Chapter 4: Linux Troubleshooting and Diagnostics

1. C. SATA disks are addressed as /dev/sdX, just like a SCSI disk. /dev/hdX is a traditional ATA disk. The other options do not exist.
2. B. The lsusb command is used to obtain a basic list of USB devices on a system. The other commands are not valid. In the case of answer D, the ls command is valid, but there is no --usb option.
3. C. The keyword single given on the Linux kernel command line will boot the system into single user mode. The other options are not valid.
4. B. Checking to ensure that the disk is detected in the BIOS is a good first step in troubleshooting. Answer A, unplugging the disk, won’t help it to be detected. Restarting the web server won’t help detect the disk, and the disk-detect command does not exist.
5. A. The ls command from within the grub > prompt will show the available partitions in a format such as (hd0,1).
6. A. With cable select, ATA drives will be detected in the order in which they are plugged in...