MCQOPTIONS
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MCQOPTIONS
This section includes 20 Mcqs, each offering curated multiple-choice questions to sharpen your Apache Hadoop knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
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. | |
| 2. |
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 | |
| 3. |
You can run Pig in interactive mode using the ______ shell. |
| A. | Grunt |
| B. | FS |
| C. | HDFS |
| D. | None of the mentioned |
| Answer» B. FS | |
| 4. |
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 | |
| 5. |
Pig operates in mainly how many nodes ? |
| A. | Two |
| B. | Three |
| C. | Four |
| D. | Five |
| Answer» B. Three | |
| 6. |
Which of the following is the default mode ? |
| A. | Mapreduce |
| B. | Tez |
| C. | Local |
| D. | All of the mentioned |
| Answer» B. Tez | |
| 7. |
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 … | |
| 8. |
$ pig -x tez_local … will enable ________ mode in Pig. |
| A. | Mapreduce |
| B. | Tez |
| C. | Local |
| D. | None of the mentioned |
| Answer» E. | |
| 9. |
____________ method will be called by Pig both in the front end and back end to pass a unique signature to the Loader. |
| A. | relativeToAbsolutePath() |
| B. | setUdfContextSignature() |
| C. | getCacheFiles() |
| D. | getShipFiles() |
| Answer» C. getCacheFiles() | |
| 10. |
__________ abstract class has three main methods for loading data and for most use cases it would suffice to extend it. |
| A. | Load |
| B. | LoadFunc |
| C. | FuncLoad |
| D. | None of the mentioned |
| Answer» C. FuncLoad | |
| 11. |
The loader should use ______ method to communicate the load information to the underlying InputFormat. |
| A. | relativeToAbsolutePath() |
| B. | setUdfContextSignature() |
| C. | getCacheFiles() |
| D. | setLocation() |
| Answer» E. | |
| 12. |
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 | |
| 13. |
___________ return a list of hdfs files to ship to distributed cache. |
| A. | relativeToAbsolutePath() |
| B. | setUdfContextSignature() |
| C. | getCacheFiles() |
| D. | getShipFiles() |
| Answer» E. | |
| 14. |
____________ method enables the RecordReader associated with the InputFormat provided by the LoadFunc is passed to the LoadFunc. |
| A. | getNext() |
| B. | relativeToAbsolutePath() |
| C. | prepareToRead() |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 15. |
__________ 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() | |
| 16. |
_________ are scanned in the order they are specified on the command line. |
| A. | Command line parameters |
| B. | Parameter files |
| C. | Declare and default preprocessors |
| D. | Both parameter files and command line parameters |
| Answer» E. | |
| 17. |
In comparison to SQL, Pig uses : |
| A. | Lazy evaluation |
| B. | ETL |
| C. | Supports pipeline splits |
| D. | All of the mentioned |
| Answer» E. | |
| 18. |
Pig Latin is _______ and fits very naturally in the pipeline paradigm while SQL is instead declarative. |
| A. | functional |
| B. | procedural |
| C. | declarative |
| D. | all of the mentioned |
| Answer» C. declarative | |
| 19. |
You can specify parameter names and parameter values in one of the ways: |
| A. | As part of a command line. |
| B. | In parameter file, as part of a command line |
| C. | With the declare statement, as part of Pig script |
| D. | All of the mentioned |
| Answer» E. | |
| 20. |
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 | |