Describe Apache Flink and Its Architecture DATA-ENGINEERING-OPTIMIZE Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Where is the state of a Flink operator typically stored during execution?

   • AIn the client's memory
   • BIn a distributed file system like HDFS
   • CIn a central database managed by the JobManager
   • DIn the local memory or disk of the TaskManager
   Reveal Solution Discussion Select an answer first
2. 7application · medium

   A Flink job has a parallelism of 8, but the cluster has only 4 task slots available. What will happen when the job is submitted?

   • AThe job will fail to start because there are not enough slots
   • BThe job will run but with reduced performance
   • CThe job will run with a parallelism of 8 by sharing slots
   • DThe job will run with a parallelism of 4
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   Which component in Apache Flink's architecture is responsible for submitting jobs to the cluster?

   • ATaskManager
   • BResource Manager
   • CJobManager
   • DClient
   Reveal Solution Discussion Select an answer first
5. 9foundation · easy

   What is the purpose of watermarks in Apache Flink's event time processing?

   • ATo indicate the progress of event time and handle out-of-order events
   • BTo synchronize the clocks of all TaskManagers
   • CTo encrypt the data stream for security
   • DTo compress the data stream to reduce storage
   Reveal Solution Discussion Select an answer first
6. 10application · medium

   A Flink cluster is running multiple jobs. One job's TaskManager fails. What is the impact on the other jobs?

   • AThe cluster will shut down and require manual restart
   • BThe JobManager will restart all jobs to maintain consistency
   • CAll jobs will fail because the TaskManager is shared
   • DOnly the job that had tasks on that TaskManager will be affected
   Reveal Solution Discussion Select an answer first