Why the response is very slow when the DNS enrty of server PC is remov

Question

Hi
Though this subject has been already discussed at many places,im unable to get the clue.Here is my problem.In my office (LAN),server and client are running at different PC.After DNS entry of server PC is removed from DNS server,the page loading and every request & response between client and server is very slow.It takes 2 minutes for each and every request.And coming to the possible solutions,is "configuring the server PC in DNS server" is the only solution?When both the server and client PCs are DNS configured i dont see any issue or slowdown.Any help would be really appreciated
Assuming it is a lookup issue,i have written the following test application.
public class DnsName
public static void main(String[] arg)
String ipaddress = "";
String hostaddress = "";
if(arg.length == 1)
ipaddress = arg[0];
else
System.out.println("!!!!!!Usage : java DnsName <ipaddress>");
System.exit(0);
System.out.println("Time before processing : " + System.currentTimeMillis());
try
hostaddress = (InetAddress.getByName(ipaddress)).getHostName();
catch(UnknownHostException uhe)
System.out.println("Exception occured " + uhe);
System.out.println("Ip address : " + ipaddress);
System.out.println("Host name : " + hostaddress);
System.out.println("Time after processing : " + System.currentTimeMillis());
When it was compiled and run on a linux PC,time difference betwwen process is around 50ms,but when the same application is run in a Windows PC,the time difference is around 4-5 seconds(4000ms).Can anyone tell me what makes the difference in Windows??
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Answer 1

Because it does a DNS lookup. And without a server, the interface must wait for a timeout.