Hadoop Zookeeper MCQs

This section focuses on "ZooKeeper" in Hadoop. These Multiple Choice Questions (MCQ) should be practiced to improve the Hadoop skills required for various interviews (campus interviews, walk-in interviews, company interviews), placements, entrance exams and other competitive examinations.

1. which of the following is incorrect statement?

A. ZooKeeper is a distributed co-ordination service to manage large set of hosts.
B. ZooKeeper allows developers to focus on core application logic without worrying about the distributed nature of the application.
C. ZooKeeper solves this issue with its simple architecture and API.
D. The ZooKeeper framework was originally built at "Google" for accessing their applications in an easy and robust manner

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2. Which of the following is a benefits of distributed applications?

A. Scalability
B. Transparency
C. Reliability
D. All of the above

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3. ZooKeeper itself is intended to be replicated over a sets of hosts called ____________.

A. chunks
B. ensemble
C. subdomains
D. None of the above

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4. The underlying client-server protocol has changed in version _______ of ZooKeeper.

A. 3.0.0
B. 3.1.0
C. 3.1.1
D. 4.0.0

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5. Point out the wrong statement.

A. Cluster-wide status centralization service is essential for management and serialization tasks across a large distributed set of servers
B. Within ZooKeeper, an application can create what is called a znode
C. The znode can be updated by any node in the cluster, and any node in the cluster can register to be informed of changes to that znode
D. None of the above

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6. Helprace is using ZooKeeper on a _______ cluster in conjunction with Hadoop and HBase.

A. 3-node
B. 2-node
C. 5-node
D. 4-node

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7. Which of the following is correct challenges that are faced by distributed applications?

A. Race condition
B. Deadlock
C. consistency
D. Both A and B

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8. You need to have _________ installed before running ZooKeeper.

A. C
B. C++
C. Java
D. Python

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9. How many types of special znodes are present in Zookeeper?

A. 2
B. 3
C. 4
D. 5

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10. Which of the following is not a services provided by ZooKeeper?

A. Naming service
B. Identity Service
C. Leader election
D. Cluster management

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