Oracle認證考試1Z0-031單項選擇題每日一練(2019.01.13)

單項選擇題
A table was just created on your Oracle database with six extents allocated to it. Which of the following factors most likely caused the table to have so many extents allocated?（）
A.The value for MINEXTENTS setting
B.The value for PCTINCREASE setting
C.The value for MAXEXTENTS setting
D.By default, Oracle allocates six extents to all database objects
單項選擇題
You are configuring your index to be stored in a tablespace. Which of the following storage parameters are NOT appropriate for indexes?（）
A.OPTIMAL
B.INITIAL
C.PCTINCREASE
D.NEXT
單項選擇題
You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）
A.One tablespace has only one datafile
B.Many tablespaces can share one datafile
C.One tablespace can have many datafiles
D.One datafile can contain many tablespaces
單項選擇題
You issue the following command in Oracle: CREATE TABLESPACE DAT_TBS DATAFILE "dat_tbs.dbf" SIZE 2M;. Later queries against the database reveal that the tablespace is located in the /u01/oradata/oracle directory. Which of the following choices identifies how Oracle likely determined what directory to place dat_tbs.dbf file in?（）
A.DB_CREATE_FILE_DEST
B.DB_CREATE_ONLINE_LOG_1
C.DB_CREATE_ONLINE_LOG_2
D.The directory is an operating system-specific default value in Oracle that can neigher be specified manually nor changed
單項選擇題
You are analyzing the components of the redo log mechanisms in your Oracle database. Which of the following purposes does the CKPT process serve?（）
A.Writes buffers to disk
B.Writes current redo log number to datafile headers
C.Writes redo log information to disk
D.Reads information into memory for users

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