Hadoop Online Quiz

Q 1 - HDFS files are designed for

A - Multiple writers and modifications at arbitrary offsets.

B - Only append at the end of file

C - Writing into a file only once.

D - Low latency data access.

Q 2 - In the local disk of the namenode the files which are stored persistently are −

A - namespace image and edit log

B - block locations and namespace image

C - edit log and block locations

D - Namespace image, edit log and block locations.

Q 3 - When running on a pseudo distributed mode the replication factor is set to

A - 2

B - 1

C - 0

D - 3

Q 4 - The information mapping data blocks with their corresponding files is stored in

A - Data node

B - Job Tracker

C - Task Tracker

D - Namenode

Q 5 - In the secondary namenode the amount of memory needed is

A - Similar to that of primary node

B - Should be at least half of the primary node

C - Must be double of that of primary node

D - Depends only on the number of data nodes it is going to handle

Q 6 - YARN stands for

A - Yahoo’s another resource name

B - Yet another resource negotiator

C - Yahoo’s archived Resource names

D - Yet another resource need.

Q 7 - The replication factor of a file in HDFS can be changed using

A - changerep

B - rerep

C - setrep

D - xrep

Q 8 - Which of the following is not a scheduling option available in YARN

A - Balanced scheduler

B - Fair scheduler

C - Capacity scheduler

D - FiFO schesduler.

Q 9 - Which one of the following is not true regarding to Hadoop?

A - It is a distributed framework.

B - The main algorithm used in it is Map Reduce

C - It runs with commodity hard ware

D - All are true

Q 10 - Keys from the output of shuffle and sort implement which of the following interface?

A - Writable.

B - WritableComparable.

C - Configurable.

D - ComparableWritable.

E - Comparable.