CompTIA Cloud+ Practice Test

What does LUN masking accomplish in a storage environment?

1. Improves performance

2. Enhances security

3. Reduces costs

4. Prevents data duplication

The correct answer is: Enhances security

LUN masking is primarily used to enhance security in a storage environment. It works by restricting access to Logical Unit Numbers (LUNs) so that only authorized hosts or servers can interact with specific LUNs. This selective access control ensures that sensitive data is protected from unauthorized access, which is crucial in environments where multiple users or systems share storage resources. With LUN masking, when a storage area network (SAN) is configured, administrators can define which specific servers have visibility and access to particular LUNs. This means that even if multiple systems are connected to the same SAN, not every system can see or interact with all of the available storage resources. By limiting access, LUN masking plays a vital role in safeguarding data and maintaining privacy and compliance with regulatory standards. The other options, while relevant in different contexts, do not accurately reflect the primary purpose of LUN masking. Performance improvements can be associated with other storage optimizations, cost reduction typically involves different strategies like efficient resource allocation, and preventing data duplication is managed through different techniques such as deduplication or data management policies, rather than through LUN masking.