多选题The multithreaded agent architecture for heterogeneous services is similar to the Oracle multithreaded server architecture. The principal difference is that it used threads instead of processes.  What are thee kinds of threads that it uses？（）ATCPBTaskC

第1题：

第2题：

What is the new Oracle Shared Server?（）

• A、An improved version of multithreaded server configuration. 
• B、A connection pooling configuration where several clients are connected to the same server process. 
• C、Two more database servers, which share data by means of database links; the client software is unaware to which server it is connected. 
• D、A configuration of Real Application Cluster where the client connection is routed to the least busy instance. 

第3题：

On a POWER7 processor based server what is the minimum number of cores used by the Hypervisor to run four threads?（）

• A、1
• B、2
• C、4
• D、8

第4题：

Which of the following commands should be used to monitor the average number of threads in the scheduler’s run queue for any given interval？（）

• A、 tprof
• B、 iostat
• C、 vmstat
• D、 filemon

第5题：

A customer needs to ensure that the number of threads servicing an application does not exceed the number of database connections available to the application. What step must you take to address this situation?（）

• A、Configure a Max Threads Constraint and add your application to the list of applications for the  Constraint.
• B、Configure a Work Manager with a Maximum Threads Constraint tied to the Connection Pool and  configuration your application to use the Work Manager.
• C、Configure a Work Manager with a Minimum Threads Constraint tied to the Connection Pool and  configure your application to use the Work Manager.
• D、Configure a global MaxThreads constraint and target it to the server or clusters where your  application is deployed.
• E、Configure the startup parameter "-Dwls-maxThreads" to be the same as the number of  database connections configured.

第6题：

Which two statements are true？（）

• A、It is possible for more than two threads to deadlock at once.
• B、The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
• C、Deadlocked threads release once their sleep（） method’s sleep duration has expired.
• D、Deadlocking can occur only when the wait（）， notify（）， and notifyAll（） methods are used incorrectly.
• E、It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
• F、If a piece of code is capable of deadlocking， you cannot eliminate the possibility ofdeadlocking by insertinginvocations of Thread.yield（）.

第7题：

The direct handoff connection method to an Oracle9i Shared Server involves fewer messages than in previous releases of the multithreaded architecture. Which type of message has been eliminated？（）

• A、The initial request from the client to the listener.
• B、Messages between the dispatcher and the shared server background processes.
• C、A redirect message from the listener to the client during client connections.
• D、Round-trip messages between the listener and the shared server background processes.

第8题：

Your application uses two threads， named threadOne and threadTwo. You need to modify the code to prevent the execution of threadOne until threadTwo completes execution. What should you do？（）

• A、 Configure threadOne to run at a lower priority.
• B、 Configure threadTwo to run at a higher priority.
• C、 Use a WaitCallback delegate to synchronize the threads.
• D、 Call the Sleep method of threadOne. 
• E、 Call the SpinLock method of threadOne.

第9题：

You are designing a Windows Azure application.  Messages will be placed into a Windows Azure Queue and then processed by a worker role.  There is no requirement for adherence to the Windows Azure Service Level Agreement （SLA）.   You need to recommend an approach for concurrently processing messages while minimizing compute cost.  What should you recommend？（）

• A、 A single role instance that processes messages individually
• B、 A single role instance with multithreaded request processing
• C、 Multiple role instances that process messages individually
• D、 Multiple role instances， each with multithreaded request processing

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第14题：

Which three are direct benefits of the multiprocess, multithreaded architecture of Oracle Database 12cwhen it is enabled?（）

• A、Reduced logical I/O
• B、Reduced virtual memory utilization
• C、Improved parallel Execution performance
• D、Improved Serial Execution performance
• E、Reduced physical I/O
• F、Reduced CPU utilization

第15题：

Which of the following commands should be used to monitor the number of threads on the scheduler’s run queue for any given interval？（）

• A、 sar
• B、 pstat
• C、 iostat
• D、 filemon

第16题：

The multithreaded agent architecture for heterogeneous services is similar to the Oracle multithreaded server architecture. The principal difference is that it used threads instead of processes.  What are thee kinds of threads that it uses？（）

• A、TCP
• B、Task
• C、Monitor
• D、Dispatcher
• E、Shared Server
• F、Shutdown address

第17题：

The listener uses dynamic information about the database and instance it has received through service registration before using information statically configured. Some services such as heterogeneous services and external procedures require the use of information statically configured within listener.ora. In order to support this， which tool could be used to configure the listener statically？（）

• A、Oracle Net Manager
• B、Listener Control Utility
• C、Oracle Net Control Utility
• D、Oracle Net Configuration Assistant

第18题：

Which two statements are true?（）

• A、It is possible for more than two threads to deadlock at once.
• B、The JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.
• C、Deadlocked threads release once their sleep() method's sleep duration has expired.
• D、Deadlocking can occur only when the wait(), notify(), and notifyAll() methods are used incorrectly.
• E、It is possible for a single-threaded application to deadlock if synchronized blocks are used incorrectly.
• F、If a piece of code is capable of deadlocking, you cannot eliminate the possibility of deadlocking by inserting invocations of Thread.yield().

第19题：

Which three statements are true when the listener handles connection requests to an Oracle 12cdatabase instance with multithreaded architecture enabled In UNIX?（）

• A、Thread creation must be routed through a dispatcher process
• B、The local listener may spawn a now process and have that new process create a thread
• C、Each Oracle process runs an SCMN thread.
• D、Each multithreaded Oracle process has an SCMN thread.
• E、The local listener may pass the request to an existing process which in turn will create a thread.

第20题：

You have two processes， P1 and P2 on you computer. You notice that when you execute both the process at a time， process P2 always times out， while if you pause process P1， process P2 starts running fine. Process P1 runs in "Real Time" priority and uses twelve threads while process P1 runs in "Normal" priority and uses one thread. What should you do to solve this problem？ （）

• A、Increase the number of threads for process P2.
• B、Increase the priority for process P2.
• C、Decrease the number of threads for process P1.
• D、Decrease the priority for process P1 to ’Normal’.

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