Quiz 4 2013-10-21

1. Memory-mapped Files Mapped files allow a program to access file data as if it were: In memory On disk In the page file On tape a) In memory

2. Page Faults In Windows soft and hard page faults are distinguished. Which one of the following statements is true? Soft page faults do not require access to secondary storage Hard page faults will always be satisfied by reading from a page file Soft page faults will never happen in SMP systems Soft page faults will result in working set trimming for other processes a) Soft page faults do not require access to secondary storage

3. Windows System Calls The primary Windows API function to read from a device is ReadDevice() ReadFile() DeviceQuery() DeviceReadData() b) ReadFile()

4. I/O System Structuring HAL is an acronym for: Hardware Analysis Level Host Adapter Layer Hardware Abstraction Layer Highly Abstracted Logic c) Hardware Abstraction Layer

5. I/O Manager The Windows I/O manager operates in: Kernel mode User mode Both a) Kernel mode

6. I/O System Operation The Windows I/O system operates: Always synchronously Always asynchronously Depending on the installed drivers b) Always asynchronously

7. Device Drivers What kind of driver detects the presence of a hardware device in Windows? Bus driver Cab driver Plug-and-Play driver System driver a) Bus driver

8. Layered Drivers Windows filter drivers Do not talk to hardware Can be installed dynamically May generate additional IRPs All of the above d) All of the above

9. Driver Verifier The driver verifier: Fixes buggy drivers Catches driver errors Prevents system crash after driver error Analyzes driver source code for errors b) Catches driver errors

10. Power Management Which of the following is not a system power state: Standby Hibernate On Battery d) Battery