CompTIA Cloud+ Practice Test

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Prepare for the CompTIA Cloud+ Test. Utilize flashcards and multiple choice questions, with hints and explanations for each question. Ensure your readiness for success in this certification exam.

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Host A and B can both access LUNs one to ten in a single SAN. LUN 11 has been created and Host A can access it but Host B cannot. What is the likely cause of this issue?

Faulty fiber HBA
Incorrect HBA WWPN
Incorrect HBA software version
Defective HBA

The correct answer is: Incorrect HBA WWPN

The situation described indicates that Host A is able to access LUN 11, while Host B cannot. The most plausible cause for this issue is an incorrect Host Bus Adapter (HBA) World Wide Port Name (WWPN). The WWPN is a unique identifier used in Fibre Channel networks that allows storage devices to recognize and communicate with hosts. If Host B’s HBA WWPN is incorrectly configured or does not match what has been assigned in the SAN for that specific LUN, then Host B will not be able to access LUN 11, even if it has access to the others. This restriction is often enforced by access control policies in the storage system, which utilize the WWPN to permit or deny access to LUNs. The alternatives present potential issues but do not fit the given scenario as neatly. While a faulty fiber HBA or a defective HBA might lead to connectivity issues, the fact that Host A can access LUN 11 suggests that the physical connection from Host A to the SAN is functioning. Similarly, having an incorrect HBA software version typically impacts overall functionality across all accessed LUNs rather than selectively blocking access to a single LUN. Thus, the incorrect HBA WWPN is the most accurate explanation for