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CDW110 EXAM/CDW110 EXAM PREPARATION/CDW110
PRACTICE EXAM ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS|AGRADE
Question 1
What is the primary purpose of data warehousing?
A. Store and analyze large amounts of business data
B. Replace operating systems
C. Eliminate cybersecurity risks
D. Design computer hardware
Answer: A
Rationale: Data warehouses centralize data for reporting and analytics.
Question 2
Which process involves extracting, transforming, and loading data into a
warehouse?
A. ETL
B. SQL
C. TCP/IP
D. FTP
Answer: A
Rationale: ETL prepares and transfers data into a warehouse.
Question 3
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What does SQL stand for?
A. Structured Query Language
B. System Query Logic
C. Secure Queue Link
D. Standard Quality Layer
Answer: A
Rationale: SQL is used to manage and query databases.
Question 4
Which database model organizes data into tables with rows and columns?
A. Relational database
B. Hierarchical database
C. Network database
D. Object-only database
Answer: A
Rationale: Relational databases use tables to store related data.
Question 5
What is the primary key in a database table?
A. A unique identifier for each record
B. A duplicate data field
C. A password for the database
D. A backup storage system
Answer: A
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Rationale: Primary keys uniquely identify records.
Question 6
Which SQL command retrieves data from a table?
A. SELECT
B. DELETE
C. UPDATE
D. DROP
Answer: A
Rationale: SELECT queries data from databases.
Question 7
What is a data mart?
A. A smaller subset of a data warehouse
B. A computer virus
C. A network cable
D. A spreadsheet application
Answer: A
Rationale: Data marts focus on specific business areas.
Question 8
Which term describes raw facts and figures without context?
A. Data
B. Information
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C. Knowledge
D. Intelligence
Answer: A
Rationale: Data becomes information after processing.
Question 9
What is normalization in databases?
A. Organizing data to reduce redundancy
B. Increasing duplicate records
C. Encrypting files
D. Backing up data
Answer: A
Rationale: Normalization improves database efficiency.
Question 10
Which SQL statement adds new records to a table?
A. INSERT
B. SELECT
C. DELETE
D. JOIN
Answer: A
Rationale: INSERT adds rows to a database table.
Question 11
pg. 4
CDW110 EXAM/CDW110 EXAM PREPARATION/CDW110
PRACTICE EXAM ACTUAL EXAM 200 QUESTIONS AND
CORRECT DETAILED ANSWERS|AGRADE
Question 1
What is the primary purpose of data warehousing?
A. Store and analyze large amounts of business data
B. Replace operating systems
C. Eliminate cybersecurity risks
D. Design computer hardware
Answer: A
Rationale: Data warehouses centralize data for reporting and analytics.
Question 2
Which process involves extracting, transforming, and loading data into a
warehouse?
A. ETL
B. SQL
C. TCP/IP
D. FTP
Answer: A
Rationale: ETL prepares and transfers data into a warehouse.
Question 3
pg. 1
,2|Page
What does SQL stand for?
A. Structured Query Language
B. System Query Logic
C. Secure Queue Link
D. Standard Quality Layer
Answer: A
Rationale: SQL is used to manage and query databases.
Question 4
Which database model organizes data into tables with rows and columns?
A. Relational database
B. Hierarchical database
C. Network database
D. Object-only database
Answer: A
Rationale: Relational databases use tables to store related data.
Question 5
What is the primary key in a database table?
A. A unique identifier for each record
B. A duplicate data field
C. A password for the database
D. A backup storage system
Answer: A
pg. 2
,3|Page
Rationale: Primary keys uniquely identify records.
Question 6
Which SQL command retrieves data from a table?
A. SELECT
B. DELETE
C. UPDATE
D. DROP
Answer: A
Rationale: SELECT queries data from databases.
Question 7
What is a data mart?
A. A smaller subset of a data warehouse
B. A computer virus
C. A network cable
D. A spreadsheet application
Answer: A
Rationale: Data marts focus on specific business areas.
Question 8
Which term describes raw facts and figures without context?
A. Data
B. Information
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, 4|Page
C. Knowledge
D. Intelligence
Answer: A
Rationale: Data becomes information after processing.
Question 9
What is normalization in databases?
A. Organizing data to reduce redundancy
B. Increasing duplicate records
C. Encrypting files
D. Backing up data
Answer: A
Rationale: Normalization improves database efficiency.
Question 10
Which SQL statement adds new records to a table?
A. INSERT
B. SELECT
C. DELETE
D. JOIN
Answer: A
Rationale: INSERT adds rows to a database table.
Question 11
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