A.CONNECT SYS/password SYSDBA B.CONNECT SYS/password AS SYSDBA C.CONNECT AS SYSDBA SYS/password D.CONNECT DBA SYS/password
A.SQL*Plus B.Oracle Net C.Oracle Listner D.Oracle Database Configuration Assistant
A.STARTUP MOUNT B.STARTUP NOMOUNT C.START NOMOUNT D.START MOUNT