IT Theory Part A Flashcards
revision for exam
What are the 4 types of user interfaces
Graphical user interface
Menu based interface
Command line
Adaptive interface
3 Advantages of a graphical interface
Intuitive and easy to learn/ recognising icons
Increases efficiency as you can display multiple programs simultaneously
Easier to modify
2 disadvantages of A GUI
Use a lot of memory and processing power
slower than a command line interface, can be irritating for an experienced user
2 advantages of a CLI
Experienced users find it easier to complete tasks
requires less memory and processing power to run
2 disadvantages of a CLI
Language of the commands may be a barrier
can’t access it on devices that use on screen keyboards
Firewalls
prevent unauthorised access by monitoring and blocking traffic that is suspicious
4 areas of emerging technology
Artificial intelligence
Biometrics
Robotics
Virtual Reality
2 Advantages of biometrics
It is unique so it can’t be copied or passed on to someone else
It is part of a person’s physical appearance so you don’t have to carry your card
5 factors of emerging technology
User Experience
implementation
Costs
Security
Compatibility
Modern technology that is impacting businesses
Augmented reality
Internet of things
3D printing
4 main storage devices
Hard Drive disk ( HDD)
Solid State Drive (SSD)
SD Cards
USB memory sticks
Characteristics of a HDD
has large storage capacity
low cost per byte
Very reliable
characteristics of a SSD
Reads data very fast
has a lower power consumption
Very reliable
2 limitations of a SSD
More expensive than a HDD
Lower storage capacity
2 Advantages of an open source
Bugs in the code are spotted and corrected quickly
on going support will be free as the user pay for it
2 disadvantages of a open source
must be compatible with existing application software
may not be many features included which make it harder to perform specific tasks
4 Peripheral input devices
Webcam
Sensor
Microphone
Scanner
4 peripheral Output devices
Projector
Monitor
Plotter
Printer
3 advantages of removable storage
provides data security as the devices come with encryption
Easy to use because most devices have plug and play feature
doesn’t require internet so you can access it anywhere
2 Accessibility devices for blind people
Adapted Keyboard
Large Monitor
2 Automatic processes
Biometric readers read finger prints or hand prints for personal identification
Optical Mark recognition automatically reads a form and inputs data
Uses of application software
Productivity software
Graphics Software
Communications software
factors to consider when choosing software
Ease of use
Reliability
Capability
what is proprietary software
The source is privately owned by the company and user pay to buy or subscribe to it
what is Open Source Software
source code is available to read and modify
What are the Implications of File types
Compatibility - some file types only work with certain software
Quality- Different file types provide varying quality levels
3 advantage of JPEG
-File size will be reduced
- it will download and upload the image or email faster
- image will be compressed
2 Advantages of Proprietary Software
- comes with training facilities and support
- it has more features than an open source software
2 disadvantages of Proprietary Software
- Company may be slow to update the software and fix bugs
- is generic so your not able to customize it
utilities that help improve the performance of a PC
Registry cleaners remove old registry entries can help improve the performance
System profilers break down the system and decides whether the system needs upgrading
