Hadoop Questions and Answers – Kafka with Hadoop – 1

This set of Hadoop Multiple Choice Questions & Answers (MCQs) focuses on “Kafka with Hadoop – 1”.

1. Kafka is comparable to traditional messaging systems such as _____________
a) Impala
b) ActiveMQ
c) BigTop
d) Zookeeper
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2. Point out the correct statement.
a) The original use case for Kafka was to be able to rebuild a user activity tracking pipeline as a set of real-time publish-subscribe feeds
b) Activity tracking is often very high volume as many activity messages are generated for each user page view
c) Kafka is often used for operational monitoring data
d) All of the mentioned
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3. Many people use Kafka as a replacement for a ___________ solution.
a) log aggregation
b) compaction
c) collection
d) all of the mentioned
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4. _______________ is a style of application design where state changes are logged as a time-ordered sequence of records.
a) Event sourcing
b) Commit Log
c) Stream Processing
d) None of the mentioned
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5. Point out the wrong statement.
a) Kafka can serve as a kind of external commit-log for a distributed system
b) The log helps replicate data between nodes and acts as a re-syncing mechanism for failed nodes to restore their data
c) Kafka comes with a command-line client that will take input from a file or from standard input and send it out as messages to the Kafka cluster
d) All of the mentioned
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6. Kafka uses __________ so you need to first start a ZooKeeper server if you don’t already have one.
a) Impala
b) ActiveMQ
c) BigTop
d) Zookeeper
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7. __________ is the node responsible for all reads and writes for the given partition.
a) replicas
b) leader
c) follower
d) isr
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8. __________ is the subset of the replicas list that is currently alive and caught up to the leader.
a) replicas
b) leader
c) follower
d) isr
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9. Kafka uses key-value pairs in the ____________ file format for configuration.
a) RFC
b) Avro
c) Property
d) None of the mentioned
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10. __________ is the amount of time to keep a log segment before it is deleted.
a) log.cleaner.enable
b) log.retention
c) log.index.enable
d) log.flush.interval.message
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