Block storage can easily be shared by several different Web apps, virtual machines, or containers.

Question

BlackTom AI · Accepted Answer

Statement under review: 'Block storage can easily be shared by several different Web apps, virtual machines, or containers.'

Option 1 (True): This would imply that block storage is readily shareable across multiple independent compute environments. While some specialized configurations (e.g., shared block storage with multi-attach capabilities, clustering filesystems, or storage-area networks) can permit concurrent access, this is not the norm for standard block storage. In typical setups, block storage is designed to be attached to a single host at a time, and sharing across multiple apps or VMs introduces complexity, data consistency concerns, and potential data corruption if not managed carefully.

Option 2 (False): In the usual and most common cloud and on-premises deployments, block storage is attached to a single compute entity (a single VM, container, or host) at a time. Sharing requires additional mechanisms such as multi-node access patterns, distributed or clustered filesystems, or networked storage abstractions that provide shared access semantics. The phrase 'easily be shared' overstates the practicality and commonality of these arrangements, since they require specialized configurations and are not part of standard block storage behavior.

Why the incorrect interpretations are problematic:
- If you choose True, you’re assuming universal, straightforward sharing without acknowledging the need for specialized features or risk of data integrity issues.
- If you choose False (the accurate stance), you recognize that block storage is typically bound to a single consumer, and sharing across multiple apps/VMs requires additional layers and careful coordination rather than being an inherent, simple capability.

In summary, the common, straightforward use of block storage is not to be shared easily among multiple distinct compute entities; it typically attaches to one at a time unless specific multi-access configurations are implemented. This makes the statement misleading in general practice.

CET-1019-001 - 50973 - 202505 Final Exam

Block storage can easily be shared by several different Web apps, virtual machines, or containers.

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