Which two classes correctly implement both the java.lang.Runnable and the java.lang.Cloneable interfaces？（）https://assets.asklib.com/images/image2/2018080113434773241.jpg

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• public class MethodOver {   public void setVar （int a， int b， float c） {   }   }   Which two overload the setVar method？（）

  A .  Private void setVar （int a， float c， int b） {} B .  Protected void setVar （int a， int b， float c） {} C .  Public int setVar （int a， float c， int b） （return a；） D .  Public int setVar （int a， int b， float c） （return a；） E .  Protected float setVar （int a， int b， float c） （return c；）

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• Given：   10. class One {   11. void foo（） { }   12. }   13. class Two extends One {   14. //insert method here   15. }   Which three methods， inserted individually at line 14， will correctly complete class Two？（）

  A .  public void foo（） { /* more code here */ } B .  private void foo（） { /* more code here */ } C .  protected void foo（） { /* more code here */ } D .  int foo（） { /* more code here */ }   E .  void foo（） { /* more code here */ }

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• public class SomeException {  } Class a：  public class a {  public void doSomething（） { }  } Class b：  public class b extends a {  public void doSomething（） throws SomeException { }  }  Which is true about the two classes？（） 

  A .  Compilation of both classes will fail. B .  Compilation of both classes will succeed. C .  Compilation of class a will fail. Compilation of class b will succeed. D .  Compilation of class a will fail. Compilation of class a will succeed.

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• public class OuterClass {  private double d1  1.0；  //insert code here   }   You need to insert an inner class declaration at line2. Which two inner class declarations are valid？（） 

  A .  static class InnerOne {  public double methoda（） {return d1；}  } B .  static class InnerOne {  static double methoda（） {return d1；} } C .  private class InnerOne {  public double methoda（） {return d1；} } D .  protected class InnerOne {  static double methoda（） {return d1；} } E .  public abstract class InnerOne {  public abstract double methoda（）；  }

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• Which two classes or interfaces provide a getSession method？（）

  A . javax.servlet.http.HttpServletRequest B . javax.servlet.http.HttpSessionContext C . javax.servlet.http.HttpServletResponse D . javax.servlet.http.HttpSessionBindingEvent E . javax.servlet.http.HttpSessionAttributeEvent

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• Which two of these parameters are used to determine a forwarding equivalence class？（）

  A . IP prefix B . Layer 2 circuit C . RSVP request from CE for bandwidth reservation D . BGP MED value

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• class A {  }  class Alpha {  private A myA = new A（）；  void dolt（ A a ） {  a = null；  }  void tryIt（） {  dolt（ myA ）；  }  }  Which two statements are correct？（）  

  A .  There are no instanced of A that will become eligible for garbage collection. B .  Explicitly setting myA to null marks that instance to be eligible for garbage collection. C .  Any call on tryIt（） causes the private instance of A to be marked for garbage collection. D .  Private instances of A become eligible for garbage collection when instances of Alpha become eligible for garbage collection.

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• Which two classes or interfaces provide a getSession method？（）

  A .  javax.servlet.http.HttpServletRequest B .  javax.servlet.http.HttpSessionContext C .  javax.servlet.http.HttpsServletResponse D .  javax.servlet.http.HttpSessionBindingEvent E .  javax.servlet.http.HttpSessionAttributeEvent

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• Given： https://assets.asklib.com/images/image2/2018080109550671577.png Which two classes use the Shape class correctly？（）

  A . public class Circle implements Shape {private int radius；} B . public abstract class Circle extends Shape {private int radius；} C . public class Circle extends Shape {private int radius；public void draw（）；} D . public abstract class Circle implements Shape { private int radius；public void draw（）；} E . public class Circle extends Shape {private int radius；public void draw（） {/* code here*/}}

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• Which two statements about forwarding equivalence class （FEC） are true？（）

  A . FEC might correspond to a destination IP subnet， but it might also correspond to any traffic class that the edge LSR considers significant. B . FEC is a group of IP packets that is forwarded over a different path， but with the same forwarding treatment. C . FEC is a group of IP packets that is forwarded over the same path， and with the same forwarding treatment. D . FEC is a group of IP packets that is forwarded over a different path， but with the different forwarding treatment. E . FEC is a group of IP packets that is forwarded over the same path， but with a different forwarding treatment

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• class One {  void foo（） {}  }  class Two extends One {   //insert method here  }  Which three methods， inserted individually at line 14， will correctly complete class Two？（）

  A .  int foo（） { /* more code here */ } B .  void foo（） { /* more code here */ } C .  public void foo（） { /* more code here */ } D .  private void foo（） { /* more code here */ } E .  protected void foo（） { /* more code here */ }

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• Which two statements are true regarding the return values of property written hashCode and equals methods from two instances of the same class？（）

  A .  If the hashCode values are different， the objects might be equal. B .  If the hashCode values are the same， the object must be equal. C .  If the hashCode values are the same， the objects might be equal. D .  If the hashCode values are different， the objects must be unequal.

