[单选]
You want to create a role to meet these requirements：
1：The role is to be protected from unauthorized usage.
2：The password of the role is not to be embedded in the application source code or stored in a table.
Which method would you use to restrict enabling of such roles（）

A . Create the role with global authentication.
B . Create the role with external authentication.
C . Create the role as a secure application role.
D . Create the role as a password-protected role.
E . Create a role and use Fine-Grained Access Control （FGAC） to secure the role.

Which two commands never trigger an implicit rebalancing within the disk group?（） (Choose two.) ALTER DISKGROUP misc MOUNT;。 ALTER DISKGROUP misc DROP DISK misc2;。 ALTER DISKGROUP misc CHECK ALL NOREPAIR;。 ALTER DISKGROUP misc RESIZE ALL SIZE 1023m;。 ALTER DISKGROUP dgroupA ADD DISK '/devices/A*'。金先生，52岁。十二指肠溃疡25年，上腹部隐痛1年，近1个月又出现呕吐，吐隔夜宿食，呕吐逐渐加重；精神状态差，消瘦明显，皮肤弹性差，贫血貌；胃镜检查确诊为十二指肠溃疡并幽门梗阻。决定近期行胃大部切除术。特殊的术前准备是（）术日晨插胃管。术前肌内注射阿托品。术前3d起每晚用温生理盐水洗胃。术前一晚肥皂水灌肠。术前禁饮食。 You received the following error： ORA-01578： ORACLE data block corrupted （file # %s， block # %s） Which file will you check to view additional information regarding the cause of this error？（） the alert log file and the trace files。 the redo log files。 the control file。 the change tracking file。 The EMPLOYEES table contains these columns: You need to write a query that will produce these results: 1. Display the salary multiplied by the commission_pct. 2. Exclude employees with a zero commission_pct. 3. Display a zero for employees with a null commission value. Evaluate the SQL statement: What does the statement provide?（） All of the desired results。 Two of the desired results。 One of the desired results。 An error statement。钢筋应平直、无损伤，表面不得有裂纹、油污、颗粒状或片状老锈，其检验方法正确的是（）。 A.观察。 B.检查进场复验报告。 C.检查化学成分等专项检验报告。 D.检查产品合格证明书。

You want to create a role to meet these requirements：
1：The role is to be protected from unauthorized usage.
2：The password of the role is not to be embedded in the application source code or stored in a table.
Which method would you use to restrict enabling of such roles（）

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[单选] You want to create a role to meet these requirements： 1：The role is to be protected from unauthorized usage. 2：The password of the role is not to be embedded in the application source code or stored in a table. Which method would you use to restrict enabling of such roles（）

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[单选]
You want to create a role to meet these requirements：
1：The role is to be protected from unauthorized usage.
2：The password of the role is not to be embedded in the application source code or stored in a table.
Which method would you use to restrict enabling of such roles（）