MCQOPTIONS
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MCQOPTIONS
This section includes 230 Mcqs, each offering curated multiple-choice questions to sharpen your Technical Programming knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
This gathering of data can be? |
| A. | scheduled |
| B. | event-driven |
| C. | user-defined |
| D. | both a and b |
| Answer» E. | |
| 152. |
Which of the following is the slowest compression technique? |
| A. | LZO |
| B. | Bzip2 |
| C. | Gzip |
| D. | All of the mentioned |
| Answer» C. Gzip | |
| 153. |
Which of the following supports splittable compression? |
| A. | LZO |
| B. | Bzip2 |
| C. | Gzip |
| D. | All of the mentioned |
| Answer» B. Bzip2 | |
| 154. |
__________ typically compresses files to within 10% to 15% of the best available techniques. |
| A. | LZO |
| B. | Bzip2 |
| C. | Gzip |
| D. | All of the mentioned |
| Answer» C. Gzip | |
| 155. |
The LZO compression format is composed of approximately __________ blocks of compressed data. |
| A. | 128k |
| B. | 256k |
| C. | 24k |
| D. | 36k |
| Answer» C. 24k | |
| 156. |
The ________ method in the ModelCountReducer class “reduces” the values the mapper collects into a derived value. |
| A. | count |
| B. | add |
| C. | reduce |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 157. |
Which of the following is based on the DEFLATE algorithm? |
| A. | LZO |
| B. | Bzip2 |
| C. | Gzip |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 158. |
Avro schemas describe the format of the message and are defined using ______________ |
| A. | JSON |
| B. | XML |
| C. | JS |
| D. | All of the mentioned |
| Answer» B. XML | |
| 159. |
Which of the following works well with Avro? |
| A. | Lucene |
| B. | kafka |
| C. | MapReduce |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 160. |
Apache _______ is a serialization framework that produces data in a compact binary format. |
| A. | Oozie |
| B. | Impala |
| C. | kafka |
| D. | Avro |
| Answer» E. | |
| 161. |
When using reflection to automatically build our schemas without code generation, we need to configure Avro using? |
| A. | AvroJob.Reflect(jConf); |
| B. | AvroJob.setReflect(jConf); |
| C. | Job.setReflect(jConf); |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 162. |
With ______ we can store data and read it easily with various programming languages. |
| A. | Thrift |
| B. | Protocol Buffers |
| C. | Avro |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 163. |
Which of the following is a primitive data type in Avro? |
| A. | |
| B. | boolean |
| C. | float |
| D. | all of the mentioned |
| Answer» E. | |
| 164. |
________ are encoded as a series of blocks. |
| A. | Arrays |
| B. | Enum |
| C. | Unions |
| D. | Maps |
| Answer» B. Enum | |
| 165. |
The __________ codec uses Google’s Snappy compression library. |
| A. | |
| B. | snappy |
| C. | deflate |
| D. | none of the mentioned |
| Answer» C. deflate | |
| 166. |
BatchEE projects aims to provide an _________ implementation. (aka JSR352) |
| A. | JBat |
| B. | JBatch |
| C. | JBash |
| D. | None of the mentioned |
| Answer» C. JBash | |
| 167. |
_________ allows database-like access, and in particular a SQL interface. |
| A. | JBatch |
| B. | Calcite |
| C. | Blur |
| D. | All of the mentioned |
| Answer» C. Blur | |
| 168. |
___________ is a toolkit/application for converting between and editing common office file formats. |
| A. | Droids |
| B. | DataFu |
| C. | Corinthia |
| D. | Ignite |
| Answer» D. Ignite | |
| 169. |
Spark runs on top of ___________ a cluster manager system which provides efficient resource isolation across distributed applications. |
| A. | Mesjs |
| B. | Mesos |
| C. | Mesus |
| D. | All of the mentioned |
| Answer» C. Mesus | |
| 170. |
Users can easily run Spark on top of Amazon’s __________ |
| A. | Infosphere |
| B. | EC2 |
| C. | EMR |
| D. | None of the mentioned |
| Answer» C. EMR | |
| 171. |
Spark architecture is ___________ times as fast as Hadoop disk-based Apache Mahout and even scales better than Vowpal Wabbit. |
| A. | 10 |
| B. | 20 |
| C. | 50 |
| D. | 100 |
| Answer» B. 20 | |
| 172. |
____________ is a distributed machine learning framework on top of Spark. |
| A. | MLlib |
| B. | Spark Streaming |
| C. | GraphX |
| D. | RDDs |
| Answer» B. Spark Streaming | |
| 173. |
GraphX provides an API for expressing graph computation that can model the __________ abstraction. |
| A. | GaAdt |
| B. | Spark Core |
| C. | Pregel |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 174. |
____________ data file takes is based on avro serialization framework which was primarily created for hadoop. |
| A. | Oozie |
| B. | Avro |
| C. | cTakes |
| D. | Lucene |
| Answer» C. cTakes | |
| 175. |
Which of the following compression is similar to Snappy compression? |
| A. | LZO |
| B. | Bzip2 |
| C. | Gzip |
| D. | All of the mentioned |
| Answer» B. Bzip2 | |
| 176. |
How many formats of SequenceFile are present in Hadoop I/O? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» C. 4 | |
| 177. |
Which of the following format is more compression-aggressive? |
| A. | Partition Compressed |
| B. | Record Compressed |
| C. | Block-Compressed |
| D. | Uncompressed |
| Answer» D. Uncompressed | |
| 178. |
Point out the correct statement : |
