Database Security and Authorization MCQs in DBMS

By: Prof. Dr. Fazal Rehman Shamil | Last updated: September 23, 2024

1. Which of the following is a primary goal of database security?
   a) Increase transaction speed
   b) Ensure data consistency
   c) Protect data from unauthorized access and breaches
   d) Optimize query performanceAnswer: c) Protect data from unauthorized access and breaches
2. What is the purpose of authentication in database security?
   a) To verify the identity of users accessing the database
   b) To encrypt data stored in the database
   c) To ensure data integrity during transmission
   d) To manage user roles and permissionsAnswer: a) To verify the identity of users accessing the database
3. Which type of access control involves assigning permissions based on roles rather than individual users?
   a) Discretionary Access Control (DAC)
   b) Mandatory Access Control (MAC)
   c) Role-Based Access Control (RBAC)
   d) Attribute-Based Access Control (ABAC)Answer: c) Role-Based Access Control (RBAC)
4. What is the main function of a database management system (DBMS) in terms of data security?
   a) To manage data storage efficiently
   b) To ensure the availability of data
   c) To enforce access control and manage user permissions
   d) To optimize data retrieval speedAnswer: c) To enforce access control and manage user permissions
5. Which of the following is NOT typically considered a database security measure?
   a) Encryption
   b) Access control lists
   c) Backup and recovery
   d) Query optimizationAnswer: d) Query optimization
6. In the context of database security, what is a “privilege”?
   a) The right to perform specific operations on the database
   b) The ability to access the database from multiple devices
   c) The permission to modify database schema
   d) The capacity to store large volumes of dataAnswer: a) The right to perform specific operations on the database
7. Which access control model enforces restrictions based on predefined security labels and classification levels?
   a) Discretionary Access Control (DAC)
   b) Mandatory Access Control (MAC)
   c) Role-Based Access Control (RBAC)
   d) Attribute-Based Access Control (ABAC)Answer: b) Mandatory Access Control (MAC)
8. What is the principle of least privilege in database security?
   a) Users should have the maximum level of access required to perform their job functions
   b) Users should be given minimal access rights necessary to perform their tasks
   c) Users should be granted access to all available data for flexibility
   d) Access rights should be granted based on user role rather than necessityAnswer: b) Users should be given minimal access rights necessary to perform their tasks
9. What is the role of auditing in database security?
   a) To provide real-time monitoring of database performance
   b) To track and record database access and modifications for security purposes
   c) To encrypt data during storage
   d) To manage user roles and permissionsAnswer: b) To track and record database access and modifications for security purposes
10. Which of the following techniques helps to protect data from unauthorized access during transmission?
    a) Data encryption
    b) Backup and recovery
    c) Role-based access control
    d) Data normalizationAnswer: a) Data encryption
11. In a database context, what does “data masking” refer to?
    a) Hiding data to prevent unauthorized users from accessing sensitive information
    b) Encrypting data to ensure its confidentiality
    c) Backing up data to prevent loss
    d) Modifying data to improve performanceAnswer: a) Hiding data to prevent unauthorized users from accessing sensitive information
12. Which method of database access control allows users to specify which resources they want to share and with whom?
    a) Mandatory Access Control (MAC)
    b) Discretionary Access Control (DAC)
    c) Role-Based Access Control (RBAC)
    d) Attribute-Based Access Control (ABAC)Answer: b) Discretionary Access Control (DAC)
13. What is a “firewall” in the context of database security?
    a) A software tool that prevents unauthorized access to or from a private network
    b) A hardware device used to improve database performance
    c) A method for encrypting data during storage
    d) A protocol for managing database backupsAnswer: a) A software tool that prevents unauthorized access to or from a private network
14. What does “data integrity” ensure in a database system?
    a) That data is stored efficiently
    b) That data is accurate, consistent, and reliable
    c) That data can be retrieved quickly
    d) That data is accessible to all usersAnswer: b) That data is accurate, consistent, and reliable
15. Which database security practice involves regularly reviewing and updating user access permissions?
    a) Security patch management
    b) Privilege auditing
    c) Data encryption
    d) Backup and recoveryAnswer: b) Privilege auditing

 

More MCQs Of Database Systems

1. Database Models MCQs in DBMS
   1. Hierarchical model MCQs in DBMS
   2. Network model MCQs in DBMS
   3. Relational model MCQs in DBMS
   4. Object-oriented model MCQs in DBMS
   5. NoSQL databases MCQs in DBMS
2. Relational Database Model MCQs in DBMS
   1. tables, attributes, tuples, and relations MCQs in DBMS
   2. Primary keys and foreign keys MCQs in DBMS
   3. Integrity constraints MCQs in DBMS
3. SQL (Structured Query Language) MCQs in DBMS
   1. Data Definition Language (DDL) MCQs in DBMS
   2. Data Manipulation Language (DML) MCQs in DBMS
   3. Data Control Language (DCL) MCQs in DBMS
   4. Transaction Control Language (TCL) MCQs in DBMS
   5. Advanced SQL queries and functions MCQs in DBMS
4. Database Design MCQs in DBMS
   1. Entity-Relationship (ER) modeling MCQs in DBMS
   2. Extended ER modeling MCQs in DBMS
   3. Normalization and normal forms (1NF, 2NF, 3NF, BCNF) MCQs in DBMS
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5. Database Management System Architecture MCQs in DBMS
   1. Three-schema architecture (external, conceptual, internal) MCQs in DBMS
   2. Data independence MCQs in DBMS
   3. DBMS components and functions MCQs in DBMS
6. Storage and File Structure MCQs in DBMS
   1. Data storage on physical media MCQs in DBMS
   2. File organization and access methods MCQs
   3. Indexing (B-trees, hash indexing) MCQs in DBMS
   4. RAID technology MCQs in DBMS
7. Query Processing and Optimization MCQs in DBMS
8. Database Transaction Management MCQs in DBMS
   1. ACID properties (Atomicity, Consistency, Isolation, Durability) MCQs in DBMS
   2. Transaction states and lifecycle MCQs in DBMS
   3. Concurrency control techniques (locking, timestamping, multiversion) MCQs in DBMS
   4. Deadlock detection and resolution MCQs in DBMS
9. Database Security and Authorization MCQs in DBMS
   1. Authentication and authorization mechanisms MCQs in DBMS
   2. Data encryption techniques MCQs in DBMS
   3. Role-based access control MCQs in DBMS
   4. SQL injection prevention MCQs in DBMS
10. Backup and Recovery MCQs in DBMS
    1. Backup types and strategies MCQs in DBMS
    2. Recovery techniques (log-based, shadow paging) MCQs in DBMS
    3. Disaster recovery planning MCQs in DBMS
11. Distributed Databases MCQs in DBMS
    1. Distributed database architecture MCQs MCQs in DBMS
    2. Data fragmentation, replication, and allocation in DBMS
    3. Distributed query processing MCQs in DBMS
    4. Consistency models and protocols MCQs in DBMS

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