Unit Three Test, CSCI 423,  Introduction to Operating Systems 18-Oct-07

 1)Name and describe the role of six mid-level agents (kernel API).

 2)Define system abstraction and explain how to implement it with the LUT.

 3)Describe a Linux VFS jump table and explain how it leads to additional
   system abstractions.

 4)Contrast a program versus a process.

 5)Contrast user/kernel space versus user/kernel mode.

 6)List and define the eight categories of information held in a Linux
   process descriptor.

 7)Contrast context switching for a timesharing versus real-time OS.
   And explain how context switches set the standard for an OS.

 8)Describe, and give the tradeoffs of, the Linux services fork(),
   vfork(), and clone().

 9)Describe four ways a process gives up the CPU. And explain what
   they all have in common.

10)Describe the steps of an Interrupt Request (IRQ) bus cycle.

Bonus:
  The Wikipedia entry for real-time (http://en.wikipedia.org/wiki/Real_time)
  OSs makes a distinction between a "hard" and "soft" real-time OS.
  Please contrast the difference between these two types of OSs and
  provide two sample applications for each type of OS.