711.4 Hardware Configuration (weight: 2) BSD-SPECIALIST Practice Questions (Page 2)

Questions 6–10

1. 6application · medium

   A FreeBSD server has a SCSI tape drive attached via a SAS controller. The administrator needs to verify the tape drive is visible to the system and identify its device node. Which command should be used?

   • A`kldstat`
   • B`atacontrol list`
   • C`pciconf -l`
   • D`camcontrol devlist`
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   Which command displays a list of currently loaded kernel modules on FreeBSD?

   • Akldunload
   • Bkldstat
   • Ckldload
   • Dlsmod
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4. 8application · medium

   A FreeBSD administrator is troubleshooting a new server that fails to detect its onboard Intel NIC during boot. The NIC is not listed in the output of `ifconfig -a`. Which command sequence would provide the most direct evidence about whether the NIC was probed at boot and whether its driver module is currently loaded?

   • ARun `pciconf -l` to list all PCI devices, then run `sysctl hw.intel` to check driver status.
   • BRun `camcontrol devlist` to list all devices, then run `kldload if_em` to load the driver.
   • CRun `dmesg | grep -i intel` to check boot-time probe messages, then run `kldstat` to see if the NIC driver is loaded.
   • DRun `atacontrol list` to check ATA channels, then run `dmesg | grep em` to see if the driver attached.
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5. 9application · easy

   A FreeBSD administrator loaded a kernel module for a new network card, but the module is not working as expected. The administrator wants to verify the module is actually loaded and check its dependencies. Which command shows loaded modules and their dependencies?

   • A`kldunload -v`
   • B`kldload -v`
   • C`sysctl kern.module.list`
   • D`kldstat -v`
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6. 10expert · hard

   A company runs a mixed environment with FreeBSD and NetBSD servers. A kernel module for a proprietary storage driver is available in source form. On FreeBSD, the module loads successfully with `kldload`. On NetBSD, the same module fails to load with `modload`. The administrator suspects the module was compiled for the wrong kernel API. What is the most likely reason for the failure?

   • ANetBSD does not support kernel modules at all.
   • BThe module needs to be loaded with `kldload` on NetBSD as well.
   • CThe module is too large for NetBSD's kernel module loader.
   • DNetBSD uses a different kernel module format and API than FreeBSD, so the module must be recompiled for NetBSD.
   Reveal Solution Discussion Select an answer first