MCQOPTIONS
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MCQOPTIONS
This section includes 8 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 parameter is to collect keys and combined values? |
| A. | key |
| B. | values |
| C. | reporter |
| D. | output |
| Answer» E. | |
| 2. |
Applications can use the _________ provided to report progress or just indicate that they are alive. |
| A. | Collector |
| B. | Reporter |
| C. | Dashboard |
| D. | None of the mentioned |
| Answer» C. Dashboard | |
| 3. |
The output of the reduce task is typically written to the FileSystem via ____________ |
| A. | OutputCollector |
| B. | InputCollector |
| C. | OutputCollect |
| D. | All of the mentioned |
| Answer» B. InputCollector | |
| 4. |
Reducer is input the grouped output of a ____________ |
| A. | Mapper |
| B. | Reducer |
| C. | Writable |
| D. | Readable |
| Answer» B. Reducer | |
| 5. |
Interface ____________ reduces a set of intermediate values which share a key to a smaller set of values. |
| A. | Mapper |
| B. | Reducer |
| C. | Writable |
| D. | Readable |
| Answer» C. Writable | |
| 6. |
_____________ is used to read data from bytes buffers. |
| A. | write() |
| B. | read() |
| C. | readwrite() |
| D. | all of the mentioned |
| Answer» B. read() | |
| 7. |
______________ is method to copy byte from input stream to any other stream in Hadoop. |
| A. | IOUtils |
| B. | Utils |
| C. | IUtils |
| D. | All of the mentioned |
| Answer» B. Utils | |
| 8. |
In order to read any file in HDFS, instance of __________ is required. |
| A. | filesystem |
| B. | datastream |
| C. | outstream |
| D. | inputstream |
| Answer» B. datastream | |