Your answer is partially correct. You have correctly selected 1.
The correct answer is: Calculating the average salary on a database of payroll data. – Suitable, Sorting a 10terabyte list into alphabetical order. – Suitable, Finding the median age of respondents in a census. – Unsuitable Question 2
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The optional Combiner class follows the same model as the Select one: a. Reducer class b. TaskTracker c. Job Driver class d. Mapper class Feedback
Your answer is correct. The correct answer is: Reducer class Question 3
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Input and output data formats for a MapReduce job are specified in the Select one: a. Reducer class b. Combiner class c. Mapper Class d. Driver class Feedback
Your answer is correct. The correct answer is: Driver class Question 4
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Which of the following are valid input formats for MapReduce jobs? (Check all that apply) Select one or more: a. Live Video Streams b. Distributed Indexes
c. RDBMS Tables d. Text Files e. NoSQL Databases Feedback
Your answer is correct. The correct answer is: Text Files, NoSQL Databases, Distributed Indexes, RDBMS Tables Question 5
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There are always the same number of Map and Reduce tasks, which is determined by the number of data splits. Select one: True False Feedback
Your answer is correct. The correct answer is 'False'. -----------------------------------------------------------------------------------------------------------------Question text
Match the following use cases to the appropriate type of data store.
Storage and analysis of people, friends, and relatives. Relational structured data used in online transaction processing. Fast import and aggregation of weather sensor data. Storage of user comments for a web forum. Feedback
Your answer is partially correct.
Answer 1Choose...Graph DatabaseKey-Value StoreColumnar StoreRDBMSDocument Store Answer 2Choose...Graph DatabaseKey-Value StoreColumnar StoreRDBMSDocument Store Answer 3Choose...Graph DatabaseKey-Value StoreColumnar StoreRDBMSDocument Store Answer 4Choose...Graph DatabaseKey-Value StoreColumnar StoreRDBMSDocument Store
You have correctly selected 3. The correct answer is: Storage and analysis of people, friends, and relatives. – Graph Database, Relational structured data used in online transaction processing. – RDBMS, Fast import and aggregation of weather sensor data. – Columnar Store, Storage of user comments for a web forum. – Document Store Question 2
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Identify which of the following are strengths of the NoSQL paradigm (choose all that apply): Select one or more: a. Integrity b. Fault tolerance c. Flexibility d. Scalability e. Atomicity Feedback
Your answer is correct. The correct answer is: Scalability, Fault tolerance, Flexibility Question 3
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Most NoSQL data stores require formal schema definitions and provide strong data typing. Select one: True False Feedback
The correct answer is 'False'.
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Identify the portion of the HBase cell shown in bold: 09774305 data:name 00056348312 student1 Select one: a. Timestamp b. Row key
c. Column qualifier d. Value e. Column family Feedback
Your answer is correct. The correct answer is: Column qualifier Question 2
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Identify the portion of the HBase cell shown in bold:
09774305 data:name 00056348312 student1 Select one: a. Timestamp b. Row key c. Column qualifier d. Value e. Column family Feedback
Your answer is correct. The correct answer is: Row key Question 3
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Which of the following are valid methods to access HBase? (Select all that apply) Select one or more: a. Pony Express b. Command Line Interface c. Thrift Client d. MapReduce Input Format e. Java API Feedback
Your answer is partially correct. You have correctly selected 3. The correct answer is: Command Line Interface, Java API, Thrift Client, MapReduce Input Format Question 4
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Values with the same _________________ are stored in the same physical file. Select one: a. Column qualifier b. Row key c. Value d. Column Family e. Timestamp Feedback
Your answer is correct. The correct answer is: Column Family Question 5
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Timestamps and incrementing numbers make the best row keys. Select one: True False Feedback
The correct answer is 'False'.
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Match the following tools to where they originated:
