Computer OS
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what is operating system? | 1) Part of computer system (software) 2) Manages all hardware and software. 3) Controls every file, device, section of main memory and nanosecond of processing time. 4) Controls who can use the system and Controls how system is used.
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| What is User Command Interface? | Provides user communication
User issues commands to operating system.
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| what is network manager? | Convenient way for users to share resources, Retains user access control. Hardware (CPUs, memory areas, printers, tape drives, modems, and disk drives), Software (compilers, application programs, and data files)
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| what is main memory management? | In charge of main memory
Random Access Memory (RAM)
Responsibilities include:
Preserving space in main memory occupied by operating system
Checking validity and legality of memory space request
Setting up memory tracking table.
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| main memory management part 2 | Tracks usage of memory by sections
Needed in multiuser environment
Deallocating memory to reclaim it
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| what is processor management? | In charge of allocating Central Processing Unit (CPU)
Tracks process status
An instance of program execution
Two levels of responsibility:
Handle jobs as they enter the system, Handled by Job Scheduler, Manage each process within those jobs
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| processor management part2 | Manage each process within those jobs
Handled by Process Scheduler
Manage each process within those jobs
Handled by Process Scheduler
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| what is device management? | In charge of monitoring all resources
Devices, channels, and control units
Responsibilities include:
Choosing most efficient resource allocation method
Printers, ports, disk drives, etc.
Based on scheduling policy;
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| device management part 2 | Allocating the device
Starting device operation
Deallocating the device
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