200-150 · Question #131
Which two options are block-based storage protocols? (Choose two.)
The correct answer is B. iSCSI D. FCoE. Block-based storage protocols operate at the raw block level and transport SCSI or Fibre Channel commands over a network, while NFS and CIFS are file-level protocols.
Question
Which two options are block-based storage protocols? (Choose two.)
Options
- ANFS
- BiSCSI
- CNAS
- DFCoE
- ECIFS
How the community answered
(37 responses)- A3% (1)
- B89% (33)
- C5% (2)
- E3% (1)
Why each option
Block-based storage protocols operate at the raw block level and transport SCSI or Fibre Channel commands over a network, while NFS and CIFS are file-level protocols.
NFS (Network File System) is a file-level protocol that presents a shared file system to clients, not raw block storage.
iSCSI (Internet Small Computer Systems Interface) encapsulates SCSI block-level commands inside TCP/IP packets, providing block storage access over standard Ethernet networks.
NAS (Network Attached Storage) is a storage architecture or device category, not a protocol, and it typically uses file-level protocols such as NFS or CIFS.
FCoE (Fibre Channel over Ethernet) encapsulates Fibre Channel frames over an Ethernet network, delivering block-level storage transport without requiring a dedicated FC fabric.
CIFS (Common Internet File System) is a file-level protocol used for Windows file sharing and operates above the block level.
Concept tested: Block-level vs file-level storage protocols
Source: https://www.cisco.com/c/en/us/products/storage-networking/index.html
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