Transcription of Windows 7 - Yale University
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Windows 7 - Yale University
19. CHAPTER. Windows 7. Practice Exercises What type of operating system is Windows 7? Describe two of its major features. Answer: A 32/64 bit preemptive multitasking operating system supporting multiple users. (1) The ability automatically to repair application and operating system problems. (2) Better networking and device experience (including digital photography and video). List the design goals of Windows 7. Describe two in detail. Answer: Design goals include security, reliability, Windows and POSIX appli- cation compatibility, high performance, extensibility, portability and international support. (1) Reliability was perceived as a stringent requirement and included extensive driver verification, facilities for catching programming errors in user-level code, and a rigorous cer- tification process for third-party drivers, applications, and devices.
70 Chapter 19 Windows 7 drivers. (6) SMSS creates two processes: WINLOGON,whichbringsup the rest of the system, and CSRSS (the Win32 subsystem process). 19.4 Describe the three main architectural layers of the Windows 7 kernel. Answer: a. The HAL (Hardware Abstraction Layer) creates operating system portability by hiding hardware differences from the upper layers
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