Answer:
The Java class is given below with appropriate tags for better understanding
Explanation:
public class Cat extends Pet{
private String breed;
public Cat(String name, String owner, String breed){
/* implementation not shown */
super(name, owner);
this.breed = breed;
}
public String getBreed() {
return breed;
}
public void setBreed(String breed) {
this.breed = breed;
}
public String speak(){ /* implementation not shown */
return "Purring…";
}
}
Answer: Vulnerability of
Explanation:
The network administrator was able to identify that virus before it led to denial of service to users. Since it has been discovered, it is no longer a threat as measures will be taken to eliminate it. But a virus that was successful uploaded shows how vulnerable the system is or how bad the security protections put in place are. Steps has to be taken to ensure it does not reoccur.
Answer:
False
Explanation:
The private member of a class is not accessible by using the Dot notation ,however the private member are those which are not accessible inside the class they are accessible outside the class .The public member are accessible inside the class so they are accessible by using the dot operator .
<u>Following are the example is given below in C++ Language </u>
#include<iostream> // header file
using namespace std;
class Rectangle
{
private:
double r; // private member
public:
double area()
{ return 3.14*r*r;
}
};
int main()
{
Rectangle r1;// creating the object
r1.r = 3.5;
double t= r1.area(); // calling
cout<<" Area is:"<<t;
return 0;
}
Output:
compile time error is generated
<u>The correct program to access the private member of class is given below </u>
#include<iostream> // header file
using namespace std;
class Rectangle
{
private:
double r; // private member
public:
double area()
{
r1=r;
double t2=3.14*r2*r2;
return(t2); // return the value
}
};
int main()
{
Rectangle r1;// creating the object
r1.r = 1.5;
double t= r1.area(); // calling
cout<<" Area is:"<<t;
return 0;
}
Therefore the given statement is False
In java...
public boolean checkSquare(int n){
int actualNumber = n;
int squareRoot = (int)Math.sqrt(n);
int squaredNumber = Math.pow(squareRoot,2);
if(squaredNumber==actualNumber){
return true;
} else {
return false;
}
}
Answer:
C) Hardware, Software, People
Explanation:
System design is the determination of the overall system architecture-consisting of a set of physical processing components, Hardware, Software, People and the communication among them-that will satisfy the system’s essential requirements.
