Distributed Testing means using multiple machines for load testing in which one of the machine can be made master and others can be kept as slave. It is very important to note that all the machines should be on the same network and should have the same version of Java and JMeter.
Distributed load testing is the process through which numerous systems can be used for simulating a load of a large number of users. By using the master-slave configuration, JMeter can do distribute load testing.