Which of the following commnd runs a DFS admin client?
dfsadmin
Explanation: dfsadmin : Runs a DFS admin client.
adminsck
nameadmin
secondaryadminnode
Category: Big Data Technology
Which of the following is used for an execution of a Mapper or a Reducer on a slice of data?
Which of the following is used for an execution of a Mapper or a Reducer on a slice of data?
Task
Explanation: Task : An execution of a Mapper or a Reducer on a slice of data.
Job
Mapper
PayLoad
Which of the following is used to schedules jobs and tracks the assign jobs to Task tracker?
Which of the following is used to schedules jobs and tracks the assign jobs to Task tracker?
JobTracker
Explanation: JobTracker : Schedules jobs and tracks the assign jobs to Task tracker.
SlaveNode
MasterNode
Task Tracker
In how many stages the MapReduce program executes?
In how many stages the MapReduce program executes?
3
Explanation: MapReduce program executes in three stages, namely map stage, shuffle stage, and reduce stage.
2
4
5
______ task, which takes the output from a map as an input and combines those data tuples into a smaller set of tuples.
______ task, which takes the output from a map as an input and combines those data tuples into a smaller set of tuples.
Reduce
Explanation: Reduce task, which takes the output from a map as an input and combines those data tuples into a smaller set of tuples.
Map
Node
None of the Option is Correct
_____ takes a set of data and converts it into another set of data, where individual elements are broken down into tuples (key/value pairs).
_____ takes a set of data and converts it into another set of data, where individual elements are broken down into tuples (key/value pairs).
Map
Explanation: Map takes a set of data and converts it into another set of data, where individual elements are broken down into tuples (key/value pairs).
Reduce
Node
None of the Option is Correct
The MapReduce algorithm contains two important tasks, namely __________.
The MapReduce algorithm contains two important tasks, namely __________.
Map, Reduce
Explanation: The MapReduce algorithm contains two important tasks, namely Map and Reduce.
mapping, Reduction
mapped, reduce
Map, Reduction
Which of the following is not Features Of Hadoop?
Which of the following is not Features Of Hadoop?
Robust
Explanation: Robust is is not Features Of Hadoop.
Suitable for Big Data Analysis
Scalability
Fault Tolerance
How many types of data is present?
How many types of data is present?
3
Explanation: The data in it will be of three types:Structured data , Semi Structured data, Unstructured data.
2
4
5
Which of the following fields come under the umbrella of Big Data?
Which of the following fields come under the umbrella of Big Data?
All Options are Correct
Explanation: All options are the fields come under the umbrella of Big Data.
Black Box Data
Power Grid Data
Search Engine Data