Operating systems

Operating systems

1. role of the operating system in managing resources:

   • Manages input and output devices by communicating
     • Output devices, sends output data to device
     • Input devices, recieves input data from device
   • Manages backing store
     • Ensures that data is stored and retrieved correctly
     • Creates and maintains filling system such as FAT or NTFS
   • Manages memory RAM
     • Ensures program and data do not corrupt each other
     • Ensures all program and data are stored in correct places
   • Manages processes
     • Ensures different processes can utilise CPU and do not interfere with each other or crash
     • On multi-tasking, it ensures that all programs run simultaneously

2. the role of the operating system in providing an interface between the user and the hardware

3. Explain the hierarchical structure of a directory

   • Storage space on disc is divided into directories
   • Every disc, when formatted, has a root directory.
   • When we save work to C:\ we are saving it in the root directory of drive C. A directory created inside another directory is called a subdirectory.
     • This builds a hierarchicalstructure

4. the software that supports a computer's basic functions, such as scheduling tasks and controlling peripherals.

   • Provides users with an interface (GUI)

5. Manages security

6. Application software - a set of one or more programs designed to carry out operations for a specific task

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