Data Integrity Interview Questions

Data Integrity interview questions

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Total Questions: 5

1. The HDFS client software implements __________ checking on the contents of HDFS files.

A. metastore

B. parity

C. checksum

D. none of the mentioned

Correct Answer is : checksum

2. Point out the correct statement :

A. The HDFS architecture is compatible with data rebalancing schemes

B. Datablocks support storing a copy of data at a particular instant of time

C. HDFS currently support snapshots

D. None of the mentioned

Correct Answer is : The HDFS architecture is compatible with data rebalancing schemes

3. The ___________ machine is a single point of failure for an HDFS cluster.

A. DataNode

B. NameNode

C. ActionNode

D. All of the mentioned

Correct Answer is : NameNode

4. The ____________ and the EditLog are central data structures of HDFS.

A. DsImage

B. FsImage

C. FsImages

D. All of the mentioned

Correct Answer is : FsImage

5. Point out the wrong statement :

A. HDFS is designed to support small files only

B. Any update to either the FsImage or EditLog causes each of the FsImages and EditLogs to get updated synchronously

C. NameNode can be configured to support maintaining multiple copies of the FsImage and EditLog

D. None of the mentioned

Correct Answer is : HDFS is designed to support small files only

Data Integrity interview questions