Computing

Computing

1. Cloud Storage - Cloud computing is where data is saved on external servers instead of the user's hard drive. The external servers are called HOSTS and are owned by a HOSTING COMPANY. Some well-known examples are Dropbox, Microsoft D and Google Cloud. Cloud users can access software, data and storage provided by their hosting company. Users usually access the cloud through a web browser or mobile app - they do not directly access the servers.

   • Benefits of Cloud Computing
     • Cost - You only have to pay for the storage that you use. You do not have to provide and maintain the hardware.
     • Availability - Data can be available anywhere in the world where there is an interest connection.
   • Drawbacks of Cloud Storage
     • Reliability - It depends on how reliable the host is to access your data.
     • Software - The company may not be using the latest, fastest version.
     • Security - You have no control over the files stored and you have to trust the company to keep them safe.
     • Potential Low Performance - The speed of accessing the data might be slower than using installed software.

2. Ubiquitous Computing - Ubiquitous means 'existing everywhere'. Ubiquitos computing is where processors are embedded into everyday objects.

   • Clothing - processors embedded into running kit to measure distance, heartbeat, etc. of the wearer.
   • Vehicles - built-in GPS/Sat-Nav to direct the driver.
   • Buildings - Processors in fire alarms to detect smoke, set off alarms and contacts fire brigade.
   • People - pacemakers fitted to regulate heartbeats.
   • Appliances - processors in washing machines to monitor load size, amount of water, different programmes etc.

3. Questions

   • Explain how data is stored in the cloud computing. (2 marks)
   • Explain how data is stored in installed software. (2 marks)