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• Given that b and c refer to instances of wrapper classes， which two statements are true？（）

  A .  b.equals（b） returns true. B .  b.equals（c） returns the same result as b == c. C .  b.eqials（c） can return false even if c.equals（b） returns true. D .  b.equals（c） throws an exception if b and c are different wrapper types. E .  b.equals（c） returns false if the type of wrapper objects being compared are different.

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• class One {   public One foo（） { return this； }  }  class Two extends One {  public One foo（） { return this； }  }  class Three extends Two {   // insert method here  }  Which two methods， inserted individually， correctly complete the Three class？（）

  A .  public void foo（） { } B .  public int foo（） { return 3； } C .  public Two foo（） { return this； } D .  public One foo（） { return this； } E .  public Object foo（） { return this； }

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• Which the two are true regarding a web application class loader？（）

  A .  A web application may override the web container’s implementation classes B .  A web application running in a J2EE product may override classes in the javax.* namespace C .  A web application class loader may NOT override any classes in the java.* and javax.*  namespace D .  Resources in the WAR class directory or in any of the JAR files within the library directory may  be accessed using the J2SE semantics of getResource E .  Resources in the WAR class directory or in any of the JAR files within the library directory  cannot be accessed using the J2SE semantics of getResource

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• public class OuterClass {   private double d1 1.0；   //insert code here   }   You need to insert an inner class declaration at line2. Which two inner class declarations are valid？（）

  A .  static class InnerOne {  public double methoda（） {return d1；}  } B .  static class InnerOne {  static double methoda（） {return d1；}  } C .  private class InnerOne {  public double methoda（） {return d1；}  } D .  protected class InnerOne {  static double methoda（） {return d1；}  } E .  public abstract class InnerOne {  public abstract double methoda（）；  }

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• class A {  A（） { }  }  class B extends A {  }  Which two statements are true？（）

  A .  Class B’s constructor is public. B .  Class B’s constructor has no arguments. C .  Class B’s constructor includes a call to this（）. D .  Class B’s constructor includes a call to super（）.

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• In which two web application directories can dependent classes and libraries be located？ （）

  A .  /WEB-INF/lib as a JAR file B .  /META-INF/lib as a JAR file C .  /classes as compiled class files D .  /WEB-INF/lib as compiled class files E .  /WEB-INF/classes as compiled class files F .  /META-INF/classes as compiled class file

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• public class X {  public X aMethod（） { return this；}  }  public class Y extends X {  }  Which two methods can be added to the definition of class Y？（）

  A .  public void aMethod（） {} B .  private void aMethod（） {} C .  public void aMethod（String s） {} D .  private Y aMethod（） { return null； } E .  public X aMethod（） { return new Y（）； }

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• public class ConstOver  {   public ConstOver （int x， int y， int z） {   }  }   Which two overload the ConstOver constructor？ （）

  A . ConstOver（）{} B . Protected int ConstOver （）{} C . Private ConstOver （int z， int y， byte x） {} D . Public Object ConstOver （int x， int y， int z） {} E .  Public void ConstOver （byte x， byte y， byte z）{}

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• public class ConstOver {  public ConstOver （int x， int y， int z）  {  }  }   Which two overload the ConstOver constructor？（）   

  A .  ConstOver （ ） { } B .  Protected int ConstOver （ ） { } C .  Private ConstOver （int z， int y， byte x） { } D .  Public Object ConstOver （int x， int y， int z） { } E .  Public void ConstOver （byte x， byte y， byte z） { }

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• Which two are true regarding a web application class loader？（）

  A . A web application may override the web container’s implementation classes. B . A web application running in a J2EE product may override classes in the javax.* namespace. C . A web application class loader may NOT override any classes in the java.* and javax.* namespaces. D . Resources in the WAR class directory or in any of the JAR files within the library directory may be accessed using the J2SE semantics of getResource.

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• public class MethodOver  {  public void setVar （int a， int b， float c）  {  }  }   Which two overload the setVar method？（）  

  A .  Private void setVar （int a， float c， int b）  { } B .  Protected void setVar （int a， int b， float c） { } C .  Public int setVar （int a， float c， int b） （return a；） D .  Public int setVar （int a， int b， float c） （return a；） E .  Protected float setVar （int a， int b， float c） （return c；）

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• class A {  protected int method1（int a， int b） { return 0； }  }  Which two are valid in a class that extends class A？（） 

  A .  public int method1（int a， int b） { return 0； } B .  private int method1（int a， int b） { return 0； } C .  private int method1（int a， long b） { return 0； } D .  public short method1（int a， int b） { return 0： } E .  static protected int method1（int a， int b） { return 0； }

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• Which two are benefits of fully encapsulating a class？（）  

  A .  Performance of class methods is improved. B .  Implementation details of the class are hidden. C .  Access modifiers can be omitted on class data members. D .  Code that uses the encapsulation class can access data members directly. E .  Internal operation of the class can be modified without impacting clients of that class.

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