最新的Oracle 1z1-449免費考試真題

問題1

What access driver does the Oracle SQL Connector for HDFS use when reading HDFS data by using external tables?

A. ORACLE_HIVE_LOADER

B. ORACLE_DATA_PUMP

C. HADOOP_LOADER

D. ORACLE_BDSQL

E. ORACLE_LOADER

F. ORACLE_HDP

正確答案: E

說明：（僅 Fast2test 成員可見）

問題2

The log data for your customer's Apache web server has seven string columns.
What is the correct command to load the log data from the file 'sample.log' into a new Hive table LOGS that does not currently exist?

A. hive> create table logs as select * from sample.log;

B. hive> CREATE TABLE logs (t1 string, t2 string, t3 string, t4 string, t5 string, t6 string, t7 string) ROW FORMAT DELIMITED FIELDS TERMINATED BY ' ';hive> LOAD DATA
LOCAL INPATH 'sample.log' OVERWRITE INTO TABLE logs;

C. hive> CREATE TABLE logs (t1 string, t2 string, t3 string, t4 string, t5 string, t6 string, t7 string) ROW FORMAT DELIMITED FIELDS TERMINATED BY ' ';

D. hive> create table logs as load sample.1og from hadoop;

E. hive> LOAD DATA LOCAL INPATH 'sample.log' OVERWRITE INTO TABLE logs;hive>
CREATE TABLE logs (t1 string, t2 string, t3 string, t4 string, t5 string, t6 string, t7 string)
ROW FORMAT DELIMITED FIELDS TERMINATED BY ' ';

正確答案: B

說明：（僅 Fast2test 成員可見）

問題3

What is the result when a flume event occurs for the following single node configuration?

A. The event is sent out on port 44444.

B. The event is written to memory.

C. The event is logged to the screen.

D. The event output is not defined in this section.

E. The event is written to the netcat process.

正確答案: C

說明：（僅 Fast2test 成員可見）

問題4

Your customer has had a security breach on its running Big Data Appliance and needs to quickly enable security for Hive and Impala.
What is the quickest way to enable the Sentry service?

A. Execute bdacli sentry enable.

B. Use the Mammoth utility during installation.

C. Sentry is enabled by default on the Big Data Appliance.

D. Use the Cloudera Manager.

正確答案: D

說明：（僅 Fast2test 成員可見）

問題5

Which command should you use to view the contents of the HDFS directory,
/user/oracle/logs?

A. cd /user/oracle/logshadoop fs -ls *

B. hadoop fs -cat /user/oracle/logs

C. hadoop fs -ls /user/oracle/logs

D. hive> select * from /user/oracle/logs

E. cd /user/oraclehadoop fs -ls logs

F. hadoop fs -listfiles /user/oracle/logs

正確答案: C

說明：（僅 Fast2test 成員可見）

問題6

Your customer has purchased Big Data SQL and wants to set it up to access its Big Data
Appliance Hadoop and Oracle Exadata Database Server.
How should you enable Oracle Big Data SQL on the Big Data Appliance post installation?

A. mammoth big_data_sql=TRUE

B. dbmcli enable big_data_sql

C. mammoth bds=TRUE

D. bdacli enable big_data_sql

E. emcli enable big_data_sql

正確答案: D

說明：（僅 Fast2test 成員可見）

問題7

What happens if an active NameNode fails in the Oracle Big Data Appliance?

A. ClouderaManager starts a NameNode process on a surviving node.

B. The ResourceManager starts a NameNode process on a surviving node.

C. The entire cluster fails.

D. All traffic is directed to the master DataNode until the NameNode is restarted.

E. The role of the active NameNode fails over automatically to the standby NameNode.

正確答案: E

說明：（僅 Fast2test 成員可見）

問題8

What are two reasons that a MapReduce job is not run when the following command is executed in Hive? (Choose two.) hive> create view v_consolidated_credit_products as select hcd.customer_id, hcd.credit_card_limits, hcd.credit_balance, hmda.n_mortgages, hmda.mortgage_amount from mortgages_department_agg hmda join credit_department hcd on hcd.customer_id=hmda.customer_id;
OK
Time taken: 0.316 seconds

A. MapReduce is run; the command output is incorrect.

B. The MapReduce job is run when the view is accessed.

C. MapReduce is run in the background.

D. MapReduce is not run with Hive. Hive bypasses the MapReduce layer.

E. A view only defines the metadata in the RDBMS store.

正確答案: B,E

說明：（僅 Fast2test 成員可見）

最新的Oracle Big Data 2017 Implementation Essentials - 1z1-449免費考試真題

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