Exports/Imports IMPDP and EXPDP

For Particular Tables

expdp TEST/TEST@ORCL tables=EMP,DEPT directory=TEST_DIR dumpfile=test.dmp logfile=test.log

impdp TEST/TEST@ORCL tables=EMP,DEPT directory=TEST_DIR dumpfile=test.dmp logfile=test.log

For 

Schema Exports/Imports

expdp TEST/TEST@ORCL schemas=HR dumpfile=test.dmp logfile=test.log

impdp TEST/TEST@ORCL schemas=HR dumpfile=test.dmp logfile=test.log  

import recreate the new table as in the dumpfile. 

impdp  dumpfile=emp.dmp logfile=imp1.log table_exists_action=replace