1. Unit OS2: Operating System Principles
2.5. Quiz
Windows Operating System Internals - by David A. Solomon and Mark E. Russinovich with Andreas Polze

2. Copyright Notice © 2000-2005 David A. Solomon and Mark Russinovich
These materials are part of the Windows Operating System Internals Curriculum Development Kit, developed by David A. Solomon and Mark E. Russinovich with Andreas Polze
Microsoft has licensed these materials from David Solomon Expert Seminars, Inc. for distribution to academic organizations solely for use in academic environments (and not for commercial use)

3. Windows OS Design Goals
The design of Windows is closely related to a number of initial design goals. Which one was not among them?
Portability
Seamless networking support
Efficiency
(hard) realtime
d) (hard) realtime

4. OS Structuring
The Separation of OS functionality in kernel/user-mode components has the following goals:
Increasing OS efficiency
Protection of concurrent activities of different users against each other
Protection of file system consistency
b) Protection of concurrent activities of different users against each other

5. Subsystems
Which one of the following subsystems does not exist in the Windows operating system family?
WIN32
OS/2
POSIX
VMS
d) VMS

6. Roots of Windows a) VMS b) MS-DOS c) IBM OS/360 d) Unix
Windows has its roots in a number of operating systems. Which OS did not contribute to Windows?
a) VMS
b) MS-DOS
c) IBM OS/360
d) Unix
d) IBM OS/360

7. Similar or identical?
Client and Server versions of the Windows OS differ in the following:
a) Kernel implementation
b) Maximum size of the file system
c) Default quantum length used for CPU scheduling
d) Maximum number of processes
c) Default quantum length used for CPU scheduling

8. Local System Account
What are the restrictions applicable to services started by the Windows Service Controller Manager running under the local system account?
No registry access
No access to network volumes
No access to devices except floppy and mouse
No access to the file system
b) No access to network volumes

9. Windows - supported Hardware
During its evolution, Windows has been ported to a number of CPUs. Which processor architecture has never been supported by Windows?
Intel 80486
Motorola PowerPC
DEC Alpha AXP
SUN Sparc II
MIPS R4000
d) SUN Sparc II

10. Processes in Windows
Which of the following does a process not contain?
A private address space
A set of open resources
One or more threads
A hardware context
d) A hardware context

11. Thread concept What is a thread? Component of most fabrics
Execution context within a process
Subroutine in a program
Main routine in a program
b) Execution context within a process

12. Address space
What is the default size of the user address space in 32bit Windows?
1 gigabyte
2 gigabytes
3 gigabytes
4 gigabytes
b) 2 gigabytes

13. Protection
A user program in Windows can corrupt operating system memory?
True
False
b) False

14. Protection Kernel mode is used to protect a process from:
Corrupting operating system memory
Corrupting another process’ memory
Being corrupted by the operating system
Being corrupted by another process
a) Corrupting operating system memory

15. Operating System Architecture
Windows is a microkernel-based OS design
True
False
b) False

16. Microkernel Windows is not a true microkernel because:
The kernel is more than 100kb in size
It does not run on handheld devices
It is not based on Mach
All kernel mode components share the same address space
d) Kernel mode components share the same address space

17. Hardware support & portability
How many CPU architectures does Windows 2000 support?
One
Two
Three
Four
a) One

18. Multiprocessing Windows’ multiprocessor support is called: Parallel
Mirrored
Symmetric
Asymmetric
c) Symmetric

19. Subsystem support
Applications call native Windows system calls directly
True
False
b) False

20. Subsystems Which subsystem provides the most services? MS-DOS Win32
POSIX
OS/2
b) Win32

21. Subsystem functionality
What do environment subsystems NOT do?
Interface to native Windows system calls
Define process & file system semantics
Service interrupts
All of the above
c) Service interrupts

22. Accessing Windows functionality
Which dynamic link library (DLL) is the interface to the native Windows API?
NTDLL.DLL
Kernel32.dll
NtNative.dll
NtOSkrnl.exe

23. Windows subsystem implementation
The Windows subsystem is partially implemented as device driver
True since Windows XP
False
True since Windows NT4
c) True since Windows NT4

24. Kernel versions
How many versions of NtOSkrnl.exe in 32-bit Windows are there? 2 4 6 5
c) 6

25. Checked build What is the purpose of a checked build?
To aid in debugging device drivers
For performance testing
To check for network problems
To debug multiprocessor issues
a) To aid in debugging device drivers

26. Windows kernel What is the role of the Windows kernel?
Abstract differences among CPU architectures
Provide low level synchronization primitives
Perform thread scheduling decisions
All of the above
d) All of the above

27. Hardware Abstraction Layer
What is the role of the HAL?
Prevent drivers from accessing hardware directly
Make all CPUs look the same to device drivers
Provide a portable interface to the motherboard
Provide access to the I/O system bus
c) Provide a portable interface to the motherboard