Ch.6 Linux Server Deployment

What type of redundant storage configuration is most common for hosting the operating system and applications on a server? a. RAID 5 b. ZFS c. RAID 1 d. SAN + DM-MPIO

a. RAID 5

Which command should you run after installing a new kernel module to update the module dependency database? a. depmod b. modprobe c. lsmod d. insmod

a. depmod

Which of the following refers to the minimum height of a rackmount server? a. L1 b. 1U c. R0 d. CAT1

b. 1U

Which of the following is used to describe a computer that is used to access an iSCSI hard disk across the network? a. iSCSI target b. iSCSI requestor c. iSCSI initiator d. iSCSI terminator

c. iSCSI initiator

Which of the following is not a type of RAID? a. hardware RAID b. software RAID c. firmware RAID d. serial RAID

d. serial 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? a. thick provisioning b. Type 1 c. thin provisioning d. Type 2

c. thin provisioning

To which directory will the test ZFS volume from the previous question be mounted by the ZFS system? a. /mnt/test b. /media/test c. /zfs/test d. /test

d. /test

Each SCSI device attached to a system must be assigned an ID number. What is this ID number called? a. device ID b. target ID c. SCSI controller d. SCSI number

b. target ID

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? a. zpool create test /dev/sdb /dev/sdc b. zpool create test mirror /dev/sdb /dev/sdc c. zpool create test raidz /dev/sdb /dev/sdc d. zpool create test raidz2 /dev/sdb /dev/sdc

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

Your system currently contains a single SAS storage device that hosts the root filesystem. After installing the correct module for your Fibre Channel HBA, what device file can you use to access your Fibre Channel SAN storage? a. /dev/fc0 b. /dev/sda c. /dev/sdb d. /dev/fc/0

c. /dev/sdb

Which of the following RAID configurations would be best to provide fault tolerance for the storage devices that hold the root filesystem within a server system? a. firmware, hardware, software, or ZFS RAID level 5 b. Fibre Channel or iSCSI SAN c. firmware, hardware, software, or ZFS RAID level 6 d. firmware, hardware, software, or BTRFS RAID level 1

d. firmware, hardware, software, or BTRFS RAID level 1

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

True

Which type of RAID is entirely configured during the Linux installation process? a. hardware RAID b. software RAID c. firmware RAID d. serial RAID

b. software RAID

What component of a Linux server is used to connect to a Fibre Channel SAN? a. FC initiator b. FC target c. FC HBA d. WWPN

c. FC HBA

Which of the following commands can be used to create and manage a software RAID configuration after installation? a. madam b. raidadm c. mdadm d. dmadm

c. mdadm

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

False

Which command can you use during a system rescue to switch from the root of the live Linux system to the root of the Linux system installed on the hard disk? a. mount b. sysimage c. chroot d. rescue

c. chroot

Which of the following RAID levels is not fault tolerant? a .RAID 0 b. RAID 1 c. RAID 4 d. RAID 5

a .RAID 0

Which of the following can be used to create and manage KVM/QEMU virtual machines on a Linux system? (Choose all that apply.) a. Boxes b. virsh c. SPICE d. Virtual Machine Manager

a, b, d

Linux servers are typically installed in a rack using rackmount server hardware. Which of the following is used to describe the minimum height of a rackmount server? a. 1U b. Series A c. Type A d. Level 5

a. 1U

If a Linux installation ends abnormally and the screen displays a fatal signal 11 error, what type of error has occurred? a. IRQ fault b. page fault c. segmentation fault d. RAM failure

c. segmentation fault

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

True

Where is the /proc filesystem stored? a. in RAM b. on the hard disk drive in the / directory c. on the hard disk drive in the /etc directory d. on the hard disk drive in the /var directory

a. in RAM

When viewing the output of the lsmod command, you notice several modules that start with vmw. What does this indicate? a. Linux is running as a guest operating system. b. Device drivers need to be installed on your system. c. There is no virtual memory in your system. d. The system is running the KVM hypervisor.

a. Linux is running as a guest operating system.

Which of the following commands can you use on a Linux server to configure a connection to an iSCSI target following installation? a. fcstat b. mpathconf c. iscsiadm d. multipath

c. iscsiadm

Select the command that can be used to change the root filesystem to a different directory, such as when you are in a rescue environment. a. chroot b. croot c. set_root d. change_root

a. chroot

When running Linux within a Microsoft Hyper-V virtual machine, which of the following modules would you expect to see as part of the output of the lsmod command that provide the necessary drivers for virtualized hardware? a. hv_ b. virtio c. vmw d. hyperv_

a. hv_

In order to create and manage KVM or QEMU virtual machines, a Linux system must have which of the following installed? a. libvirt b. virsh c. libvm d. vmlib

a. libvirt

During the creation of a BTRFS filesystem, you can provide different levels of fault tolerance for the inode table and data blocks on a filesystem. What BTRFS term is used to describe the inode table? a. metadata b. system c. inum d. data

a. metadata

Which of the following commands will list messages that were displayed during the boot sequence by the kernel? (Choose all that apply.) a. logger --boot b. dmesg c. cat /var/log/boot d. journalctl -k

b, d

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? a. /root/log b. /sys/log c. /var/log d. /etc/log

c. /var/log

Which of the following commands can quickly determine whether your network hardware was detected properly following a Linux installation? a. cat /proc/modules/network b. lspci c. lshw -class network d. dmesg

c. lshw -class network

Lou has configured multiple SAN connections on his Linux system and would like to implement DM-MPIO. What command can Lou run to automatically detect the SAN connections and create a default MPIO configuration? a. fcstat b. multipath c. mpathconf d. iscsiadm

c. mpathconf

Which of the following could result in a segmentation fault (fatal signal 11) during a Fedora installation? a. RAM problems b. overclocked CPU c. faulty hardware components d. all of these

d. all of these

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? a. less /var/log/boot.log b. less /var/log/messages c. less /var/log/syslog d. journalctl -b

d. journalctl -b