1Z0-023 考试回忆 11.20

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　　D. ten per transaction
　　E. number_of_users*25
　　
　　8. MINEXTENTS must be at least _____ when a rollback segment is created.
　　
　　A. 1
　　B. 2
　　C. 3
　　D. 5
　　
　　9. You are creating a database with a character set other than US7ACII. Which operating system environmental variable needs to be set to specify the director location of the NLS support files?
　　
　　A. NLS_LANG
　　B. ORA_NLS33
　　C. ORACLE_SID
　　D. ORACLE_BASE
　　E. ORACLE_HOME
　　
　　10. Given the statement:
　　
　　CREATE DATABASE orc1
　　LOGFILE GROUP 1 憉1/Oracle/dba/logla.rdo?SITE DM
　　GROUP 2 憉01/Oracle/dba/logla.rdo?SITE DM
　　DATAFILE 憉01/Oracle/dbs/sys_01.dbf?REUSE;
　　
　　Which statement is true?
　　
　　A. The online redo logs will be multiplexed.
　　B. The file 憉01/Oracle/dbs/sys_01.dbf?already exists.
　　C. File 憉01/Oracle/dbs/sys_01.dbf?as a parameter file.
　　D. The control file name is 憉01/Oracle/dbs/sys_01.dbf?
　　E. Oracle will determine the optimum size for 憉01/Oracle/dba/sys_01.dbf?
　　
　　11. What is a default role?
　　
　　A. A role that requires a password.
　　B. A role that requires no password.
　　C. A role automatically enabled when the user logs on.
　　D. A role automatically assigned when the user is created.
　　
　　12. Who is the owner of a role?
　　
　　A. SYS
　　B. Nobody
　　C. SYSTEM
　　D. The creator
　　
　　13. Which class of segments is most likely to cause fragmentation in permanent tablespace?
　　
　　A. Index segments.
　　B. Rollb

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