MCQOPTIONS
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MCQOPTIONS
This section includes 32 Mcqs, each offering curated multiple-choice questions to sharpen your Operating System knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In distributed file system, file name does not reveal the file’s ___________ |
| A. | local name |
| B. | physical storage location |
| C. | both local name and physical storage location |
| D. | none of the mentioned |
| Answer» C. both local name and physical storage location | |
| 2. |
In a distributed file system, when a file’s physical storage location changes ___________ |
| A. | file name need to be changed |
| B. | file name need not to be changed |
| C. | file’s host name need to be changed |
| D. | file’s local name need to be changed |
| Answer» C. file’s host name need to be changed | |
| 3. |
HDFS is implemented in _____________ language. |
| A. | Perl |
| B. | Python |
| C. | Java |
| D. | C |
| Answer» D. C | |
| 4. |
Which of the following is not features Of HDFS? |
| A. | It is suitable for the distributed storage and processing. |
| B. | Streaming access to file system data. |
| C. | HDFS provides file permissions and authentication. |
| D. | Hadoop does not provides a command interface to interact with HDFS. |
| Answer» E. | |
| 5. |
Which hdfs command is used to check for various inconsistencies? |
| A. | fsk |
| B. | fsck |
| C. | fetchdt |
| D. | none of the mentioned |
| Answer» C. fetchdt | |
| 6. |
The default block size is ______. |
| A. | 32MB |
| B. | 64MB |
| C. | 128MB |
| D. | 16MB |
| Answer» C. 128MB | |
| 7. |
Reducer is input the grouped output of a ____________ |
| A. | Mapper |
| B. | Reducer |
| C. | Writable |
| D. | Readable |
| Answer» B. Reducer | |
| 8. |
Which of the following are the Goals of HDFS? |
| A. | Fault detection and recovery |
| B. | Huge datasets |
| C. | Hardware at data |
| D. | All of the above |
| Answer» E. | |
| 9. |
The minimum amount of data that HDFS can read or write is called a _____________. |
| A. | Datanode |
| B. | Namenode |
| C. | Block |
| D. | None of the above |
| Answer» D. None of the above | |
| 10. |
What is full form of HDFS? |
| A. | Hadoop File System |
| B. | Hadoop Field System |
| C. | Hadoop File Search |
| D. | Hadoop Field search |
| Answer» B. Hadoop Field System | |
| 11. |
For every node (Commodity hardware/System) in a cluster, there will be a _________. |
| A. | Datanode |
| B. | Namenode |
| C. | Block |
| D. | None of the above |
| Answer» B. Namenode | |
| 12. |
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. | |
| 13. |
__________ 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 | |
| 14. |
Which of the following parameter is to collect keys and combined values? |
| A. | key |
| B. | values |
| C. | reporter |
| D. | output |
| Answer» E. | |
| 15. |
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 | |
| 16. |
Which of the following parameter describes destination directory which would contain the archive? |
| A. | -archiveName <name> |
| B. | <source> |
| C. | <destination> |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 17. |
Which of the following is used for the MapReduce job Tracker node? |
| A. | mradmin |
| B. | tasktracker |
| C. | jobtracker |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 18. |
Which of the following is a common hadoop maintenance issue? |
| A. | Lack of tools |
| B. | Lack of configuration management |
| C. | Lack of web interface |
| D. | None of the mentioned |
| Answer» C. Lack of web interface | |
| 19. |
Which of the following is a configuration management system? |
| A. | Alex |
| B. | Puppet |
| C. | Acem |
| D. | None of the mentioned |
| Answer» C. Acem | |
| 20. |
Which of the tab shows all the role instances that have been instantiated for this service? |
| A. | Service |
| B. | Status |
| C. | Instance |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 21. |
Which of the following command runs the HDFS secondary namenode? |
| A. | secondary namenode |
| B. | secondarynamenode |
| C. | secondary_namenode |
| D. | none of the mentioned |
| Answer» C. secondary_namenode | |
| 22. |
Which of the following is a valid syntax for hadoop archive? |
| A. | hadooparchive [ Generic Options ] archive |
| B. | hadooparch [ Generic Options ] archive |
| C. | hadoop [ Generic Options ] archive |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 23. |
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 | |
| 24. |
_____________ is used to read data from bytes buffers. |
| A. | write() |
| B. | read() |
| C. | readwrite() |
| D. | all of the mentioned |
| Answer» B. read() | |
| 25. |
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 | |
| 26. |
The need for data replication can arise in various scenarios like ____________ |
| A. | Replication Factor is changed |
| B. | DataNode goes down |
| C. | Data Blocks get corrupted |
| D. | All of the mentioned |
| Answer» E. | |
| 27. |
HDFS works in a __________ fashion. |
| A. | master-worker |
| B. | master-slave |
| C. | worker/slave |
| D. | all of the mentioned |
| Answer» B. master-slave | |
| 28. |
Which of the following scenario may not be a good fit for HDFS? |
| A. | HDFS is not suitable for scenarios requiring multiple/simultaneous writes to the same file |
| B. | HDFS is suitable for storing data related to applications requiring low latency data access |
| C. | HDFS is suitable for storing data related to applications requiring low latency data access |
| D. | None of the mentioned |
| Answer» B. HDFS is suitable for storing data related to applications requiring low latency data access | |
| 29. |
For ________ the HBase Master UI provides information about the HBase Master uptime. |
| A. | HBase |
| B. | Oozie |
| C. | Kafka |
| D. | All of the mentioned |
| Answer» B. Oozie | |
| 30. |
WHICH_ONE_OF_THE_FOLLOWING_IS_A_DISTRIBUTED_FILE_SYSTEM??$ |
| A. | andrew file system |
| B. | network file system |
| C. | novel network |
| D. | all of the mentioned |
| Answer» E. | |
| 31. |
In distributed file system, file name does not reveal the file’?# |
| A. | local name |
| B. | physical storage location |
| C. | both local name and physical storage location |
| D. | none of the mentioned |
| Answer» C. both local name and physical storage location | |
| 32. |
In distributed file system, when a file’s physical storage location changes$ |
| A. | file name need to be changed |
| B. | file name need not to be changed |
| C. | file’s host name need to be changed |
| D. | file’s local name need to be changed |
| Answer» C. file‚Äö√Ñ√∂‚àö√ë‚àö¬•s host name need to be changed | |