多选题Which two statements are true?（）AIt is possible for more than two threads to deadlock at once.BThe JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.CDeadlocked threads release once their sleep() method's sleep du

题目
多选题
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().

相似考题

1.Which two are true?()A.A finalizer may NOT be invoked explicitly.B.The finalize method declared in class Object takes no action.C.super.finalize（）is called implicitly by any over riding finalize method.D.The finalize method for a given objec twill be called no more than once by the garbage collector.E.The order in which finalize will be called on two objects is based on the order in which the two objects became finalizable.

2.Which two statements are true about hierarchical architecture? ()(Choose two.)A. You can assign a logical interface to multiple zones.B. You cannot assign a logical interface to multiple zones.C. You can assign a logical interface to multiple routing instances.D. You cannot assign a logical interface to multiple routing instances.

3.A double male coupling is one that ______.A.has left hand twistB.has inside threads on both endsC.has outside threads on both endsD.takes two men to operate

4.Which two scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object?()A.When using versions of Java technology earlier than 5.0.B.When sharing a StringBuffer among multiple threads.C.When using the java.io class StringBufferInputStream.D.When you plan to reuse the StringBuffer to build more than one string.

参考答案和解析
正确答案： F,E
解析： 暂无解析
更多“多选题Which two statements are true?（）AIt is possible for more than two threads to deadlock at once.BThe JVM implementation guarantees that multiple threads cannot enter into a deadlocked state.CDeadlocked threads release once their sleep() method's sleep du”相关问题

  • 第1题：

    public class Threads2 implements Runnable {  public void nun（） {  System.out.println（”run.”）；  throw new RuntimeException（”Problem”）；  }  public static void main（String[] args） {  Thread t = new Thread（new Threads2（））；  t.start（）；  System.out.println（”End of method.”）；  }  }  Which two can be results？（）

    • A、 java.lang.RuntimeException： Problem
    • B、 run.    java.lang.RuntimeException： Problem
    • C、 End of method.    java.lang.RuntimeException： Problem
    • D、 End of method.      run.      java.lang.RuntimeException： Problem
    • E、 run.    java.lang.RuntimeException： Problem     End of method.

    正确答案:D,E

  • 第2题：

    Which of the following best describes Simultaneous Multi-threading （SMT）？（）

    • A、A POWER5 microprocessor feature that allocates two processors to each application
    • B、A Workload Manager feature that allows two processing threads to be executing on a single processor
    • C、An AIX v5.2 feature that allows two processing threads to be executing on a single processor concurrently
    • D、A POWER5 microprocessor feature that allows two processing threads to be executing on a single processor concurrently

    正确答案:D

  • 第3题：

    Which two scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object？（）

    • A、When using versions of Java technology earlier than 5.0.
    • B、When sharing a StringBuffer among multiple threads.
    • C、When using the java.io class StringBufferInputStream.
    • D、When you plan to reuse the StringBuffer to build more than one string.

    正确答案:A,B

  • 第4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().

    正确答案:A,F

  • 第5题：

    Which statement is true？（）

    • A、A class’s finalize（） method CANNOT be invoked explicitly.
    • B、super.finalize（） is called implicitly by any overriding finalize（） method.
    • C、The finalize（） method for a given object is called no more than once by the garbage collector.
    • D、The order in which finalize（） is called on two objects is based on the order in which the two objects became finalizable.

    正确答案:C

  • 第6题：

    Which of the following BEST describes the function of hyperthreading support within a CPU?（）

    • A、Allows the core to create a separate space to process threads
    • B、Allows the processor to handle multiple threads per core
    • C、Allows the core to shift to a higher clock speed based on thread count
    • D、Allows the processor to reject certain threads to increase performance

    正确答案:B

  • 第7题：

    多选题
    Which two statements are true about hierarchical architecture? （）(Choose two.)
    A

    You can assign a logical interface to multiple zones.

    B

    You cannot assign a logical interface to multiple zones.

    C

    You can assign a logical interface to multiple routing instances.

    D

    You cannot assign a logical interface to multiple routing instances.


    正确答案： B,C
    解析： 暂无解析

  • 第8题：

    多选题
    public class Threads2 implements Runnable {  public void nun（） {  System.out.println（”run.”）；  throw new RuntimeException（”Problem”）；  }  public static void main（String[] args） {  Thread t = new Thread（new Threads2（））；  t.start（）；  System.out.println（”End of method.”）；  }  }  Which two can be results？（）
    A

    java.lang.RuntimeException： Problem

    B

    run.    java.lang.RuntimeException： Problem

    C

    End of method.    java.lang.RuntimeException： Problem

    D

    End of method.      run.      java.lang.RuntimeException： Problem

    E

    run.    java.lang.RuntimeException： Problem     End of method.


    正确答案： C,A
    解析： 暂无解析

  • 第9题：

    单选题
    Which statement is true？（）
    A

    A class’s finalize（） method CANNOT be invoked explicitly.

    B

    super.finalize（） is called implicitly by any overriding finalize（） method.

    C

    The finalize（） method for a given object is called no more than once by the garbage collector.

