In which situations does the Oracle Data Pump use external tables and not the direct path load whileexporting a table（）

A . when row directories need more row entries B . when there is row migration in the data block C . when there is an increase in the PCTFREE value for the data block D . when more transaction slots are required than are initially configured

A . One vessel is approaching another vessel from more than 20° abaft the beam B . It is the duty of the vessel being overtaken to get out of the way C . Any later change of bearing between the two vessels shall not make the overtaking vessel a crossing vessel D . All of the above

A . one sidelight of a vessel ahead of you B . one sidelight and a masthead light of a vessel ahead of you C . one sidelight，a masthead light，and a range light of a vessel ahead of you D . both sidelights of a vessel dead ahead of you

A . when performing export and import using Oracle Data Pump B . when performing backup and recovery operations using Oracle Recovery Manager C . when performing batch processing and bulk loading operation in a data warehouse environment  D . in an online transaction processing （OLTP） system where large number of client sessions are idle most of the time

A . A table referenced in the FROM clause has no indexed column. B . The table referenced in the FROM clause has more than 200 columns. C . Two or more tables in the FROM clause have identical column names. D . The FROM clause contains two or more tables in the SELECT statement.

A . Oxygen deficient spaces B . Compartments containing poisonous vapors C . Fighting fires that produce heavy smoke D . Underwater search

A . consume B . assume C . perfume D . resume

A . when multiple databases are to be registered with the listener B . when DBAs need to connect remotely to start up the database instance C . when users need to connect the database instance using the host naming method D . when the database instance that is to be registered with the listener is configured in shared server mode

A . Running into head seas B . Running in the trough C . Running with following seas D . Anchored with your bow into the sea

A . After the COPY command. B . After adding a data file in the target database. C . After adding a tablespace in the target database. D . After adding a tablespace in the catalog database. E . After dropping a data file in the catalog database. F . After running SQL Loader to load a large amount of data.

A . To configure a route to the first Layer 3 device on the network segment. B . To configure a route from an ISP router into a corporate network. C . To configure a route when the administrative distance of the current routing protocolis too low. D . To reach a network is more than 15 hops away. E . To provide access to the Internet for enterprise hosts.

A . a pre-sale TDA is mandatory B . a pre-install TDA is mandatory C . a pre-install TDA is not mandatory since it is not FirstIn Customer Location （FICL） D . both pre-sale and pre-install TDAs are mandatory

A .  The user has dropped an important table that needs to be recovered. B .  The database files are corrupted when the database is open. C .  You are not able to start up the database instance because the required database files are missing. D .  The archived log files are missing for which backup is not available.

A . Partitioning of network resources is enabled. B . VRFs cannot support path isolation from MAN/WAN designs. C . VRFs cannot be used to map a virtualized data center to a MPLS implementation. D . VRFs do not allow for the use of application services with multiple access topologies. E . An access design using a VRF allows for an aggregation layer service module solution.

A . After a shutdown abort. B . When recovering to an SCN. C . When recovering until a specific time. D . When a required archived log is missing.

A . When the data is naturally tabular B . When the number of nodes are volatile C . When the data by nature has sparse attributes D . When the data is of low volume and requires a complex star-schema topology

A . A. Association. B . B. Generalization. C . C. Collocation. D . D. Contextualization.

A．They did not abide by the traditional dress code B．They were not allowed to expose their arms and back. C．They could wear men’s riding garments. D．They could choose their own spouse or to divorce them. 此题为多项选择题。

A．America. B．Australia C．Canada. D．The U.K.