Which security standard is commonly used for protecting data in transit between a client and a database server?

  • AES
  • MD5
  • SHA-256
  • TLS/SSL
Transport Layer Security (TLS) or Secure Sockets Layer (SSL) is commonly used for encrypting data transmitted between a client and a database server. This ensures that the data remains confidential and protected from unauthorized access during transit. TLS/SSL protocols provide encryption and authentication mechanisms, making them essential for securing communication channels in database systems.

Scenario: During performance testing, you notice that the response time for certain database queries is unacceptably high. What steps should you take to address this performance issue?

  • Increase Server RAM
  • Optimize Database Indexes
  • Upgrade Network Bandwidth
  • Use a Faster Database Engine
When encountering unacceptably high response times for certain database queries, optimizing database indexes is often a practical solution. Database indexes help speed up query execution by providing quick access to specific rows in a table. By analyzing and optimizing the database indexes, you can improve the efficiency of query execution and reduce response times. This approach targets the root cause of the performance issue related to query processing within the database.

Scenario: During authentication testing, you notice that the application does not enforce strong password policies, allowing users to set weak passwords. How can this vulnerability impact security, and what should you recommend?

  • Enforcing multi-factor authentication
  • Implementing role-based access control
  • Implementing strong password policies
  • Increasing session timeout duration
Weak password policies can lead to various security risks such as unauthorized access, data breaches, and account compromise. To address this vulnerability, it is recommended to implement strong password policies, including requirements for minimum length, complexity, and regular password updates. Additionally, enforcing password strength validation during user registration and password reset processes can enhance security.

Scenario: In your ETL testing project, you encounter a situation where the data extracted from the source systems does not match the expected data in the target system. What steps should you take to identify the root cause of this discrepancy?

  • Check data dependencies
  • Compare data at each ETL stage
  • Perform data profiling
  • Review ETL mappings
Comparing data at each ETL stage involves comparing the data extracted from source systems with the data at various stages of transformation and loading in the ETL process. This helps identify discrepancies and pinpoint where data integrity issues may have occurred. By systematically analyzing the data flow and transformations at each stage, testers can identify the root cause of the discrepancy and take appropriate corrective actions to ensure data consistency between source and target systems.

Which of the following is a common solution for handling large data sets efficiently?

  • Denormalization
  • Indexing
  • Normalization
  • Partitioning
Denormalization is a common solution for handling large data sets efficiently. It involves intentionally introducing redundancy into a database design to improve read performance by reducing the need for joins and queries across multiple tables, at the expense of increased storage requirements and potential update anomalies.

Which type of access control restricts users based on their roles and privileges within a database?

  • Attribute-based access control
  • Discretionary access control
  • Mandatory access control
  • Role-based access control
Role-based access control (RBAC) restricts users' access to data and resources based on their assigned roles and privileges within the database system. This ensures that users can only perform actions that are appropriate to their role, enhancing security and data integrity.

Scenario: An organization's database contains highly confidential employee data. Access control testing reveals that unauthorized employees can view this data. What access control measure should be implemented to address this issue?

  • Enforce Principle of Least Privilege
  • Implement Access Control Lists (ACLs)
  • Implement Intrusion Detection Systems (IDS)
  • Use Encryption for Data-at-Rest
The correct access control measure to address this issue is to enforce the Principle of Least Privilege (PoLP). PoLP ensures that each user, system, or process has the minimum level of access necessary to perform their tasks. By enforcing PoLP, unauthorized employees would not have access to highly confidential employee data unless explicitly granted permission. Implementing Access Control Lists (ACLs) might help restrict access but may not enforce the principle of least privilege as effectively. Using encryption for data-at-rest and implementing intrusion detection systems are important security measures but may not directly address the access control issue.

Proper documentation and ____________ are essential for maintaining transparency in the testing process.

  • Communication
  • Reporting
  • Validation
  • Verification
Reporting ensures that all stakeholders have clear visibility into the testing process and its outcomes, promoting transparency and accountability.

Which aspect of database testing is typically automated as part of the CI process?

  • Manual data validation
  • Performance tuning
  • Regression testing
  • User acceptance testing
Regression testing, which involves retesting existing functionalities to ensure that new changes haven't introduced unintended consequences, is typically automated as part of the CI process. This automation helps maintain the integrity of the database and the overall system by quickly identifying potential issues.

When performing data migration testing, what is the significance of data transformation?

  • It checks for network latency during migration
  • It ensures that data is converted accurately from one format to another
  • It monitors the server's memory usage
  • It verifies the speed of data migration process
Data transformation plays a crucial role in data migration testing as it ensures that data is converted accurately from its source format to the target format. This involves mapping data fields, applying business rules, and transforming data as required by the target system. Ensuring the accuracy of data transformation helps in maintaining data integrity and consistency after migration.