Answer:
Rule based Attack.
Explanation:
As password cracking is a technique used to extract user’s password of application/files without the knowledge of the legitimate user. The attacker can use Rule Based Attack to find the password and to intrude or compromise the network and systems.
This is like a programming language to generate the password. This involves functions to modify, cut, edit and extend the generally used terms by the user.
Answer:
import java.util.*;
public class MyClass {
public static void main(String args[]) {
Scanner input = new Scanner(System.in);
System.out.print("Input a word: ");
String userinput = input.nextLine();
for(int i =0;i<userinput.length();i+=2) {
System.out.print(userinput.charAt(i));
}
}
}
Explanation:
This line prompts user for input
System.out.print("Input a word: ");
This declares a string variable named userinput and also gets input from the user
String userinput = input.nextLine();
The following iterates through every other character of userinput from the first using iteration variable i and i is incremented by 2
for(int i =0;i<userinput.length();i+=2) {
This prints characters at i-th position
System.out.print(userinput.charAt(i));
Answer:
import sys
import turtle
import random
def n_pointed_star(total_points):
if total_points <= 4:
raise ValueError('Not enough total_points')
area = 150
for coprime in range(total_points//2, 1, -1):
if greatest_common_divisor(total_points, coprime) == 1:
start = turtle.position()
for _ in range(total_points):
turtle.forward(area)
turtle.left(360.0 / total_points * coprime)
turtle.setposition(start)
return
def greatest_common_divisor(a, b):
while b != 0:
a, b = b, a % b
return a
turtle.reset()
n_pointed_star(5)
Explanation:
- Inside the n_pointed_star function, check whether the total no. of points are less than or equal to 4 and then throw an exception.
- Loop through the total_points variable and check whether the result from greatest_common_divisor is equal to 1 or not and then set the starting position of turtle and move it.
- Create the greatest_common_divisor which takes two parameters a and b to find the GCD.
- Finally reset the turtle and call the n_pointed_star function.
Answer:
Singleton pattern is the pattern for design that is build using the global variables which creates a lot of drawback in the designing. Singleton pattern are considered with the global variable and thus cannot be bound into single unit which complexes the components in design.
They have a loose coupled variables in design and also does not show the property of the multi-threading .These feature are responsible for the decrement in the performance and thus are not highly preferred choice for the pattern.So, it is known as the "anti- pattern".
