Database Administration: Master Database Management for University Students

Question 1

Which of the following is not a core duty of a database administrator?

Accepted Answer

Application development

Answer

Database backup and recovery

Answer

Database performance tuning

Answer

Database security management

Question 2

Which of the following is NOT a core duty of a database administrator?

Accepted Answer

Application development

Answer

Database backup and recovery

Answer

Database performance tuning

Question 3

Which of the following is not a primary responsibility of a database administrator (DBA)?

Accepted Answer

Software development

Answer

Database backup and recovery

Answer

Performance tuning

Answer

User management

Question 4

What is the main purpose of creating a database backup?

Accepted Answer

To restore the database in case of data loss or corruption

Answer

To create a copy of the database for archival purposes

Answer

To improve database performance

Answer

To prevent unauthorized access to the database

Question 5

Which of the following is not a common database recovery method?

Accepted Answer

Source control

Answer

Transaction logs

Answer

Full backups

Answer

Differential backups

Question 6

What is the primary goal of database performance tuning?

Accepted Answer

To increase the speed and efficiency of database operations

Answer

To reduce the size of the database

Answer

To enhance the security of the database

Answer

To simplify database management tasks

Question 7

What is the systematic process for optimizing database performance?

Accepted Answer

Identify bottlenecks, analyze data access patterns, and implement optimization techniques

Answer

Install faster hardware and increase database size

Answer

Monitor database activity and hope for improvements

Question 8

Which of the following is the primary task of a database administrator?

Accepted Answer

Backing up and recovering databases

Answer

Maintaining and optimizing database performance

Answer

Developing and implementing database applications

Answer

Training users on database systems

Question 9

What is the main goal of database performance tuning?

Accepted Answer

To improve the efficiency and responsiveness of database operations

Answer

To prevent unauthorized access to database resources

Answer

To ensure that data is stored securely in the database

Answer

To recover damaged or lost data from the database

Question 10

Which technique is used to ensure that data remains accessible even in the event of hardware or software failures?

Accepted Answer

Data replication

Answer

Data encryption

Answer

Data compression

Answer

Data validation

Question 11

What is the importance of maintaining data integrity in database management?

Accepted Answer

It ensures that data stored in the database is accurate, consistent, and reliable.

Answer

It protects data from unauthorized modification or deletion.

Answer

It improves the performance of database operations.

Answer

It simplifies the process of data recovery.

Question 12

Which method is commonly used to recover a database from a failure?

Accepted Answer

Restoring data from previously created backups

Answer

Repairing damaged database files

Answer

Reinstalling the database management system

Answer

Deleting and recreating the database

Question 13

What is the primary purpose of creating a data backup?

Accepted Answer

To protect the database from data loss or corruption

Answer

To improve the efficiency of database queries

Answer

To enforce data integrity constraints

Answer

To manage permissions for database users

Question 14

Which of the following is NOT an advantage of using a database management system (DBMS)?

Accepted Answer

Improved data redundancy

Answer

Centralized data management

Answer

Enhanced data security

Answer

Increased data consistency

Question 15

What is the key difference between a logical and a physical database model?

Accepted Answer

Logical models describe the conceptual structure of the database, while physical models describe its implementation on a specific platform.

Answer

Physical models describe the conceptual structure of the database, while logical models describe its implementation on a specific platform.

Answer

Logical models are used for database design, while physical models are used for data storage.

Answer

Physical models are used for database design, while logical models are used for data storage.

Question 16

What is the primary function of a transaction log in a database system?

Accepted Answer

To record changes made to the database during transactions

Answer

To recover the database to a previous state in case of a failure

Answer

To enforce data integrity constraints

Answer

To audit database operations for security purposes

Question 17

Which database backup method involves creating a copy of only the changed data since the last backup?

Accepted Answer

Incremental backup

Answer

Full backup

Answer

Differential backup

Answer

Point-in-time recovery

Question 18

Which performance tuning technique involves creating additional physical copies of the database on different servers?

