Revision
AVI MP4
Advantages Provides higher quality video Widely used for streaming
Disadvantages Not used for streaming due to Must recognise both video and
its size audio in order to play
Lossy compression – reduces the size of a file but also the quality of the file
Lossless – reduces the size of a file but keeps the quality the same
Bandwidth – the rate of data packets being transferred over a network
Latency – the time delay for the data packets to transfer to its destination
Codec – a device or program that compresses data for faster transmission (Streaming)
Forums – online discussion sites
Blogs – regularly updated website used by a business to share up to date information
APSTNDP layers (Open Systems Interconnection Layers) (Application, Presentation, Session,
Transportation, Network, Data link, Physical)
PAN – Personal area network
VPN – Virtual private Network
MPLS (Multi-protocol label switching) - A way of carrying data across a network
SVC (Switched virtual circuits) - Connection between networks
PVC (Permanent virtual circuits) - Type of network connection
Topology – the shape and form of a network
GPS – Global Positioning System - uses the signals from orbiting satellites to work out the position of
the device.
MFD (Multi-functional Device) – such as a smartphone or a printer which also photocopies
AIO (All in one) – a device that is multifunctional
GUI (Graphical user interface) – The interface a user interacts with when on a device (phone,
computer)
AVI MP4
Advantages Provides higher quality video Widely used for streaming
Disadvantages Not used for streaming due to Must recognise both video and
its size audio in order to play
Lossy compression – reduces the size of a file but also the quality of the file
Lossless – reduces the size of a file but keeps the quality the same
Bandwidth – the rate of data packets being transferred over a network
Latency – the time delay for the data packets to transfer to its destination
Codec – a device or program that compresses data for faster transmission (Streaming)
Forums – online discussion sites
Blogs – regularly updated website used by a business to share up to date information
APSTNDP layers (Open Systems Interconnection Layers) (Application, Presentation, Session,
Transportation, Network, Data link, Physical)
PAN – Personal area network
VPN – Virtual private Network
MPLS (Multi-protocol label switching) - A way of carrying data across a network
SVC (Switched virtual circuits) - Connection between networks
PVC (Permanent virtual circuits) - Type of network connection
Topology – the shape and form of a network
GPS – Global Positioning System - uses the signals from orbiting satellites to work out the position of
the device.
MFD (Multi-functional Device) – such as a smartphone or a printer which also photocopies
AIO (All in one) – a device that is multifunctional
GUI (Graphical user interface) – The interface a user interacts with when on a device (phone,
computer)
