1. Which of the following are not keywords? (A) NULL (B) implements (C) protected (D) extended (E) string   (D) & (E)   (D)   (A), (D) & (E)   (C), (D) & (E)   Hint Half-n-half Clue   2. Which of the following statements about abstract methods/classes in Java are true? 1. An abstract class cannot be instantiated. 2. Constructors cannot be abstract. 3. A subclass of an abstract class must defined the abstract methods. 4. Static methods may be declared abstract.   Line 1, line 2 and line 3 only   Line 1 only   Line 1 and line 2 only   Line 2 only   All are true   Half-n-half Clue   3. We would like to make a member of a class visible in all subclasses regardless of what package they are in. Which one of the following keywords would achieve this?   private   public   protected   private OR protected   Half-n-half Clue   4. Which of the following keywords are used to control access to a class member? (A) default (B) abstract (C) protected (D) interface (E) public   (C) & (E)   All of these.   (A), (C) & (E)   (B), (C) & (E)   Half-n-half Clue   5. The use of protected keyword to a member in a class will restrict its visibility as follows:   Visible only in the class and its subclass in the same package.   Visible only inside the package.   Visible in all classes in the same package and subclasses in other packages.   Visible only in the class where it is declared.   Half-n-half Clue   6. The concept of multiple inheritance is implemented in Java by (A) extending two or more classes (B) extending one class and implementing one or more interfaces (C) implementing two or more interfaces (D) all of these   (B) & (C)   (A) & (C)   (D)   (A)   Half-n-half Clue   7. Which of the following are keywords? (A) switch (B) integer (C) default (D) boolean (E) object   (B) & (C)   (A) & (C)   (D)   (E)   Half-n-half Clue