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CompTIA

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.

Storage Connectivity

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)
  • A
    3% (1)
  • B
    8% (3)
  • C
    3% (1)
  • D
    87% (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.

AThe host will be visible to the switch but not see any defined volumes

If the host were visible, it would imply a functional physical link, which is contrary to a broken fiber optic cable.

BThe host bus adapter will fail

A cable fault primarily affects connectivity, not typically causing a direct hardware failure of the Host Bus Adapter itself.

CThe switch SFP will fail

A broken cable does not typically cause a hardware failure of the switch's SFP module; it merely prevents data transmission through it.

DThe host will not be visible to the switchCorrect

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

Topics

#Fibre Channel#cable damage#connectivity issues

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