Linux 6 Review and Quiz

To which directory will the test ZFS volume from the previous question be mounted by the ZFS system?

/test

You want to view log files to get information about a problem that occurred during a Linux installation. In which directory will you likely find the log files?

/var/log

Linux servers are typically installed in a rack using rackmount server hardware. Which of the following describes the minimum height of a rackmount server?

1U

What component of a Linux server is used to connect to a Fibre Channel SAN?

FC HBA

BTRFS filesystems do not need to be checked for errors as they are resilient to data corruption. True or False?

False

DM-MPIO can be configured to provide multiple, redundant connections to data stored on a SAN. True or False?

False

ZFS volumes are mounted at boot time from entries within /etc/fstab by default. True or False?

False

When viewing the output of the lsmod command, you notice several modules that start with vmw. What does this indicate?

Linux is running as a guest operating system.

Which of the following RAID levels is not fault tolerant?

RAID 0

What type of redundant storage configuration is most common for hosting the operating system and applications on a server?

RAID 1

Which of the following could result in a segmentation fault (fatal signal 11) during a Fedora installation?

RAM problems overclocked CPU faulty hardware components

Which of the following commands will display the current CPU(s) detected by a Linux system?

cat /proc/cpuinfo The /proc/cpuinfo file contains information about the CPU(s) that have been detected by the Linux operating system. You can use the cat command to display it out to the terminal screen.

Which command can you use during a system rescue to switch from the root of the live OS to the root of the Linux system installed on the hard disk?

chroot

Which command should you run after installing a new kernel module to update the module dependency database?

depmod The depmod command can be used to update the module dependency database.

Which of the following commands will display messages that were displayed during the boot sequence by the kernel?

dmesg The dmesg command will display messages that were displayed by the kernel during boot.

Which of the following is a type of software that allows a piece of hardware to host multiple operating systems?

hypervisor A hypervisor is a type of software that allows multiple operating systems to run as guest operating systems on a single piece of hardware. They come in type 1 and type 2 versions.

Which of the following describes a computer that is used to access an iSCSI hard disk across the network?

iSCSI initiator

Where is the /proc filesystem stored?

in RAM

Which of the following commands can be used on a modern Linux system to view hardware information that was captured at the beginning of the boot process?

journalctl -k

In order to create and manage KVM or Qemu virtual machines, a Linux system must have which of the following installed?

libvert The libvert virtualization libraries must be installed in order to create and manage KVM or Qemu virtual machines.

Which of the following commands can be used to display general hardware information for the entire system?

lshw The lshw command displays general hardware information for the entire system.

Which of the following commands can quickly determine whether your network hardware was detected properly following a Linux installation?

lshw -class network

Leonard wants to find detailed information about the Bluetooth kernel module. Which of the following commands can he use to display this information?

modinfo bluetooth The modinfo command can be used to display detailed information about a kernel module. In this case, by specifying Bluetooth as the parameter, it will display information about the Bluetooth module.

Which of the following is not a type of RAID?

serial RAID

Which type of RAID can be entirely configured during the Linux installation process?

software RAID

When configuring a virtual hard disk file, which term refers to the feature that allows the virtual hard disk file to expand dynamically as space is requested by the guest operating system?

thin provisioning

On a system using the KVM hypervisor, which of the following modules would you expect to see as part of the output of the lsmod command on a guest Linux virtual machine?

virtio On a system using the KVM hypervisor, the modules that are loaded on a guest Linux operating system start with virtio.

What command can be used to create a ZFS volume called test from the space on /dev/sdb and /dev/sdc that functions like RAID level 1?

zpool create test mirror /dev/sdb /dev/sdc