✔✔Used for large data backups
Magnetic Tape + - ✔✔✔Very large storage capacity
Very cheap
Magnetic Tape - - ✔✔✔Data is accessed serially which is slow
Requires specialist equipment
Real Time Operating Systems - ✔✔✔Provides fast response. Best used where inputs must be processed and
responded to immediately, like traffic light and air traffic control.
Single User Single Task OS - ✔✔✔One user can use the system at a time, and one application can run at a
time. Requires fewer resources.
Single User Multitasking OS - ✔✔✔One user can use the system at a time, but many applications can run
simultaneously.
Multi User Operating System - ✔✔✔Many users can use the system at the same time, and can run many
applications simultaneously. (Cloud Computing)
Factors Affecting Performance - ✔✔✔Slow hard-disk read/write (fragmentation)
Number of Cires
Limited CPU speed
Limited RAM
@pg. 2
, Information Technology (grade11& 12) 2025
Viruses/Worms/Spyware
Roles of Operating Systems - ✔✔✔Networking
Security
Memory Management
Multitasking
Device Drivers
Personal Computers - ✔✔✔Small, inexpensive computers for use by individual users.
Mobile Devices - ✔✔✔Smartphones and tablets are made with portability in mind to give people computer
and internet access whilst on the go.
Servers - ✔✔✔Powerful computers that provide services to other computers connected to a network.
Entertainment Systems - ✔✔✔Devices for watching TV, listening to music or playing video games.
Digital Camera - ✔✔✔Capture images and videos digitally using an image sensor and store them as digital
data.
Navigation Systems - ✔✔✔Devices that use GPS (Global Positioning Satellite) receiver to locate the user's
position on a digital map.
Communication Devices/Systems - ✔✔✔Devices that send and receive analogue or digital data to and from
another device.
Data Capture and Collection Systems - ✔✔✔Devices that collect and input data through automatic systems
rather than direct data entry.
@pg. 3
Summary Information Technology Grade 12 & 11 Theory
Revised question and approved answers
Multifunctional Devices - ✔✔✔Devices that can perform multiple functions.
SD cards - ✔✔✔Small flash memory cards that are commonly used for storage in digital cameras and some
smartphones
SD Cards + - ✔✔✔Very small and portable
Easy to transfer between devices with SD card reader
SD Cards - - ✔✔✔Very small storage capacity
Various 'enhancements' to the standards - resulting in potential compatibility issues
USBs - ✔✔✔Small flash memory devices
USB + - ✔✔✔Extremely portable device
Compatible with most computer systems
USB - - ✔✔✔Storage capacity is low
Only finite number of writes
Small - easily lost
Optical Disks - ✔✔✔CDs/DVDs. Used for software, music and movies
Optical Disks + - ✔✔✔Small and portable
@pg. 1
, Information Technology (grade11& 12) 2025
A lot of devices have built in capability
Optical Disks - - ✔✔✔Stability of writable media can be questionable
Fragile and easy to damage
Magnetic Tape - ✔✔✔Used for large data backups
Magnetic Tape + - ✔✔✔Very large storage capacity
Very cheap
Magnetic Tape - - ✔✔✔Data is accessed serially which is slow
Requires specialist equipment
Real Time Operating Systems - ✔✔✔Provides fast response. Best used where inputs must be processed and
responded to immediately, like traffic light and air traffic control.
Single User Single Task OS - ✔✔✔One user can use the system at a time, and one application can run at a
time. Requires fewer resources.
Single User Multitasking OS - ✔✔✔One user can use the system at a time, but many applications can run
simultaneously.
Multi User Operating System - ✔✔✔Many users can use the system at the same time, and can run many
applications simultaneously. (Cloud Computing)
Factors Affecting Performance - ✔✔✔Slow hard-disk read/write (fragmentation)
Number of Cires
Limited CPU speed
Limited RAM
@pg. 2
, Information Technology (grade11& 12) 2025
Viruses/Worms/Spyware
Roles of Operating Systems - ✔✔✔Networking
Security
Memory Management
Multitasking
Device Drivers
Personal Computers - ✔✔✔Small, inexpensive computers for use by individual users.
Mobile Devices - ✔✔✔Smartphones and tablets are made with portability in mind to give people computer
and internet access whilst on the go.
Servers - ✔✔✔Powerful computers that provide services to other computers connected to a network.
Entertainment Systems - ✔✔✔Devices for watching TV, listening to music or playing video games.
Digital Camera - ✔✔✔Capture images and videos digitally using an image sensor and store them as digital
data.
Navigation Systems - ✔✔✔Devices that use GPS (Global Positioning Satellite) receiver to locate the user's
position on a digital map.
Communication Devices/Systems - ✔✔✔Devices that send and receive analogue or digital data to and from
another device.
Data Capture and Collection Systems - ✔✔✔Devices that collect and input data through automatic systems
rather than direct data entry.
@pg. 3
