How to take compressed export backup in oracle 11g

[oracle@dba1 rman]$ expdp dumpfile=1.dmp logfile=1.log schemas=VENKY COMPRESSION=ALL

Export: Release 11.2.0.3.0 - Production on Wed Jan 24 21:37:07 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

Username: / as sysdba

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Starting "SYS"."SYS_EXPORT_SCHEMA_01":  /******** AS SYSDBA dumpfile=1.dmp logfile=1.log schemas=VENKY COMPRESSION=ALL
Estimate in progress using BLOCKS method...
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
Total estimation using BLOCKS method: 320 KB
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
. . exported "VENKY"."BONUS"                             5.593 KB     896 rows
. . exported "VENKY"."DEPT"                              4.984 KB       4 rows
. . exported "VENKY"."DUMMY"                             4.687 KB       1 rows
. . exported "VENKY"."EMP"                               5.632 KB      14 rows
. . exported "VENKY"."SALGRADE"                          4.898 KB       5 rows
Master table "SYS"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
******************************************************************************
Dump file set for SYS.SYS_EXPORT_SCHEMA_01 is:
  /u01/app/oracle/admin/prd/dpdump/1.dmp
Job "SYS"."SYS_EXPORT_SCHEMA_01" successfully completed at 21:38:12


[oracle@dba1 rman]$ 
[oracle@dba1 rman]$ cd /u01/app/oracle/admin/prd/dpdump/
[oracle@dba1 dpdump]$ ll
total 104
-rw-r----- 1 oracle oinstall 94208 Jan 24 21:38 1.dmp
-rw-r--r-- 1 oracle oinstall  1592 Jan 24 21:38 1.log
-rw-r----- 1 oracle oinstall   116 Nov 12 14:48 dp.log
[oracle@dba1 dpdump]$ impdp dumpfile=1.dmp logfile=1.log remap_schema=VENKY:MANI

Import: Release 11.2.0.3.0 - Production on Wed Jan 24 21:40:39 2018

Copyright (c) 1982, 2011, Oracle and/or its affiliates.  All rights reserved.

Username: / as sysdba

Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Master table "SYS"."SYS_IMPORT_FULL_01" successfully loaded/unloaded
Starting "SYS"."SYS_IMPORT_FULL_01":  /******** AS SYSDBA dumpfile=1.dmp logfile=1.log remap_schema=VENKY:MANI
Processing object type SCHEMA_EXPORT/USER
Processing object type SCHEMA_EXPORT/SYSTEM_GRANT
Processing object type SCHEMA_EXPORT/ROLE_GRANT
Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
Processing object type SCHEMA_EXPORT/TABLE/TABLE
Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
. . imported "MANI"."BONUS"                              5.593 KB     896 rows
. . imported "MANI"."DEPT"                               4.984 KB       4 rows
. . imported "MANI"."DUMMY"                              4.687 KB       1 rows
. . imported "MANI"."EMP"                                5.632 KB      14 rows
. . imported "MANI"."SALGRADE"                           4.898 KB       5 rows
Job "SYS"."SYS_IMPORT_FULL_01" successfully completed at 21:40:46

[oracle@dba1 dpdump]$