Hadoop Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to Hadoop Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - HDFS files are designed for
A - Multiple writers and modifications at arbitrary offsets.
B - Only append at the end of file
Answer : B
Q 2 - Zookeeper ensures that
A - All the namenodes are actively serving the client requests
B - Only one namenode is actively serving the client requests
Answer : B
Q 3 - Which scenario demands highest bandwidth for data transfer between nodes in Hadoop?
A - Different nodes on the same rack
B - Nodes on different racks in the same data center.
Answer : C
Q 4 - The file in Namenode which stores the information mapping the data block location with file name is −
Answer : C
Q 5 - The output of a mapper task is
A - The Key-value pair of all the records of the dataset.
B - The Key-value pair of all the records from the input split processed by the mapper
Answer : B
Q 6 - When a file in HDFS is deleted by a user
B - It goes to trash if configured.
C - It becomes hidden from the user but stays in the file system
Answer : B
Q 7 - The current limiting factor to the size of a hadoop cluster is
A - Excess heat generated in data center
B - Upper limit of the network bandwidth
Answer : C
Q 8 - Which of the following is not a scheduling option available in YARN
Answer : A
Q 9 - Which one of the following nodes manages other nodes?
Answer : A
Q 10 - Which of the following are among the duties of the Data Nodes in HDFS?
A - Maintain the file system tree and metadata for all files and directories.
B - None of the options is correct.
C - Control the execution of an individual map task or a reduce task.
D - Store and retrieve blocks when told to by clients or the NameNode.