Oracle - Application Security and PL/SQL MCQ

Oracle – Application Security and PL/SQL

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1. What is the primary purpose of encryption in application security?

To compress data

To protect data confidentiality

To ensure network connectivity

To optimize data retrieval

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2. In encryption, what does the key length refer to?

The length of the encrypted message

The length of the encryption algorithm

The length of the decryption process

The size of the encryption key

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3. Which of the following is an essential aspect of encryption algorithms?

Compression

Caching

Sorting

Padding

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4. In Oracle, which package provides encryption and decryption capabilities?

DBMS_ENCRYPT

DBMS_SECURITY

DBMS_CRYPTO

DBMS_CIPHER

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5. What does the DBMS_CRYPTO package allow you to do in Oracle?

Manage database users

Execute DML statements

Encrypt and decrypt data

Perform database queries

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6. When encrypting data using DBMS_CRYPTO, what is the primary purpose of padding and chaining?

Proper block alignment

Error handling

Data integrity

Compression

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7. Which package in Oracle is used for encrypting LOB (Large Object) data?

DBMS_SECURITY

DBMS_CRYPT

DBMS_LOB

DBMS_CRYPTO

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8. To decrypt data using DBMS_CRYPTO, what must you provide as input?

The encryption key

The encryption algorithm

The padding algorithm

The original data

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9. What does the process of key generation involve in encryption?

Obtaining a symmetric key

Decrypting data

Creating an encryption key

Encrypting data

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10. In encryption, what does key management primarily focus on?

Error handling

Securing encryption keys

Data compression

Encrypting data

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11. What is the purpose of cryptographic hashing in security?

Ensuring data integrity

Data compression

Encrypting data

Managing encryption keys

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12. Which method is used for ensuring data integrity and authenticity in security?

Message Authentication Codes (MACs)

Encryption

Key management

Data compression

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13. What is Transparent Data Encryption (TDE) used for in Oracle?

Data compression

Encrypting entire databases

Data retrieval optimization

Data integrity

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14. What does Transparent Tablespace Encryption in Oracle primarily protect?

Data compression

Tablespaces and data files

Individual rows of data

Database schemas

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15. What is the primary benefit of using Row-Level Security (RLS) in Oracle?

Improved data confidentiality

Simplified SQL queries

Data compression

Enhanced data retrieval speed

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16. In RLS, what is a common use case for dynamic policies?

Controlling database startup/shutdown

Restricting access to sensitive data

Data compression

Optimizing query performance

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17. How does Column-Sensitive RLS differ from regular RLS?

It doesn't support dynamic policies

It applies security policies at the table level

It enforces security policies at the column level

It only works with numeric data

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18. What is the purpose of RLS debugging in Oracle?

Identifying invalid policies

Troubleshooting security policies

Optimizing query performance

Testing database connections

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19. What are application contexts used for in Oracle security?

Data encryption

Query optimization

Storing session-specific data

Defining user roles

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20. How can you use application contexts to enforce security policies in RLS?

By optimizing query performance

By setting user roles

By defining context-sensitive policies

By limiting database access

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21. What is one way to identify nondatabase users in Oracle security?

By examining the audit trail

By using application contexts

By checking the user's login history

By analyzing session data

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22. What is Fine-Grained Auditing (FGprimarily used for in Oracle?

Securing PL/SQL code

Managing encryption keys

Optimizing SQL queries

Auditing specific data access

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23. What is a common use case for FGA in Oracle security?

Data compression

Monitoring data access to sensitive information

Managing encryption keys

Identifying invalid database objects

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24. In FGA, what does “Access How Many Columns?” refer to?

The number of tables in the database

The number of rows affected by an operation

The number of database sessions

The number of columns accessed in a query

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25. What does the process of checking the audit trail involve in Oracle security?

Monitoring PL/SQL code execution

Examining logs of data access

Analyzing SQL query performance

Reviewing database user roles

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Oracle – Application Security and PL/SQL MCQ