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Explain the Types of System Calls
The major types of system calls are like this:
a. Process Control: These types of system calls are employed to control the processes. Some instances are end, execute, create process, abort, load, terminate process etc.
b. File Management: These types of system calls are employed to manage files. Some instances are read, Create file, open, delete file, close, write etc.
c. Device Management: These types of system calls are employed to manage devices. Some instances are Request device, read, release device, write, get device attributes etc.
List the task regions in the Spiral model. Customer communication - In this region it is suggested to set up customer communication. Planning - All planning activities
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Determine the reasons for Poor response time Process busy or High I/O rates or High paging rates
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