Java Networking Test – 1

1. What will be the output of the following Java program?

 
    import java.net.*;
    class networking 
    {
        public static void main(String[] args) throws UnknownHostException 
        {
            InetAddress obj1 = InetAddress.getByName("cisco.com");
            System.out.print(obj1.getHostName());
        }
    }

2. Which of these class is used to encapsulate IP address and DNS?

3. Which of these is a full form of DNS?

4. How many bits are in a single IP address?

5. What will be the output of the following Java program?

 
    import java.net.*;
    class networking 
    {
        public static void main(String[] args) throws UnknownHostException 
        {
            InetAddress obj1 = InetAddress.getByName("sanfoundry.com");
            InetAddress obj2 = InetAddress.getByName("sanfoundry.com");
            boolean x = obj1.equals(obj2); 
            System.out.print(x);
        }
    }

6. How many ports of TCP/IP are reserved for specific protocols?

7. What will be the output of the following Java program?

 
import java.io.*;  
import java.net.*;  
public class URLDemo 
{  
    public static void main(String[] args) 
    {  
        try 
        {  
            URL url=new URL("https://www.sanfoundry.com/java-mcq");  
            System.out.println("Protocol: "+url.getProtocol());  
            System.out.println("Host Name: "+url.getHost());  
            System.out.println("Port Number: "+url.getPort());   
        } catch(Exception e){System.out.println(e);}  
    }  
}

8. Which of these is a protocol for breaking and sending packets to an address across a network?

9. What will be the output of the following Java program?

 
    import java.net.*;
    public class networking 
    {
        public static void main(String[] args) throws UnknownHostException 
        {
            InetAddress obj1 = InetAddress.getByName("cisco.com");
            InetAddress obj2 = InetAddress.getByName("sanfoundry.com");
            boolean x = obj1.equals(obj2); 
            System.out.print(x);
        }
    }

10. Which of these package contains classes and interfaces for networking?