HP0-J73 · Question #134
Refer to the exhibit. A company has a Fibre Channel-based SAN in their data center based on 2 GB SAN switches. The switches are connected as shown in the exhibit. Which SAN topology is described by th
The correct answer is D. Cascade. A cascade topology connects Fibre Channel switches in a sequential daisy-chain, where each switch links directly to the next rather than to a central hub switch.
Question
Refer to the exhibit. A company has a Fibre Channel-based SAN in their data center based on 2 GB SAN switches. The switches are connected as shown in the exhibit. Which SAN topology is described by this configuration?
Exhibit
Options
- ACore-edge
- BRing
- CMesh
- DCascade
How the community answered
(27 responses)- B4% (1)
- D96% (26)
Why each option
A cascade topology connects Fibre Channel switches in a sequential daisy-chain, where each switch links directly to the next rather than to a central hub switch.
Core-edge topology requires a dedicated high-port-count core switch that edge switches connect to in a hub-and-spoke arrangement, not a simple peer-to-peer switch link.
A ring topology forms a closed loop where the last switch in the chain connects back to the first switch.
A mesh topology requires direct links between every switch in the fabric, providing full interconnect redundancy.
In a cascade (also called daisy-chain) topology, switches are connected end-to-end in a linear series, which matches the described two-switch configuration connected as shown. This design is simple and inexpensive but increases inter-switch hop count and limits scalability as the fabric grows.
Concept tested: Fibre Channel SAN cascade switch topology
Source: https://www.cisco.com/c/en/us/products/collateral/storage-networking/mds-9000-series-multilayer-switches/white-paper-c11-729280.html
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