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多选题
Which three JVM options would you add to investigate performance issues in a Hot-Spot JVM?（）
A
-xx:+PrintGCDetails
B
-xx:+PrintGCTimeStamps
C
-xx:+HandlePromotionFailure
D
-verbose:gc
E
-server
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Which command （without options） would you use to display how much space is available on all mounted partitions？（）
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以下关于JVM的叙述，哪项正确？（） A、JVM运行于操作系统之上，它依赖于操作系统B、JVM运行于操作系统之上，它与操作系统无关C、JVM支持Java程序运行，它能够直接运行Java字节码文件D、JVM支持Java程序运行，它能够直接运行Java源代码文件
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Which three statements concerning the use of the java.io.Serializable interface are true？（）A、Objects from classes that use aggregation cannot be serialized.B、An object serialized on one JVM can be successfully deserialized on a different JVM.C、The values in fields with the volatile modifier will NOT survive serialization and deserialization.D、The values in fields with the transient modifier will NOT survive serialization and deserialization.E、It is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable.
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Which three JVM options would you add to investigate performance issues in a Hot-Spot JVM?（）A、-xx:+PrintGCDetailsB、-xx:+PrintGCTimeStamps C、-xx:+HandlePromotionFailureD、-verbose:gcE、-server
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Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to analyzeimpact on the performance of SQL statements.（）A、Change in the Oracle Database versionB、Change in your network infrastructureC、Change in the hardware configuration of the database serverD、Migration of database storage from non-ASM to ASM storageE、Database and operating system upgrade
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多选题You want to capture WebLogic internal events correlated with JVM events for viewing offline. What three actions must you take to enable this within WebLogic?（）ARun WebLogic in a JRockit JVM and ensure the Flight Recorder is enabled.BConfigure the WebLogic Diagnostic Framework Event Volume to Low, Medium, or High depending on the type of events you want to capture.CConfigure the WebLogic Diagnostic Framework bridge to send events to the JRockit Flight Recording.DTake a dump from the default recording or create a new recording for the time period you want to capture.
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多选题A common approach to solve application performance issues is to add more hardware. Which two reasons describe why this alone does not always solve performance problems?（）AThere may be a bottleneck in the application that additional hardware would not solve.BAdding more hardware is costly and time consuming.CAdding hardware at the application layer may place additional load on an already overloaded database, network appliance, or storage system.DAdding more hardware may introduce new configuration requirements that need to be tested.
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单选题WebSphere Application Server supports performance data collection using the Performance Monitoring Infrastructure （PMI）. Which tool supports PMI and would be best to analyze the WebSphere Commerce runtime EJB， JVM and thread pool stats？（）A
WebSphere Commerce AnalyzerB
Tivoli Performance Viewer.C
Tivoli Web Site Analyzer.D
DB2 Intelligent Miner for Data.
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多选题Which three concerning the use of the java.io.Serializable interface are true？（）AObjects from classes that use aggregation cannot be serialized.BArt object serialized on one JVM can be successfully deserialized on a different JVM.CThe values in fields with the volatile modifier will NOT survive serialization anddeserialization.DThe values in fields with the transient modifier will NOT survive serialization anddeserialization.EIt is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable.
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多选题When your WebLogic Server solution needs to be scaled out with additional capacity and you Don’t want to add additional hardware, which three techniques should you us?（）AAssign more than one managed server to a physical hardware that allows better CPU utilizationBAssign more than one application to one managed server to better utilize threads within a single JVM processCAssign the same application to more than one managed server to load balance requests between serversDAssign the same heap size to the managed server across the cluster for easier control of memory footprintECreate a virtualized environment with hypervisor for an easier solution
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多选题What are three functions of a WebSphere Node Agent?（）Amonitors performanceBmanages JVM memoryCserves J2EE applicationsDmanages the deployment managerEmanages configuration synchronizationFroutes administrative requests to servers
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多选题You plan to take a closed database backup using operating system commands. Which three SHUTDOWN options are appropriate for this type of backup？（）AABORTBNORMALCIMMEDIATEDTRANSACTIONAL
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多选题You notice a performance change in your production Oracle database and you want to know which change has made this performance difference. You generate the Compare Period Automatic Database Diagnostic Monitor (ADDM) report to further investigation. Which three findings would you get from the report?（）AIt detects any configuration change that caused a performance difference in both time periods.BIt identifies any workload change that caused a performance difference in both time periods.CIt detects the top wait events causing performance degradation.DIt shows the resource usage for CPU, memory, and I/O in both time periods.EIt shows the difference in the size of memory pools in both time periods.FIt gives information about statistics collection in both time periods.
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多选题Which three JVM options would you add to investigate performance issues in a Hot-Spot JVM?（）A-xx:+PrintGCDetailsB-xx:+PrintGCTimeStampsC-xx:+HandlePromotionFailureD-verbose:gcE-server
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多选题Oracle JRockit JVM uses -Xns option to set nursery size when the generational garbage collection mode is used. Which two JVM properties are affected by changing its size ？（）Acompaction ratio limitBgarbage collection frequencyCgarbage collection timesDfragmentation heap size
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多选题Which three statements concerning the use of the java.io.Serializable interface are true？（）AObjects from classes that use aggregation cannot be serialized.BAn object serialized on one JVM can be successfully deserialized on a different JVM.CThe values in fields with the volatile modifier will NOT survive serialization and deserialization.DThe values in fields with the transient modifier will NOT survive serialization and deserialization.EIt is legal to serialize an object of a type that has a supertype that does NOT implement java.io.Serializable.
考题
单选题下列关于JDK、JRE和JVM关系的描述中，正确的是（）.A
JDK中包含了JRE，JVM中包含了JRE。B
JRE中包含了JDK，JDK中包含了JVM。C
JRE中包含了JDK，JVM中包含了JRE。D
JDK中包含了JRE，JRE中包含了JVM。
考题
多选题Identify three scenarios in which you would recommend the use of SQL Performance Analyzer to analyzeimpact on the performance of SQL statements.（）AChange in the Oracle Database versionBChange in your network infrastructureCChange in the hardware configuration of the database serverDMigration of database storage from non-ASM to ASM storageEDatabase and operating system upgrade
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