MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your Hadoop knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Output of the mapper is first written on the local disk for sorting and _________ process. |
| A. | shuffling |
| B. | secondary sorting |
| C. | forking |
| D. | reducing |
| Answer» B. secondary sorting | |
| 2. |
__________ controls the partitioning of the keys of the intermediate map-outputs. |
| A. | Collector |
| B. | Partitioner |
| C. | InputFormat |
| D. | None of the mentioned |
| Answer» C. InputFormat | |
| 3. |
The JobTracker pushes work out to available _______ nodes in the cluster, striving to keep the work as close to the data as possible. |
| A. | DataNodes |
| B. | TaskTracker |
| C. | ActionNodes |
| D. | All of the mentioned |
| Answer» C. ActionNodes | |
| 4. |
OUTPUT_OF_THE_MAPPER_IS_FIRST_WRITTEN_ON_THE_LOCAL_DISK_FOR_SORTING_AND___________PROCESS.?$ |
| A. | shuffling |
| B. | secondary sorting |
| C. | forking |
| D. | reducing |
| Answer» B. secondary sorting | |
| 5. |
__________ controls the partitioning of the keys of the intermediate map-outputs? |
| A. | Collector |
| B. | Partitioner |
| C. | InputFormat |
| D. | None of the mentioned |
| Answer» C. InputFormat | |
| 6. |
The default InputFormat is __________ which treats each value of input a new value and the associated key is byte offset. |
| A. | TextFormat |
| B. | TextInputFormat |
| C. | InputFormat |
| D. | All of the mentioned |
| Answer» C. InputFormat | |
| 7. |
On a tasktracker, the map task passes the split to the createRecordReader() method on InputFormat to obtain a _________ for that split. |
| A. | InputReader |
| B. | RecordReader |
| C. | OutputReader |
| D. | None of the mentioned |
| Answer» C. OutputReader | |
| 8. |
InputFormat class calls the ________ function and computes splits for each file and then sends them to the jobtracker. |
| A. | puts |
| B. | gets |
| C. | getSplits |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 9. |
The JobTracker pushes work out to available _______ nodes in the cluster, striving to keep the work as close to the data as possible |
| A. | DataNodes |
| B. | TaskTracker |
| C. | ActionNodes |
| D. | All of the mentioned |
| Answer» C. ActionNodes | |
| 10. |
The daemons associated with the MapReduce phase are ________ and task-trackers. |
| A. | job-tracker |
| B. | map-tracker |
| C. | reduce-tracker |
| D. | all of the mentioned |
| Answer» B. map-tracker | |
| 11. |
________ is a programming model designed for processing large volumes of data in parallel by dividing the work into a set of independent tasks. |
| A. | Hive |
| B. | MapReduce |
| C. | Pig |
| D. | Lucene |
| Answer» C. Pig | |