This is the most commonly asked question about SCCM . Well the answer to this is :
Policyagent.log : This log contains information about the new policies received by the client.
Policyevaluator.log: This log contains information about the evaluation of new policies that are being received .
Datatransferservices.log : This log contains the software download information onto the client machine .
execmgr.log ( Most Important) : This log contains all other relevant information .