| A. | All hadoop commands are invoked by the bin/hadoop script |
| B. | Hadoop has an option parsing framework that employs only parsing generic options |
| C. | archive command creates a hadoop archive |
| D. | All of the mentioned |
| Answer» B. Hadoop has an option parsing framework that employs only parsing generic options | |
| 179. |
__________ Manager’s Service feature monitors dozens of service health and performance metrics about the services and role instances running on your cluster. |
| A. | Microsoft |
| B. | Cloudera |
| C. | Amazon |
| D. | None of the mentioned |
| Answer» C. Amazon | |
| 180. |
Which of the following is a common reason to restart hadoop process ? |
| A. | Upgrade Hadoop |
| B. | React to incidents |
| C. | Remove worker nodes |
| D. | All of the mentioned |
| Answer» E. | |
| 181. |
__________ mode is a Namenode state in which it does not accept changes to the name space. |
| A. | Recover |
| B. | Safe |
| C. | Rollback |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 182. |
_________ command is used to copy file or directories recursively. |
| A. | dtcp |
| B. | distcp |
| C. | dcp |
| D. | distc |
| Answer» C. dcp | |
| 183. |
Point out the wrong statement : |
| A. | classNAME displays the class name needed to get the Hadoop jar |
| B. | Balancer Runs a cluster balancing utility |
| C. | An administrator can simply press Ctrl-C to stop the rebalancing process |
| D. | None of the mentioned |
| Answer» B. Balancer Runs a cluster balancing utility | |
| 184. |
The updated queue configuration should be a valid one i.e. queue-capacity at each level should be equal to : |
| A. | 50% |
| B. | 75% |
| C. | 100% |
| D. | 0% |
| Answer» D. 0% | |
| 185. |
Apache Hadoop YARN stands for : |
| A. | Yet Another Reserve Negotiator |
| B. | Yet Another Resource Network |
| C. | Yet Another Resource Negotiator |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 186. |
Although the Hadoop framework is implemented in Java , MapReduce applications need not be written in : |
| A. | Java |
| B. | C |
| C. | C# |
| D. | None of the mentioned |
| Answer» B. C | |
| 187. |
The __________ provides a proxy between the web applications exported by an application and an end user. |
| A. | ProxyServer |
| B. | WebAppProxy |
| C. | WebProxy |
| D. | None of the mentioned |
| Answer» C. WebProxy | |
| 188. |
In order to turn on RPC authentication in hadoop, set the value of hadoop.security.authentication property to : |
| A. | zero |
| B. | kerberos |
| C. | false |
| D. | None of the mentioned |
| Answer» C. false | |
| 189. |
__________ get events indicating completion (success/failure) of component tasks. |
| A. | getJobName() |
| B. | getJobState() |
| C. | getPriority() |
| D. | getTaskCompletionEvents(int startFrom) |
| Answer» E. | |
| 190. |
Which of the following method is used to get user-specified job name ? |
| A. | getJobName() |
| B. | getJobState() |
| C. | getPriority() |
| D. | All of the mentioned |
| Answer» B. getJobState() | |
| 191. |
Which of the following is only for storage with limited compute ? |
| A. | Hot |
| B. | Cold |
| C. | Warm |
| D. | All_SSD |
| Answer» C. Warm | |
| 192. |
Which of the following storage policy is used for both storage and compute ? |
| A. | Hot |
| B. | Cold |
| C. | Warm |
| D. | All_SSD |
| Answer» B. Cold | |
| 193. |
_________ method clears all keys from the configuration. |
| A. | clear |
| B. | addResource |
| C. | getClass |
| D. | None of the mentioned |
| Answer» B. addResource | |
| 194. |
______________ is another implementation of the MapRunnable interface that runs mappers concurrently in a configurable number of threads. |
| A. | MultithreadedRunner |
| B. | MultithreadedMap |
| C. | MultithreadedMapRunner |
| D. | SinglethreadedMapRunner |
| Answer» D. SinglethreadedMapRunner | |
| 195. |
An ___________ is responsible for creating the input splits, and dividing them into records. |
| A. | TextOutputFormat |
| B. | TextInputFormat |
| C. | OutputInputFormat |
| D. | InputFormat |
| Answer» E. | |
| 196. |
__________ class allows you to specify the InputFormat and Mapper to use on a per-path basis. |
| A. | MultipleOutputs |
| B. | MultipleInputs |
| C. | SingleInputs |
| D. | None of the mentioned |
| Answer» C. SingleInputs | |
| 197. |
__________ is a variant of SequenceFileInputFormat that converts the sequence file’s keys and values to Text objects |
| A. | SequenceFile |
| B. | SequenceFileAsTextInputFormat |
| C. | SequenceAsTextInputFormat |
| D. | All of the mentioned |
| Answer» C. SequenceAsTextInputFormat | |
| 198. |
______________ class allows the Map/Reduce framework to partition the map outputs based on certain key fields, not the whole keys. |
| A. | KeyFieldPartitioner |
| B. | KeyFieldBasedPartitioner |
| C. | KeyFieldBased |
| D. | None of the mentioned |
| Answer» C. KeyFieldBased | |
| 199. |
The ________ option allows you to copy jars locally to the current working directory of tasks and automatically unjar the files. |
| A. | archives |
| B. | files |
| C. | task |
| D. | None of the mentioned |
| Answer» B. files | |
| 200. |
Which is the most popular NoSQL database for scalable big data store with Hadoop ? |
| A. | Hbase |
| B. | MongoDB |
| C. | Cassandra |
| D. | None of the mentioned |
| Answer» B. MongoDB | |