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 - Which of the following is true for disk drives over a period of time?
A - Data Seek time is improving faster than data transfer rate.
B - Data Seek time is improving more slowly than data transfer rate.
C - Data Seek time and data transfer rate are both increasing proportionately.
D - Only the storage capacity is increasing without increase in data transfer rate.
Answer : B
Q 2 - The main goal of HDFS High availability is
A - Faster creation of the replicas of primary namenode.
C - Prevent data loss due to failure of primary namenode.
D - Prevent the primary namenode form becoming single point of failure.
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 - Underreplication in HDFS means-
A - No replication is happening in the data nodes.
B - Replication process is very slow in the data nodes.
C - The frequency of replication in data nodes is very low.
D - The number of replicated copies is less than as specified by the replication factor.
Answer : D
Q 5 - In Hadoop, Snappy and LZO are examples of
A - Mechanisms of file transport between data nodes
B - Mechanisms of data compression
Answer : B
Q 6 - When a backup node is used in a cluster there is no need of
Answer : A
Q 7 - The archive file created in Hadoop always has the extension of
Answer : B
Q 8 - The namenode loses its only copy of fsimage file. We can recover this from
Answer : C
Q 9 - Which one of the following nodes manages other nodes?
Answer : A
Q 10 - The org.apache.hadoop.io.Writable interface declares which two methods? (Choose 2 answers.)
public void readFields(DataInput).
public void read(DataInput).
public void writeFields(DataOutput).
public void write(DataOutput).