    D

    The order in which finalize（） is called on two objects is based on the order in which the two objects became finalizable.


    正确答案： C
    解析： 暂无解析

  • 第10题：

    多选题
    Which two statements are true about standard database auditing（）
    A

    DDL statements can be audited.

    B

    Statements that refer to stand-alone procedure can be audited.

    C

    Operations by the users logged on as SYSDBA cannot be audited.

    D

    Only one audit record is ever created for a session per audited statement even though it is executedmore than once.


    正确答案： A,D
    解析： 暂无解析

  • 第11题：

    单选题
    Which of the following best describes Simultaneous Multi-threading （SMT）？（）
    A

    A POWER5 microprocessor feature that allocates two processors to each application

    B

    A Workload Manager feature that allows two processing threads to be executing on a single processor

    C

    An AIX v5.2 feature that allows two processing threads to be executing on a single processor concurrently

    D

    A POWER5 microprocessor feature that allows two processing threads to be executing on a single processor concurrently


    正确答案： B
    解析： 暂无解析

  • 第12题：

    多选题
    Which two statements are true about the primary key constraint in a table？ （）
    A

    It is not possible to disable the primary key constraint.

    B

    It is possible to have more than one primary key constraint in a single table.

    C

    The primary key constraint can be referred by only one foreign key constraint.

    D

    The primary key constraint can be imposed by combining more than one column.

    E

    The non-deferrable primary key constraint creates an unique index on the primary key column if it is not already indexed.


    正确答案： D,B
    解析： 暂无解析

  • 第13题：

    Which two of statements are true？（）

    • A、It is possible to synchronize static methods.
    • B、When a thread has yielded as a result of yield（）， it releases its locks.
    • C、When a thread is sleeping as a result of sleep（）， it releases its locks.
    • D、The Object.wait（） method can be invoked only from a synchronized context.
    • E、The Thread.sleep（） method can be invoked only from a synchronized context.
    • F、When the thread scheduler receives a notify（） request， and notifies a thread， that thread immediately releases its lock.

    正确答案:A,D

  • 第14题：

    Which two statements are true about hierarchical architecture? （）(Choose two.)

    • A、You can assign a logical interface to multiple zones.
    • B、You cannot assign a logical interface to multiple zones.
    • C、You can assign a logical interface to multiple routing instances.
    • D、You cannot assign a logical interface to multiple routing instances.

    正确答案:B,D

  • 第15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（）.

    正确答案:A,F

  • 第16题：

    Which two statements are true regarding transactions in an Oracle database（）

    • A、Multiple transactions can use the same undo segment.
    • B、A transaction is assigned an undo segment when it is started.
    • C、More than one transaction cannot share the same extent in the undo tablespace.
    • D、The transactions use system undo segment to store undo data if all the segments in the undo tablespaceare used.

    正确答案:A,B

  • 第17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.

    正确答案:C

  • 第18题：

    单选题
    A double male coupling is one that（）.
    A

    has left hand twist

    B

    has inside threads on both ends

    C

    has outside threads on both ends

    D

    takes two men to operate


    正确答案： A
    解析： 暂无解析

  • 第19题：

    多选题
    Which two are true？（）
    A

    A finalizer may NOT be invoked explicitly.

    B

    The finalize method declared in class Object takes no action.

    C

    super.finalize（）is called implicitly by any over riding finalize method.

    D

    The finalize method for a given objec twill be called no more than once by the garbage collector.

    E

    The order in which finalize will be called on two objects is based on the order in which the two objects became finalizable.


    正确答案： B,C
    解析： 暂无解析

  • 第20题：

    多选题
    Which two of statements are true？（）
    A

    It is possible to synchronize static methods.

    B

    When a thread has yielded as a result of yield（）， it releases its locks.

    C

    When a thread is sleeping as a result of sleep（）， it releases its locks.

    D

    The Object.wait（） method can be invoked only from a synchronized context.

    E

    The Thread.sleep（） method can be invoked only from a synchronized context.

    F

    When the thread scheduler receives a notify（） request， and notifies a thread， that thread immediately releases its lock.


    正确答案： F,A
    解析： 暂无解析

  • 第21题：

    多选题
    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().


    正确答案： B,F
    解析： 暂无解析

  • 第22题：

    多选题
    Which two scenarios are NOT safe to replace a StringBuffer object with a StringBuilder object?（）
    A

    When using versions of Java technology earlier than 5.0.

    B

    When sharing a StringBuffer among multiple threads.

    C

    When using the java.io class StringBufferInputStream.

    D

    When you plan to reuse the StringBuffer to build more than one string.


    正确答案： A,B
    解析： 暂无解析

  • 第23题：

    单选题
    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.


    正确答案： B
    解析： 暂无解析

  • 第24题：

    多选题
    Which two statements are true about the duplexing of the backups taken by RMAN? （）(Choose two.)
    A

    It's only supported for the backups performed on the tape

    B

    It is not supported for backup operations that produce image copies

    C

    Duplex backups need a parallelism for the device to be equal to number of copies

    D

    Duplex backups can be performed to either disk or tape, but cannot be performed on tape and disk simultaneously


    正确答案： B,D
    解析： 暂无解析

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