MCQOPTIONS
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MCQOPTIONS
This section includes 29 Mcqs, each offering curated multiple-choice questions to sharpen your Hadoop knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following is correct syntax for parameter substitution using cmd? |
| A. | pig {-param param_name = param_value | -param_file file_name} [-debug | -dryrun] script |
| B. | {%declare | %default} param_name param_value |
| C. | {%declare | %default} param_name param_value cmd |
| D. | All of the mentioned |
| Answer» B. {%declare | %default} param_name param_value | |
| 2. |
Which of the following scripts that generate more than three MapReduce jobs? |
| A. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| B. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| C. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| D. | None of the mentioned |
| Answer» B. a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); | |
| 3. |
__________ method tells LoadFunc which fields are required in the Pig script. |
| A. | pushProjection() |
| B. | relativeToAbsolutePath() |
| C. | prepareToRead() |
| D. | none of the mentioned |
| Answer» B. relativeToAbsolutePath() | |
| 4. |
A loader implementation should implement __________ if casts (implicit or explicit) from DataByteArray fields to other types need to be supported. |
| A. | LoadPushDown |
| B. | LoadMetadata |
| C. | LoadCaster |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 5. |
Which of the following is shortcut for DUMP operator? |
| A. | \de alias |
| B. | \d alias |
| C. | \q |
| D. | None of the mentioned |
| Answer» C. \q | |
| 6. |
Which of the following code is used to find scripts that use only the default parallelism? |
| A. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| B. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| C. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| D. | None of the mentioned |
| Answer» B. a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); | |
| 7. |
In comparison to SQL, Pig uses ______________ |
| A. | Lazy evaluation |
| B. | ETL |
| C. | Supports pipeline splits |
| D. | All of the mentioned |
| Answer» E. | |
| 8. |
Which of the following file contains user defined functions (UDFs)? |
| A. | script2-local.pig |
| B. | pig.jar |
| C. | tutorial.jar |
| D. | excite.log.bz2 |
| Answer» D. excite.log.bz2 | |
| 9. |
Which of the following is/are a feature of Pig? |
| A. | Rich set of operators |
| B. | Ease of programming |
| C. | Extensibility |
| D. | All of the above |
| Answer» E. | |
| 10. |
Which of the following script determines the number of scripts run by user and queue on a cluster? |
| A. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| B. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| C. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| D. | None of the mentioned |
| Answer» B. a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); | |
| 11. |
Which of the following command is used to show values to keys used in Pig? |
| A. | set |
| B. | declare |
| C. | display |
| D. | all of the mentioned |
| Answer» B. declare | |
| 12. |
PigUnit runs in Pig’s _______ mode by default. |
| A. | local |
| B. | tez |
| C. | mapreduce |
| D. | none of the mentioned |
| Answer» B. tez | |
| 13. |
Which of the following is an entry in jobconf? |
| A. | pig.job |
| B. | pig.input.dirs |
| C. | pig.feature |
| D. | none of the mentioned |
| Answer» C. pig.feature | |
| 14. |
Which of the following company has developed PIG? |
| A. | |
| B. | Yahoo |
| C. | Microsoft |
| D. | Apple |
| Answer» C. Microsoft | |
| 15. |
Which of the following find the running time of each script (in seconds)? |
| A. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| B. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| C. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| D. | All of the mentioned |
| Answer» B. a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); | |
| 16. |
Which of the following has methods to deal with metadata? |
| A. | LoadPushDown |
| B. | LoadMetadata |
| C. | LoadCaster |
| D. | All of the mentioned |
| Answer» C. LoadCaster | |
| 17. |
In which year apache Pig was released? |
| A. | 2005 |
| B. | 2006 |
| C. | 2007 |
| D. | 2008 |
| Answer» C. 2007 | |
| 18. |
Which of the following command can be used for debugging? |
| A. | exec |
| B. | execute |
| C. | error |
| D. | throw |
| Answer» B. execute | |
| 19. |
Which of the following is not true about Pig? |
| A. | Apache Pig is an abstraction over MapReduce |
| B. | Pig can not perform all the data manipulation operations in Hadoop. |
| C. | Pig is a tool/platform which is used to analyze larger sets of data representing them as data flows. |
| D. | None of the above |
| Answer» C. Pig is a tool/platform which is used to analyze larger sets of data representing them as data flows. | |
| 20. |
Which of the following script is used to check scripts that have failed jobs? |
| A. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| B. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| C. | a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); |
| D. | None of the mentioned |
| Answer» B. a = load '/mapred/history/done' using HadoopJobHistoryLoader() as (j:map[], m:map[], r:map[]); | |
| 21. |
Which of the following will compile the Pigunit? |
| A. | $pig_trunk ant pigunit-jar |
| B. | $pig_tr ant pigunit-jar |
| C. | $pig_ ant pigunit-jar |
| D. | None of the mentioned |
| Answer» B. $pig_tr ant pigunit-jar | |
| 22. |
Which of the following will run pig in local mode? |
| A. | $ pig -x local … |
| B. | $ pig -x tez_local … |
| C. | $ pig … |
| D. | None of the mentioned |
| Answer» B. $ pig -x tez_local … | |
| 23. |
Which of the following is the default mode? |
| A. | Mapreduce |
| B. | Tez |
| C. | Local |
| D. | All of the mentioned |
| Answer» B. Tez | |
| 24. |
Pig Latin statements are generally organized in one of the following ways? |
| A. | A LOAD statement to read data from the file system |
| B. | A series of “transformation” statements to process the data |
| C. | A DUMP statement to view results or a STORE statement to save the results |
| D. | All of the mentioned |
| Answer» E. | |
| 25. |
You can run Pig in batch mode using __________ |
| A. | Pig shell command |
| B. | Pig scripts |
| C. | Pig options |
| D. | All of the mentioned |
| Answer» C. Pig options | |
| 26. |
Which of the following function is used to read data in PIG? |
| A. | WRITE |
| B. | READ |
| C. | LOAD |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 27. |
Pig operates in mainly how many nodes? |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Five |
| Answer» B. Three | |
| 28. |
_________ operator is used to review the schema of a relation. |
| A. | DUMP |
| B. | DESCRIBE |
| C. | STORE |
| D. | EXPLAIN |
| Answer» C. STORE | |
| 29. |
Which of the following operator is used to view the map reduce execution plans? |
| A. | DUMP |
| B. | DESCRIBE |
| C. | STORE |
| D. | EXPLAIN |
| Answer» E. | |