300-635 · Question #48
Which two Cisco UCS components require drivers? (Choose two )
The correct answer is A. FNIC. FNIC (Fibre Channel Network Interface Card) requires host OS drivers because it presents virtualized Fibre Channel HBA functionality to the operating system - without the appropriate driver, the OS cannot communicate with the storage fabric through UCS fabric interconnects…
Question
Options
- AFNIC
- BBIOS
- CCIMC
- DBoard controller
How the community answered
(24 responses)- A88% (21)
- B8% (2)
- C4% (1)
Explanation
FNIC (Fibre Channel Network Interface Card) requires host OS drivers because it presents virtualized Fibre Channel HBA functionality to the operating system - without the appropriate driver, the OS cannot communicate with the storage fabric through UCS fabric interconnects. Note that in real UCS environments, the companion adapter ENIC (Ethernet NIC) also requires drivers, making those the canonical "choose two" pair; ENIC's absence from this option list is a quirk of how the question is presented. BIOS is firmware that runs before the OS loads and initializes hardware at boot - it is managed via updates, not drivers. CIMC (Cisco Integrated Management Controller) is out-of-band management firmware embedded in the server (analogous to Dell iDRAC or HPE iLO) that operates independently of the host OS and requires no driver. Board controller is low-level firmware that manages power sequencing, LEDs, and chassis components - again, firmware-managed, not driver-dependent.
Memory tip: Think "NICs need drivers, firmware doesn't." FNIC and ENIC have "NIC" in the name - they present virtual devices to the OS, so the OS needs a driver to talk to them. BIOS, CIMC, and board controller are all firmware that operates below or beside the OS.
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