An administrator account is granted the CREATE SESSION and SET CONTAINER system privileges.A multitenant container database (CDB) instant has the following parameter set:THREADED_EXECUTION = FALSEWhich four statements are true about this administrator est

A.FIND_TIMER

B.CREATE_TIMER

C.SET_TIMER

D.DELETE_TIMER

E.GET_APPLICATION_PROPERTY

以下程序的输出结果是_____。

include＜iostream.h＞

class object

{ private:

int val;

public:

object( ) ;

object(int i) ;

～object( ) ;};

object: :object( )

{ val＝0;

cout ＜ ＜ "Default constructor for object" ＜ ＜ endl;}

object: :object(int i)

{ val＝i;

cout ＜ ＜ "Constructor for object" ＜ ＜ val ＜ ＜ endl;}

object: :～object( )

{ cout ＜ ＜ "Destructor for object" ＜ ＜ val ＜ ＜ endl;}

class container{ private:

object one;

object two;

int data;

public:

container( ) ;

container(int i,int j,int k) ;

～container( ) ;};

container: :container( )

{ data＝0;

cout ＜ ＜ "Default constructor for container" ＜ ＜ endl;}

container: :container(int i,int j,int k) :two(i) ,one(j)

{ data＝k;

cout ＜ ＜ "Constructor for container" ＜ ＜ endl;}

container: :～container( )

{ cout ＜ ＜ "Destructor for container" ＜ ＜ endl;}

void main( )

{ container anObj(5,6,10) ;}

Examinethecode：CREATEROLEreadonlyIDENTIFIESUSINGapp.chk_readwrite；CREATEROLEreadwriteIDENTIFIEDUSINGapp.chk_readwrite；CREATEORREPLACEPROCEDUREapp.chk_readwriteAUTHIDCURRENT_USERISipchkSTRING（30）；BEGINIFsys_context（‘USERENV’，’ISDBA’）=’TRUE’THENDBMS_SESSION.SET_ROLE‘READWRITE’）；ELSEDBMS_SESSION.SET_ROLE（‘READONLY’）；END；/WhichthreestatementscorrectlydescribetheSecureApplicationroledefinition？（）

A.Nouserorapplicationhastorememberorhideapassword.

B.ItpreventseveryoneexceptatrueDBAsessionfromacquiringtheREADWRITErole.

C.app.chk_readwriteiscalledwheneverausertriestoaccessrowsprotectedbytheREADONLYorREADWRITElabel.

D.app.chk_readwriteiscalledbyusersorapplicationswhentheywanttoenabletheREADONLYor READWRITErole.

A new report process containing a complex query is written, with high impact on the database. You wantto collect basic statistics about query, such as the level of parallelism, total database time, and the number of I/O requests.For the database instance STATISTICS_LEVEL, the initialization parameter is set to TYPICAL and theCONTROL_MANAGEMENT_PACK_ACCESS parameter is set to DIAGNOSTIC+TUNING.What should you do to accomplish this task?（）

A. Execute the query and view Active Session History (ASH) for information about the query.

B. Enable SQL trace for the query.

C. Create a database operation, execute the query, and use the DBMS_SQL_MONITOR. REPORT_SQL_MONITOR function to view the report.

D. Use the DBMS_APPLICATION_INFO.SET_SESSION_LONGOPS procedure to monitor query execution and view the information from the V$SESSION_LONGOPS view.

You are the administrator of a Windows Server 2003 computer named Testking1.Backups of the System State data of Testking1 occur each day by using the localAdministrator account.A new requirement restricts you from running services by using theAdministrator account. To meet the requirement, you create a new service accountnamed BackupTestking1 to be used for backups. You want this account to have theminimum permissions necessary to perform backups.You need to grant the appropriate permissions to the BackupTestking1 account andto configure the backup job to use the BackupTestking1 account.What should you do?（）

A. Add the BackupTestking1 account to the Server Operators group. Modify the backup Scheduled Task to use the BackupTestking1 account.

B. Add the BackupTestking1 account to the Backup Operators group. Modify the backup Scheduled Task to use the BackupTesking1 account.

C. Add the BackupTestking1 account to the Server Operators group. Modify the Task Scheduler service to use the BackupTestking1 account.

D. Add the BackupTestking1 account to the Backup Operators group. Modify the Task Scheduler service to use the BackupTestking1 account.