Explain Data Concepts DA0-001 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What does the .json file extension indicate about the file's contents?

   • AThe file contains a markup language with custom tags
   • BThe file contains a binary representation of a database
   • CThe file contains tabular data with rows and columns
   • DThe file contains structured data in a human-readable text format using key-value pairs
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2. 17foundation · easy

   Which of the following is a primary advantage of a network (graph) data structure?

   • AIt enforces strict data integrity through primary and foreign keys
   • BIt is the simplest structure to implement and understand
   • CIt excels at representing and querying complex, many-to-many relationships
   • DIt is the best choice for storing large volumes of unstructured text
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4. 18foundation · easy

   Which of the following is a typical use case for a CSV file?

   • AStoring configuration settings for a software application
   • BStoring a complex object graph with many-to-many relationships
   • CRepresenting a document with mixed content like paragraphs and images
   • DExchanging data between a spreadsheet application and a database system
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5. 19foundation · easy

   Which of the following is a key characteristic of a non-relational (NoSQL) database?

   • AIt always uses SQL as its primary query language
   • BIt stores data in a flexible format that can easily adapt to changing requirements
   • CIt enforces a rigid schema on all data before it is stored
   • DIt is primarily designed for complex queries involving multiple table joins
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6. 20application · medium

   A social media platform needs to model users and their 'follows' relationships. A user can follow many other users, and can be followed by many users. The analytics team wants to run queries like 'find all users who are followed by at least two users who also follow each other.' Which data structure is best suited for this analysis?

   • AA flat file with one line per follow relationship.
   • BA document database storing each user's list of followers as an array.
   • CA hierarchical structure with each user as a root and their followers as children.
   • DA graph database where users are nodes and 'follows' are edges.
   Reveal Solution Discussion Select an answer first