This set of Hadoop Multiple Choice Questions & Answers (MCQs) focuses on “Impala”.
1. __________ is a fully integrated, state-of-the-art analytic database architected specifically to leverage strengths of Hadoop.
a) Oozie
b) Impala
c) Lucene
d) BigTop
View Answer
Explanation: Impala provides scalability and flexibility to hadoop.
2. Point out the correct statement.
a) With Impala, more users, whether using SQL queries or BI applications, can interact with more data
b) Technical support for Impala is not available via a Cloudera Enterprise subscription
c) Impala is proprietary tool for Hadoop
d) None of the mentioned
View Answer
Explanation: It is possible through a single repository and metadata store from source through analysis.
3. Impala is an integrated part of a ____________ enterprise data hub.
a) MicroSoft
b) IBM
c) Cloudera
d) All of the mentioned
View Answer
Explanation: Impala is open source (Apache License), so you can self-support in perpetuity if you wish.
4. For Apache __________ users, Impala utilizes the same metadata.
a) cTakes
b) Hive
c) Pig
d) Oozie
View Answer
Explanation: You don’t have to worry about re-inventing the implementation wheel.
5. Point out the wrong statement.
a) For Apache Hive users, Impala utilizes the same metadata, ODBC driver, SQL syntax, and user interface as Hive
b) Impala provides high latency and low concurrency
c) Impala also scales linearly, even in multi tenant environments
d) All of the mentioned
View Answer
Explanation: Impala provides low latency and high concurrency.
6. Impala is integrated with native Hadoop security and Kerberos for authentication via __________ module.
a) Sentinue
b) Sentry
c) Sentinar
d) All of the mentioned
View Answer
Explanation: Via the Sentry module, you can ensure that the right users and applications are authorized for the right data.
7. Which of the following companies shipped Impala?
a) Amazon
b) Oracle
c) MapR
d) All of the mentioned
View Answer
Explanation: Impala is shipped by Cloudera, MapR, Oracle, and Amazon.
8. ____________ analytics is a work in progress with Impala.
a) Reproductive
b) Exploratory
c) Predictive
d) All of the mentioned
View Answer
Explanation: Impala is the de facto standard for open source interactive business intelligence and data discovery.
9. Which of the following features is not provided by Impala?
a) SQL functionality
b) ACID
c) Flexibility
d) None of the mentioned
View Answer
Explanation: Impala combines all of the benefits of other Hadoop frameworks, including flexibility, scalability, and cost-effectiveness, with the performance, usability, and SQL functionality necessary for an enterprise-grade analytic database.
10. Which of the following hadoop file formats is supported by Impala?
a) SequenceFile
b) Avro
c) RCFile
d) All of the mentioned
View Answer
Explanation: Impala reads Hadoop file formats, including text, LZO, SequenceFile, Avro, RCFile, and Parquet.
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