Answer:
import java.util.*;
public class Country
{
public static void main(String args[])
{
char ch,temp;
int flag = 0;
String country;
ArrayList<String> countries = new ArrayList<String>();
Scanner sc = new Scanner(System.in);
do
{
System.out.println("enter the country you have visited:\t");
country = sc.next();
for(int i=0;i<countries.size();i++)
{
if(countries.get(i).equals(country))
{
System.out.println("you have already entered the country");
flag = 1;
break;
}
}
if(flag == 0)
{
countries.add(country);
flag = 0;
}
System.out.println("want to add another country(y/n):\t");
ch = sc.next().charAt(0);
}while(ch!='n');
Collections.sort(countries);
System.out.println("Countries you have visited:\t"+countries);
System.out.println("Total number of contries visited:"+countries.size());
}
}
Explanation:
Answer:
The answer is "Option C".
Explanation:
Among all four of the above, the application of Kerberos is securer. The consumer not just to validates the provider but also verifies the product to the clients with secure authentication.
- It offers a common interface between windows as well as other operating systems.
- The user login Smart Card gives much higher protection as it allows security with two factors, that's why except Option C other choices were wrong.
'Modem'. A hardware that changes analogy to digital and vice versa.
Answer: a Star NetNetwork Topology