ITN 170 Chapter 6 Study

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

b. False

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

b. False Device Mapper Multipath Input Output often shortened to DM-Multipathing and abbreviated as DM-MPIO provides input-output (I/O) fail-over and load-balancing by using multipath I/O within Linux for block devices.

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? a. hv_ b. virtio c. vmw d. hyperv_

b. virtio

Zettabyte File System (ZFS)

A high-performance filesystem and volume management software that is often used to create fault tolerance volumes from multiple storage devices on Linux and UNIX systems that are resilient to corruption.

RAID-Z

An implementation of RAID level 5 using ZFS, which uses a variable stripe that provides for better performance and fault tolerance.

Which of the following commands can be used to display general hardware information for the entire system? a. lshw b. lscpu c. hwdisp d. hware

a. lshw

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

b. False

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? a. mount b. sysimage c. chroot d. rescue

c. chroot

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

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

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

d. libvert

Logical Unit Number (LUN)

A unique identifier for each device attached to any given node in a SCSI chain.

GRUB (GRand Unified Boot loader)

The most common boot loader used on Linux systems. It loads and executes the Linux kernel at boot time.

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

a. 1U One U is 1.75 inches (44.45mm); the standard rack, at 19 inches, is 42U. Rack servers and other hardware designed to be rack-mounted are manufactured in multiples of 1.75 inches and specified in multiples of rack units, usually 1U, 2U, 3U or 4U.

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

Which of the following describes 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

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

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

d. depmod

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