190+ PostgreSQL MCQ With Online Practice Test

PostgreSQL, often referred to as Postgres, is a powerful open-source relational database management system (RDBMS) known for its scalability, robustness, and extensibility. It offers advanced features like ACID compliance, support for complex data types, and support for both SQL and NoSQL data. PostgreSQL is highly regarded for its performance, security, and reliability, making it a popular choice for applications ranging from small startups to large enterprises. Its active developer community continuously enhances and maintains the software. PostgreSQL is an excellent choice for data storage, analysis, and management in various domains, including web applications, data warehousing, and geospatial applications.

Practice Test

181. What is the purpose of the "pg_hba.conf" file in PostgreSQL security best practices?

Answer: To control client access and authentication methods

182. Which authentication method in PostgreSQL requires a client to provide a valid username and password for access?

Answer: Password authentication

183. What is the recommended approach for securing PostgreSQL connections when data transmission security is critical?

Answer: Enabling SSL/TLS encryption for client-server communication

184. What does "SQL injection" refer to in the context of PostgreSQL security best practices?

Answer: Unauthorized execution of malicious SQL code through unvalidated user input

185. Which PostgreSQL configuration parameter allows restricting the IP addresses from which the database server can accept connections?

Answer: "listen_addresses"

186. In PostgreSQL security best practices, what does "least privilege" mean?

Answer: Providing users with the minimum level of access necessary for their tasks

187. What is the purpose of "schema-level permissions" in PostgreSQL security?

Answer: To control access and privileges at the schema level

188. Which PostgreSQL extension is commonly used for encryption and decryption of data at rest?

Answer: "pgcrypto"

189. What does "security hardening" entail in PostgreSQL security best practices?

Answer: Implementing additional security measures and configurations to protect the database

190. Which PostgreSQL feature is used to encrypt data transmission between clients and the server using SSL/TLS?

Answer: SSL/TLS encryption
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