Big Data Fundamentals

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Questions and Answers

What is the primary reason big data requires new techniques, algorithms, and analytics?

  • Due to the diversity and complexity of the data (correct)
  • Due to the lack of storage capacities
  • Due to the large size of the data
  • Due to the unstructured nature of the data

What is the main reason behind the importance of big data?

  • What an organization does with the data (correct)
  • The cost of storing the data
  • The speed at which data is generated
  • The amount of data an organization has

What is the estimated amount of data that exists in the digital universe today?

  • 5 Zetabytes
  • 2.7 Zetabytes (correct)
  • 10 Zetabytes
  • 1 Zetabyte

What is the approximate amount of user-generated data stored, accessed, and analyzed by Facebook?

<p>30+ Petabytes (A)</p> Signup and view all the answers

What is the estimated amount of data generated daily by Twitter?

<p>7 Terabytes (A)</p> Signup and view all the answers

What percentage of today's stored data was generated in the last two years?

<p>90% (A)</p> Signup and view all the answers

Which of the following is a characteristic of big data?

<p>All of the above (D)</p> Signup and view all the answers

What is the main idea behind 'Viability' in big data characteristics?

<p>Selecting attributes that are likely to predict outcomes (C)</p> Signup and view all the answers

What is the main idea behind 'Value' in big data characteristics?

<p>Analyzing data to find business value (D)</p> Signup and view all the answers

What is the primary driver of the increase in availability of data sources?

<p>Proliferation of mobile phones (A)</p> Signup and view all the answers

What is the key benefit of big data?

<p>The ability to generate insights that drive business value (D)</p> Signup and view all the answers

What is the characteristic of big data that refers to carefully selecting attributes that predict outcomes?

<p>Viability (C)</p> Signup and view all the answers

What is the main challenge of managing big data?

<p>Analyzing diverse and complex data (B)</p> Signup and view all the answers

What is the primary reason behind the need to analyze real-time data?

<p>To gain a competitive advantage (B)</p> Signup and view all the answers

What is the common theme among the sources of big data?

<p>They are all from different data types (C)</p> Signup and view all the answers

What is the implication of having 90% of today's stored data generated in the last two years?

<p>Data is being generated at an exponential rate (D)</p> Signup and view all the answers

What is the key difference between big data and traditional data?

<p>Big data requires new techniques and algorithms (C)</p> Signup and view all the answers

What is the main benefit of Walmart's ability to handle over 1 million customer transactions per hour?

<p>Competitive advantage through data analysis (C)</p> Signup and view all the answers

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