Accepted Answer

Database partitioning

Answer

Index optimization

Answer

SQL statement tuning

Answer

Hardware upgrades

Question 19

What is the purpose of database auditing?

Accepted Answer

To track user activities and detect security breaches

Answer

To improve database performance

Answer

To backup and restore data

Answer

To optimize query execution plans

Question 20

What is the difference between a primary key and a foreign key?

Accepted Answer

A primary key uniquely identifies a row, while a foreign key references another row.

Answer

A foreign key uniquely identifies a row, while a primary key references another row.

Answer

Both primary keys and foreign keys uniquely identify rows.

Answer

Neither primary keys nor foreign keys uniquely identify rows.

Question 21

Which database normalization form ensures that all attributes are minimal and non-redundant?

Accepted Answer

Boyce-Codd normal form

Answer

First normal form

Answer

Second normal form

Answer

Third normal form

Question 22

Database backup, recovery, and performance tuning are all primary responsibilities of a database administrator. Which of the following is NOT among these tasks?

Accepted Answer

Database modeling

Answer

Data recovery

Answer

Performance tuning

Answer

Database backup

Question 23

Database recovery is crucial for maintaining data integrity and availability. What is its main objective?

Accepted Answer

Restoring corrupted or lost data

Answer

Preventing unauthorized database access

Answer

Backing up database content regularly

Answer

Improving database query response times

Question 24

To ensure high availability of databases, which technique is commonly employed?

Accepted Answer

RAID (Redundant Array of Independent Disks)

Answer

Data encryption

Answer

Data compression and archival

Answer

Query optimization techniques

Question 25

Data integrity is a fundamental concept in database management. What is its primary purpose?

Accepted Answer

Ensuring data accuracy and consistency

Answer

Boosting database performance

Answer

Protecting sensitive data from breaches

Answer

Minimizing data storage footprint

Question 26

Database normalization is a vital step in database design, offering several advantages. Which of the following is NOT a benefit of database normalization?

Accepted Answer

Increased storage efficiency

Answer

Reduced data redundancy

Answer

Enhanced data integrity

Answer

Improved database performance

Question 27

Database logs play a critical role in maintaining data integrity. What is their primary purpose?

Accepted Answer

Recording changes made to the database

Answer

Providing an alternative data backup

Answer

Enhancing database query performance

Answer

Encrypting sensitive data stored in the database

Question 28

Database performance tuning is crucial for optimizing database operations. Which tool is commonly used for this purpose?

Accepted Answer

Database profiler

Answer

Spreadsheet software

Answer

Data modeling tool

Answer

Version control software

Question 29

Database backups are essential for disaster recovery. What is their primary objective?

Accepted Answer

Creating a duplicate copy of the database for restoration

Answer

Improving database query response times

Answer

Preventing unauthorized database access

Answer

Reducing database storage requirements

Question 30

Various factors influence database performance. Which of the following does NOT have a direct impact on database performance?

Accepted Answer

Data storage location

Answer

Available hardware resources

Answer

Underlying database design

Answer

Number of concurrent database users

Question 31

Which of the following tools is NOT commonly used for database performance monitoring and analysis?

Accepted Answer

Salesforce Einstein Analytics

Answer

SolarWinds Database Performance Analyzer

Answer

Splunk

Answer

Grafana

Question 32

Which of the following is a critical responsibility of a database administrator?

Accepted Answer

Preserving the integrity and security of the database

Answer

Providing user training

Answer

Writing software applications

Question 33

What is the primary purpose of a database backup?

Accepted Answer

Creating a duplicate of the database for data restoration in case of a system failure

Answer

Enhancing database performance

Answer

Encrypting database data

Question 34

What is the purpose of a transaction log in a database?

