snychronisation point in your test script instructs 
winrunner to stop execution untill the application being 
tested is ready and then to continue the test[basically it 
is used when ever there is multi-tasking or processing in 
the application]

hope u got it now.
Regards,
rajesh

tool wait set of amount of time  for an application to 
respond to its input.during the test run th default amount 
of time may not be enough, the tool continue to test the 
application,before the application not ready.this leads to 
error in the script.this is the synchronisation between 
tool and the application.
the default amount of time the winrunner waits is 10 
seconds.
the default amount of time the rational robot waits is 1 
sec.

a)	Synchronization point in your test script instructs 
tool (like W/r or QTP) to stop execution until the 
application being tested is ready and then to is multi 
tasking or processing in the application
b)	This is the main use of the real time 

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Synchroni.p is used to tell qtp that it should wait for 
some time to perform action on the SUT.
Whenver there is 3rd application involvement in testing, we 
use this.

1 applic= qtp
2 applic=AUT
3 rd application- DBMS.
               - web servers
every application take some time to perform action. Since 
we don't know the behaviour of 3rd apli, we should use sync 
point.

Synchronisation point is used in QTP to give a time map 
between the tool and the application. With this feature(SP)
the tool(QTP) waits for the application to be completed for 
certain actions (basically internal actions which takes 
some time to be completed like updating a data in the 
database etc)  while executing the scripts.

Again we can use SP and also we can increse the Timeout 
option in QTP from the same purpose.

But by using SP tool waits till the action process ends ,
while by using timeout option the tool waits for a specific 
time period given by us ,irrespective of the fact that the 
process /action is over or not.