MCSA/MCSE Self-Paced Training Kit (Exam 70-270): Installing ...

23-38 Chapter 23 Implementing, Managing, Monitoring, and Troubleshooting Hardware Devices and Drivers
Objective 3.6 Answers
1. Correct Answers: B
A. Incorrect: Although 85 percent is a very high sustained value for this counter,
and the user probably could benefit from faster processors, the computer should
continue to function acceptably because there is still 15 percent idle processor
time. The average for the Interrupts per second suggests why the percent processor
time might be running so high.
B. Correct: You must establish an acceptable baseline for Interrupts per second on
a system performing nominally while under load. A generally considered acceptable
starting point is 1,000 to 2,000 interrupts per second. 6,500 interrupts per second
indicates a serious performance problem. You could further analyze the
impact of the problem by watching the % Interrupt Time counter, which measures
the percentage of the processor’s time that is consumed by handling interrupt
requests. Most likely, this problem is caused by a network adapter, although many
different hardware devices could theoretically be responsible. Try updating the
BIOS on the network adapter and the Windows XP Professional drivers for the
adapter. If that procedure does not resolve the problem, replace the adapter.
C. Incorrect: This counter measures the number of times Windows XP has to access
the paging file. If this counter were high, it would indicate that applications are
using significantly more memory than the computer has physical RAM available.
However, 1.5 is a very low count and is not indicative of a problem.
D. Incorrect: For this counter, 1.8 is an acceptable average. Because it is greater
than 1, it indicates that the computer’s processor is not handling instructions quite
as fast as it is receiving them. However, the % Processor Time counter indicates
that the computer should continue to function in an acceptable manner.
2. Correct Answers: D
A. Incorrect: Even safe mode will fail to start when you have the incorrect kernel
installed. Additionally, you cannot use hardware profiles to support both uniprocessor
and multiprocessor configurations.
B. Incorrect: This would solve the problem because Setup would detect the second
processor and install the multiprocessor kernel. However, it would also result in
the user losing his operating system settings. It would be more efficient to replace
the kernel file by using Recovery Console.
C. Incorrect: The question provides no information that should lead you to believe
the processor is not functioning correctly. Windows XP does not automatically
switch between uniprocessor and multiprocessor HALs, so the uniprocessor HAL
and kernel files need to be replaced.