Accepted Answer

Recording all modifications made to the database

Answer

Encrypting data for security

Answer

Providing real-time database backups

Answer

Storing frequently accessed data

Question 35

What is a key advantage of utilizing a graphical user interface (GUI) for database management?

Accepted Answer

User-friendliness and ease of use, particularly for non-technical users

Answer

Supports all major database systems

Answer

Provides more advanced features than command-line tools

Answer

Faster than using command-line tools

Question 36

What is the primary role of a database schema?

Accepted Answer

Defining the structure and relationships of data within a database

Answer

Storing data in the database

Answer

Managing user permissions

Question 37

Which practice is considered a best measure for ensuring database security?

Accepted Answer

Implementing strong passwords and encryption

Answer

Disabling the database's firewall

Answer

Granting access to all users without restriction

Answer

Leaving the database server accessible from the internet

Question 38

What is the main purpose of a database optimizer?

Accepted Answer

Improving the efficiency of SQL queries

Answer

Managing user accounts

Answer

Creating new database objects

Question 39

Which of the following is NOT a core responsibility of a database administrator?

Accepted Answer

Programming applications

Answer

Database backup

Answer

Database performance tuning

Answer

Database security management

Question 40

What is the primary purpose of enforcing data integrity constraints in a database?

Accepted Answer

Maintain data accuracy and consistency

Answer

Enhance database performance

Answer

Optimize storage space

Answer

Protect data from unauthorized access

Question 41

Which of the following database models is most suited for storing data that has a hierarchical structure?

Accepted Answer

Hierarchical database model

Answer

Relational database model

Answer

Network database model

Answer

Object-oriented database model

Question 42

What is the primary reason for creating a database backup?

Accepted Answer

To recover data in case of data loss or corruption

Answer

To improve database performance

Answer

To enforce data integrity

Answer

To optimize storage space

Question 43

What is the key difference between a primary key and a foreign key in a relational database?

Accepted Answer

A primary key uniquely identifies a row, while a foreign key references a primary key in another table.

Answer

A primary key can be null, while a foreign key cannot be null.

Answer

A primary key is defined for every column, while a foreign key is only defined for columns that reference other tables.

Question 44

Which of the following tools is commonly used for monitoring database performance?

Accepted Answer

Database management system (DBMS)

Answer

Operating system utility

Answer

Antivirus software

Answer

Network monitoring tool

Question 45

What is the primary goal of database normalization?

Accepted Answer

To eliminate data redundancy and inconsistencies

Answer

To simplify database structure

Answer

To enhance data security

Answer

To improve database performance

Question 46

Which of the following is a PRIMARY responsibility of a database administrator (DBA)?

Accepted Answer

Maintaining the integrity and performance of databases

Answer

Managing application programming interfaces (APIs)

Answer

Designing and implementing database systems

Question 47

What is the primary purpose of a database backup?

Accepted Answer

To preserve and protect data in case of system failure or data loss

Answer

To enhance the speed of data retrieval

Answer

To facilitate database migration

Question 48

Which of the following is a common technique used to ensure database availability?

Accepted Answer

Replication

Answer

Sharding

Answer

Normalization

Answer

Denormalization

Question 49

What is the purpose of performance tuning in database administration?

Accepted Answer

To optimize database performance for improved response times and resource utilization

Answer

To increase database storage capacity

Answer

To enhance data security

Question 50

What is the main difference between a stored procedure and a function in a database?

Accepted Answer

A stored procedure can modify data, while a function cannot

Answer

Stored procedures can accept parameters but functions cannot

Answer

Functions are more efficient than stored procedures

Question 51

Which of the following is a tool used for database monitoring and troubleshooting?

Accepted Answer

Query analyzer

Answer

Spreadsheet software

Answer

Version control system

Answer

Image editor

Question 52

What is a transaction in a database context?

Accepted Answer

A set of database operations that are treated as a single unit of work

Answer

A change made to the database schema

Answer

A user query that retrieves data from the database