A: Symmetric encryption uses a single key that should be kept secret. The same key is used for both encryption and decryption of data.
Answer:
No
Explanation:
Wireless communication devices like the cell phones transmits signals using radio or electromagnetic wave, which would trigger a bomb. An example of this kind of bomb is the home-made bomb also known as IED (improved explosive device).
The most common type of this IED is the radio controlled IED, which uses electromagnetic wave from a cell phone or a radio controlled type firing circuit. Insurgents, criminals etc, make use of such devices, since the materials are easy to get and are affordable.
Answer:
public class num6 {
public static void main(String[] args) {
int n = 4;
for(int i = 1; i <= n; ++i) {
for(int j = 1; j <= i; ++j) {
System.out.print("* ");
}
System.out.println();
}
}
}
Explanation:
This solution is implemented in Java
Two for loops are required for this (an inner nd outer for loop).
The innner and outer for loops can be seen as implementing rows and columns (so on the first 'row' i=1, so a single star is printed, on the second row, i =2, two stars are printed and so on, all on seperate lines)
