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8 Cards in this Set
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- Back
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UNIX supports preemptive multitasking, what does that mean?
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It means the kernel can preempt a process when its time expires
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List the segments of the virtual address space:
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- The text segment
- The data segment - The stack - The heap |
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At runtime, what converts virtual addresses to nonconflicting physical memory locations using a set of address translation maps?
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Memory Management Unit (MMU)
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In reference to a process, what is context?
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Contexts represents the entire environment avaialble to a process while it is running. This includes the address space, status of hardware registers, and the information maintained in the process table.
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When the kernel saves the process context of one process and moves that process out of the CPU to make room for another process, is known as what?
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Context Switch
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List the important attributes of the UNIX process table:
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- The PID and PPID
- The state of the process - The real UID and GID - The effective UID and GID - The file descriptor table - The file creation mask - CPU usage information - The pending signals mask - The signal disposition table |
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What is the pending signals mask?
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This is the lis of signals pending against the process.
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What is the signal disposition table?
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It specifies the action to take when the process recieves a signal
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