There is no impact on performance
The overhead depends on the settings of the Performance Schema
There is an overhead for querying the Performance Schema but not for having it enabled
There is a constant overhead regardless of settings and workload
第1题：
A.Using DELETE statements, for example, DELETE FROM performance_schema.events_watis_current
B.Using the statement RESET PERFORMANCE CACHE
C.Using the statement FLUSH PERFORMANCE CACHE
D.Using TRUNCATE statements, for example, TRUNATE TABLE performance_schema.events_waits_current
E.Disabling and re-enabling all instruments
F.Restarting Mysql
第2题：
You are the administrator of a Windows Server 2003 computer named Testking1.An application on Testking1 gradually uses more and more memory until it causesTestking1 to stop responding. If you restart the application before it uses theavailable memory, there is no interruption of user services.You need to configure Testking1 to notify you when it encounters a low-memorycondition.What should you do?（）
A. Using Task Scheduler, schedule a repeating task that runs the tracert command.
B. Using Performance Logs and Alerts, configure an alert for the appropriate performance object.
C. Using System Monitor, configure the appropriate performance object to display.
D. Using Startup and Recovery Settings, configure Testking1 to send an Administrative Alert.
第3题：
(ii) Briefly discuss THREE disadvantages of using EVA? in the measurement of financial performance.
(3 marks)
第4题：
A customer has an x445 and uses the internal LSI adapter to manage two 146GB drives in the chassis. The customer is noticing performance issues when deploying a database with significant write activity on the internal drives. Should they consider using a ServeRAID-6M with 256MB of cache instead， and why or why not？（）
第5题：
Which three statements about performance analysis by SQL Performance Analyzer are true? （）
第6题：
A.A
B.B
C.C
D.D
第7题：
You have a server that runs Windows Server 2003 Service Pack 2 (SP2). The server has one hard disk that contains one volume.You need to receive a notification when the volume has less than 15 percent free disk space.What should you do? （）
A. Configure a Trace Log by using the File details system provider.
B. Configure a Trace Log by using the Disk input/output system provider.
C. Configure an Alert by using a counter from the Logical Disk performance object.
D. Configure an Alert by using a counter from the Physical Disk performance object.
第8题：
Certkiller.com is currently using a performance counter named HitCounter.You are required to increment each time a user accesses the UI classes within the application.To do this, you start by creating performance counters using the following code:GRAFIK - wird nicht für Antwort ben?tigt !!!You have to adjust the HitCounter performance counter when a hit occurs.What should you do?（）
A.
B.
C.
D.
第9题：
The application workload on your database is same between 10 a.m. and 11 a.m. on weekdays. Suddenly you observe poor performance between 10 a.m. and 11 a.m. in the middle of the week. How would you identify the changes in configuration settings， workload profile，and statistics to diagnose the possible causes of the performance degradation？（）
第10题：
What does the "allow performance information collection" button do in the Hardware Management Console （HMC） GUI？ （）