Answer:
2. <em>A reference of type A can be treated as a reference of type B</em> - False
Base class or its objects are not related to their derived class (or its objects).
Explanation:
class A {
int a;
public A() {
a = 7;
}
}
class B extends A {
int b;
public B() {
b = 8;
}
}
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1. <em>After the constructor for class B executes, the variable a will have the value 7 </em>- True.
When an object of a derived class is declared, the constructor of base class is called before the constructor of derived class (is called).
3. <em>Both variables a and b are instance variables </em>- True.
Classes can have instance, or member, variables and methods.
4.<em> After the constructor for class B executes, the variable b will have the value 8</em> - True.
When object of class B is declared, its constructor was called, which initialized variable b to 8.
A computer’s motherboard has a series of slots and connectors. Slots allow daughter boards to be plugged directly while connectors allow communication through cables with other peripheral devices. CPU sockets, Hard Drive connectors, Memory sockets, and Power connector are examples of components that can be connected internally in some way to the motherboard. Other physical devices include RAM, hard disks, and graphics card.
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