Answer the following statements true (T) or false (F)
1. All methods in an abstract class are abstract.
2.. The MustOverride keyword has the same effect as the Overridable keyword.
3. Objects of abstract base classes can be instantiated.
4. A class with MustOverride methods does not necessarily have to be a MustInherit class.
5. An abstract class cannot have instance data and non-abstract methods.
1. False. An abstract class may contain instance data and non-abstract methods.
2. False. A MustOverride method has no implementation and must be overridden while an
Overridable method provides an implementation and the option of being overridden in
derived classes.
3. False. Only concrete classes can instantiate objects.
4. False. A class with MustOverride methods must be declared MustInherit.
5. False. An abstract class can have instance data and non-abstract methods.
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Which of these operations does an iterator class typically have?
a) Overloaded increment and decrement operators to move the next node forward or backward, respectively. b) Overloaded binary operator* to multiply two iterators. c) Overloaded operator== to compare iterators and return true if the iterators point to the same item. d) Overloaded operator&& to perform logical operations on two iterator. e) Overloaded operator!= to compare iterators and return false if the iterators do not point to the same item. f) Overloaded unary operator* that returns the item to which the iterator points.
Propose an algorithm for finding an intersection of two large relations (i.e., ones that do not fit in main memory) using hashing.
What will be an ideal response?
Non?volatile memory
What is the meaning of the term (when applied to memory systems technology)?
To flip bits we create a mask with the bits to be flipped set to 0 and the other bits set to 1 and then exclusive or it to the data.
Answer the following statement true (T) or false (F)