Answer:
A hard disk provides a high-capacity alternative to magnetic storage media. It contains metal platters coated with a magnetic layer. The platters usually spin continuously when a computer is on, storing data in different sectors on the magnetic disk.
Explanation:
We must be careful of when retrieving messages/data from mobile devices in public because of Bluebugging. It is a form of attack through the use of Bluetooth. It is more than just Bluesnarling and Bluejacking. It goes beyond, allowing the thieves to take control of a device.
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;
}
}
///////////////////////////////////////////////////////////////////////////////////////////////////////
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.
Answer:
In HTML file
<body style="background-color:orange;">
Or
In CSS file
body {
background-color: orange;
}
