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Q. How does the distinction among kernel mode and user mode function as a rudimentary form of protection (security) system?
Answer: The distinction among kernel mode and user mode provides a rudimentary form of protection in the following manner. Certain instructions could be executed merely when the CPU is in kernel mode. Likewise hardware devices could be accessed only when the program is executing in kernel mode. Control over when disrupt could be enabled or disabled is also possible only when the CPU is in kernel mode. Therefore the CPU has very limited capability when executing in user mode thereby enforcing protection of critical resources.
Question: Introduction to Operating Systems a) Define the term ‘Operating System' and identify main functions of an operating system. b) What are the characteristics of a go
what are the objective of operating system assignment
Define Ageing Ageing is a method of enhancing the priority of process waiting in Queue for CPU allocation
Explain Chaining to Handle Collision Chaining: One easy scheme is to chain all collisions in lists attached to the suitable slot. This permits an unlimited number of collision
Virtual File System serves two important functions. 1. It divides file-system-generic operations from their execution by defining a clean VFS interface. 2. The VFS is based
Signal handling A signal is used in UNIX systems to inform a process that a particular event has occurred. 1. A signal is produced by the occurrence of a particular event.
Sir i want formulas in Memory management starting from paging till the demang paging in a easy manner for solving problems in competitive exams
Ask question #Minimum 100 difference between bounded and unbounded buffer words accepted#
Q. What is the use of system calls? Answer: System calls permit user-level processes to request services of the operating system.
Ask using a laballed diagram explaining the architecture of windows operating ststem
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