Cloudera Apache Hadoop Administration Quiz Questions and Answers

Which of the following features is not provided by Impala?

Answer :
  • ACID

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

Which is the most popular NoSQL database for scalable big data stores with Hadoop?

Answer :
  • HBase

Explanation :

HBase is the Hadoop database: a distributed, scalable Big Data store that lets you host very large tables — billions of rows multiplied by millions of columns — on clusters built with commodity hardware

Hive also support custom extensions written in ___________.

Answer :
  • Java

Explanation :

Hive also support custom extensions written in Java, including user-defined functions (UDFs) and serializer-deserializers for reading and optionally writing custom formats

___________ mode allows you to suppress alerts for a host, service, role, or even the entire cluster.

Answer :
  • Maintenance

Explanation :

Maintenance mode can be useful when you need to take actions in your cluster and do not want to see the alerts that will be generated due to those actions

________ systems are scale-out file-based (HDD) systems moving to more uses of memory in the nodes.

Answer :
  • NoSQL

Explanation :

NoSQL systems make the most sense whenever the application is based on data with varying data types and the data can be stored in key-value notation

Which of the following is a common Hadoop maintenance issue?

Answer :
  • Lack of configuration management

Explanation :

Without a centralized configuration management framework, you end up with a number of issues that can cascade just as your usage picks up

Which of the tab shows all the role instances that have been instantiated for this service?

Answer :
  • Instance

Explanation :

The Instances page displays the results of the configuration validation checks it performs for all the role instances for this service

__________ refers to incremental costs with no major impact on solution design, performance and complexity.

Answer :
  • Scale-up

Explanation :

Adding more CPU/RAM/Disk capacity to Hadoop DataNode that is already part of a cluster does not require additional network switches

________ is a platform for constructing data flows for extract, transform, and load (ETL) processing and analysis of large datasets.

Answer :
  • Pig

Explanation :

Apache Pig is a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs

NameNode is monitored and upgraded in a __________ transition.

Answer :
  • SecureMode

Explanation :

The HDFS service has some unique functions that may result in additional information on its Status and Instances pages