Data C170 Pre-Assessment: Data Management - Foundations (Pfko)

2/13/23, 3:50 PM WGU Student Portal

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PRE-ASSESSMENT: DATA MANAGEMENT - FOUNDATIONS
(PFKO)
Attempt #1
Status: Not Passed

1. What is a broad definition of data?
YOUR CORRECT
ANSWER ANSWER


Numbers that are captured on digital media


Raw facts that are captured on printed or digital media


Alphanumeric combinations that can be captured on media that a
computer can read


Any information that can be transferred from print to digital


2. What are data?
YOUR CORRECT
ANSWER ANSWER


Facts that have been organized in a meaningful way


Facts that are the result of a query of a database system


Facts that are collected and stored in a database system


Facts that have been processed and used for decision making


3. What is a determining characteristic of unstructured data?
YOUR CORRECT
ANSWER ANSWER


It does not allow copying and pasting.


It is easy to query and retrieve by business applications.


It does not follow a data model.


It is stored in rows and columns.


4. Refer to this diagram.



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Which item represents unstructured data?
YOUR CORRECT
ANSWER ANSWER


A


B


C


D


5. Which is true about flat files?
YOUR CORRECT
ANSWER ANSWER


They contain no internal hierarchical organization.


They have a limit of 256 records.


They can only contain two-dimensional data.


They are always encrypted.


6. Which technology has no internal hierarchy?
YOUR CORRECT
ANSWER ANSWER


Flat files


Heap files


Hashed tables


Relational databases




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7. How were data retrieved before database management systems?
YOUR CORRECT
ANSWER ANSWER


Randomly from linked files


Sequentially from simple files


Using set operations on complex files


Using relationships between logical entities


8. What is the uniquely identifiable element about which data can be categorized in an entity-relationship
diagram?
YOUR CORRECT
ANSWER ANSWER


Entity types


Primary keys


Unary relationships


Intersection data points


9. Refer to this diagram.




Which classification is correct for the box marked “Quantity” in the given entity-relationship diagram?
YOUR CORRECT
ANSWER ANSWER


Quantity data


Modality data

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