SG0-001 · Question #274
Which portion of the 24-bit (aabbcc) fibre channel address identifies the domain ID?
The correct answer is A. aa. The 'aa' portion of a 24-bit Fibre Channel address (aabbcc) identifies the Domain ID.
Question
Which portion of the 24-bit (aabbcc) fibre channel address identifies the domain ID?
Options
- Aaa
- Bcc
- Caabb
- Dbbcc
How the community answered
(29 responses)- A93% (27)
- B3% (1)
- D3% (1)
Why each option
The 'aa' portion of a 24-bit Fibre Channel address (aabbcc) identifies the Domain ID.
The Fibre Channel 24-bit N-port ID is structured hierarchically as Domain ID, Area ID, and Port ID. The first 8 bits, represented by 'aa' in the (aabbcc) format, specifically identify the unique Domain ID of the Fibre Channel switch that the N-port is connected to within the SAN fabric.
The 'cc' portion of the Fibre Channel address represents the Port ID, not the Domain ID.
The 'aabb' portion of the Fibre Channel address represents the combined Domain ID and Area ID, not solely the Domain ID.
The 'bbcc' portion of the Fibre Channel address represents the combined Area ID and Port ID, not the Domain ID.
Concept tested: Fibre Channel N-port ID structure, Domain ID
Source: https://www.cisco.com/c/en/us/support/docs/storage-networking/mds-9000-series-multilayer-switches/63510-fc-address.html
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