SG0-001 · Question #61
A technician, in a machine room, accidentally drops a floor tile on a fiber optic cable running from a single path host to a Fibre Channel switch. Which of the following symptoms would be MOST likely
The correct answer is D. The host will not be visible to the switch. A damaged fiber optic cable from a host to a Fibre Channel switch will prevent any communication, making the host undetectable by the switch.
Question
A technician, in a machine room, accidentally drops a floor tile on a fiber optic cable running from a single path host to a Fibre Channel switch. Which of the following symptoms would be MOST likely to occur if the cable is not replaced?
Options
- AThe host will be visible to the switch but not see any defined volumes
- BThe host bus adapter will fail
- CThe switch SFP will fail
- DThe host will not be visible to the switch
How the community answered
(38 responses)- A3% (1)
- B8% (3)
- C3% (1)
- D87% (33)
Why each option
A damaged fiber optic cable from a host to a Fibre Channel switch will prevent any communication, making the host undetectable by the switch.
If the host were visible, it would imply a functional physical link, which is contrary to a broken fiber optic cable.
A cable fault primarily affects connectivity, not typically causing a direct hardware failure of the Host Bus Adapter itself.
A broken cable does not typically cause a hardware failure of the switch's SFP module; it merely prevents data transmission through it.
A broken fiber optic cable disrupts the physical layer connection, preventing the transmission of light signals required for Fibre Channel communication. Without a working physical link, the host cannot establish an operational connection with the Fibre Channel switch and therefore will not appear visible or registered to the switch.
Concept tested: Fibre Channel physical connectivity troubleshooting
Source: https://www.cisco.com/c/en/us/td/docs/switches/datacenter/mds9000/system/message/messages_2_ed/fc_msg.html
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