200-150 · Question #232
An engineer has been tasked with implementing block based storage in the data center. Which protocol must the engineer use?
The correct answer is D. FCoE. Block-based storage presents raw storage volumes to hosts, and FCoE is the protocol in the list that delivers block-level SAN access; the remaining options are file-level protocols or an architecture term.
Question
An engineer has been tasked with implementing block based storage in the data center. Which protocol must the engineer use?
Options
- ACIFS
- BNAS
- CNFS
- DFCoE
How the community answered
(22 responses)- A5% (1)
- B5% (1)
- D91% (20)
Why each option
Block-based storage presents raw storage volumes to hosts, and FCoE is the protocol in the list that delivers block-level SAN access; the remaining options are file-level protocols or an architecture term.
CIFS (Common Internet File System) is a file-sharing protocol that exposes shared folders at the file level over a network, not raw block devices.
NAS (Network Attached Storage) is a storage architecture that provides file-level access, not a block-storage protocol.
NFS (Network File System) is a file-level protocol that mounts remote directories as file system objects, not raw block devices.
FCoE (Fibre Channel over Ethernet) encapsulates native Fibre Channel frames inside Ethernet frames using the FCoE Initialization Protocol, giving hosts direct block-level access to LUNs over a lossless Data Center Bridging (DCB) Ethernet fabric - making it a true block storage protocol.
Concept tested: Block storage protocol identification - FCoE vs file protocols
Source: https://www.cisco.com/c/en/us/products/collateral/storage-networking/nexus-5000-series-switches/white_paper_c11-623731.html
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