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Objective 4.2 Identify System Bottlenecks
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Objective 4.2 Questions 1.
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You are the network administrator for a company that has recently landed a lucrative new contract and is planning to hire a number of new employees to handle the extra work. You are not sure that your database server can keep up with the increased load, so you decide to implement a plan to monitor the server for bottlenecks. As the first step in the plan, you establish a baseline by using the Performance Logs And Alerts snap-in to create a counter log that will track the values for critical counters in the Pro cessor, Memory, PhysicalDisk, and Network Interface performance objects. After estab lishing the normal operational values for the counters, what should you do next to configure the Performance console to detect a bottleneck
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A. Leave the counter log running at all times and check the values of the counters at
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regular intervals.
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B. Using System Monitor, create a graph of the same counters and configure the
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snap-in to sound an alarm when any counter value exceeds the maximum baseline value.
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C. In the Performance Logs And Alerts snap-in, create a series of alerts that send a
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message to your workstation when any baseline counter exceeds a certain value.
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D. In the Performance Logs And Alerts snap-in, create a trace log using the same
counters as the baseline.
Which of the following performance counters could you use to detect a bottleneck in a server s processor subsystem (Choose all that apply.)
A. Processor Queue Length B. Interrupts/Sec C. % User Time D. % Processor Time
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Planning, Implementing, and Maintaining Server Availability (4.0)
You are a network administrator who has been given the task of determining why the Windows Server 2003 file and print server on a particular local area network is performing poorly. You must also implement a remedy for the problem. After monitoring server performance counters using the Performance console, you have determined that the network itself is the bottleneck preventing peak performance. Which of the follow ing solutions would enable you to achieve the goal of increasing the performance level of the file and print server (Choose all that apply.)
A. Install a second network interface adapter in the server and connect it to the same
network.
B. Increase the speed of the network by replacing the 10Base-T network interface
adapters in the computers on the network and on the hub to which the computers are connected with 100Base-TX equipment.
C. Split the network into two separate LANs with an equal number of computers on
each. Then, install a second network interface adapter in the file and print server and connect the server to both LANs.
D. Replace the network interface adapter in the file and print server with a model that
has a larger memory buffer.
A server on your network is experiencing a slowdown in performance due to a bottleneck in the storage subsystem. The three hard drives in the computer are running inde pendently and are all approximately three-quarters full. Which of the following procedures would eliminate the storage bottleneck (Choose all that apply.)
A. Install a fourth hard drive in the server. B. Install a fourth hard drive in the server and move some of the data from the other
drives to the new drive, so that each drive contains approximately the same amount of data.
C. Determine which of the three drives is receiving the largest number of access
requests and replace it with a drive that has twice the capacity.
D. Install a fourth hard drive in the server and convert all four drives into a RAID
array.
Objective 4.2 Identify System Bottlenecks
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Objective 4.2 Answers 1.
Correct Answers: C
A. Incorrect: Although leaving the counter log running will collect the data needed
to detect a bottleneck, the task of monitoring and evaluating that data is the administrator s responsibility. The Performance console only collects the data; it is incapable of monitoring and evaluating the data.
B. Incorrect: Although you can monitor the values of the performance counters in
real time using System Monitor, you cannot configure the snap-in to sound alarms.
C. Correct: The Alerts feature in the Performance Logs And Alerts snap-in enables
you to specify values for particular performance counters and configure the program to perform an action, such as generating a message on a computer, if any counter reaches its specified value.
D. Incorrect: Trace logs do not monitor performance counters, so you cannot use
them to detect bottlenecks. Instead, trace logs record the particular system appli cation events that you specify.
Correct Answers: A and D
A. Correct: The Processor Queue Length counter in the System performance object
indicates the number of threads that are currently waiting for processor time. If the value of this counter increases over time, it indicates that the processor cannot keep up with the tasks demanded of it. In other words, the processor is function ing as a bottleneck and is degrading system performance.
B. Incorrect: The Interrupts/Sec counter in the Processor performance object spec
ifies the number of hardware interrupts that the processor is receiving. This counter does not measure the processor s overall load, nor can its value identify the processor as a system bottleneck.
C. Incorrect: The % User Time counter in the Processor performance object speci
fies the amount of time that the processor is spending in user mode. This counter value cannot indicate the presence of a system bottleneck.
D. Correct: The % Processor Time counter in the Processor performance object is
the primary indicator of processor activity. Consistently high values for this counter indicate that the processor is operating at peak capacity much of the time and might be a bottleneck preventing the system from achieving superior performance.
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Planning, Implementing, and Maintaining Server Availability (4.0)
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