Given the following situation, list any log files or commands that you would use when collecting information during the troubleshooting process

a. A CD_ROM device that worked previously with Linux does not respond to the mount command.

b. The system was unable to mount the /home filesystem (/dev/sdaa6)

c. A new database application fails to start successfully

d. The Modem Manager utility that you have installed cannot recognize any modems on the system

e. You have installed a new sound card in the Linux system, but it is not listed within any sound utility.