GCSE Knowledge Check
Advanced Searching, Mobile Devices, Data
Advanced Searching
Advanced Search
Advanced searching allows you to add extra information or detail into the search engine in order to refine the search and get better results
Boolean Searching
This is where key words such as AND and OR are used to refine a search, for example, 'fish and chips' would only bring up items with both fish and chips in, 'fish or chips' would only bring up items with either fish or chips in.
Exact Phrase
'Exact phrase' means that an article will only appear if it has the exact wording that was searched for.
Mobile Devices
QR Code
Quick reference code. This scans the code so that a secret phrase or word will appear. They can also be links to websites.
Internet connectivity from Mobile phones
There are different ways to get internet connectivity.
-GPS (satellite navigation).-3G.
Infra- Red Data Transfer
Disadvantages are that it doesn't travel through objects including walls, and only travels a certain distance. The transfer can also be very slow.
Data
Bandwidth
Bandwidth is the amount of data that can be transferred. A bigger bandwidth allows more data to transferred, at a faster pace.
Latency
Latency is the amount of drag or delay between sound and picture. For example on skype video call and facetime.