<span>A switch is a central network device that connects network nodes such as workstations and servers in a physical Star topology</span>
Answer:
He should disable UPnP technology to disallow devices to dynamically add themselves to the network without configuration.
Explanation:
- UPnP stands for Universal Plug n Play.
- It is an easiest way that allows gadgets to find all other devices connecting to your network.
- This can also modify router settings to allow devices from outside the network to access the router.
- External IP address can also be obtained by the gadget and a new port forwarding map can be set
- So from all perspectives, UPnP is an open invitation for hackers to scan for the ports and hack into the device.
- UPnP is a vulnerability to the secure system
Here you go,
import java.util.Scanner;
import java.util.Random;
public class OrderCalculator{
public static void main(String[] args){
float x, y, z, semi, area;
Scanner in = new Scanner(System.in);
System.out.print("Enter the 3 sides: ");
x = in.nextFloat();
y = in.nextFloat();
z = in.nextFloat();
semi = (float) ((x + y + z) / 2.0);
area = (float) Math.sqrt(semi * (semi - x) * (semi - y) * (semi - z));
System.out.printf("The area is: %.3f\n", area);
}
}
