Deck 6: Linux Server Deployment

Question 1

​Select the command that can be used to change the root filesystem to a different directory, such as when in a rescue environment.

A) ​change_root
B) ​chroot
C) ​set_root
D) ​croot

Answer 1

B

Question 2

Select the file in the /proc directory that contains statistics on the performance of the processor:

A) cpuinfo
B) modules
C) kcore
D) loadavg

Answer 2

D

Question 3

You are troubleshooting an issue that occurs on a Linux system during the boot process. What file can be viewed on most Linux systems to see processes that started successfully or unsuccessfully specifically during the boot process?​

A) ​/var/log/startup.log
B) ​/var/log/messages
C) ​/var/log/boot.log
D) ​/var/log/wtmp

Answer 3

C

Question 4

A computer connected to a remote hard disk via iSCSI is referred to as an iSCSI initiator.

Question 5

What file in the /proc directory contains information about a computer's CPU?​

A) ​/proc/proc_info
B) ​/proc/cpuinfo
C) ​/proc/meminfo
D) ​/proc/cpu_info

Question 6

You can use a small bootable Linux kernel (such as on a LiveCD) to fix problems related to the following: the boot loader; filesystems and partitions; the configuration file; and drivers.

Question 7

In some cases, the installation process fails to place a boot loader on the hard disk properly; this is often caused by hard drives with over what number of cylinders?

A) 256
B) 512
C) 1024
D) 2048

Question 8

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 number
D) SCSI controller

Question 9

In a SCSI chain the highest priority SCSI device is given what SCSI ID?

A) 1
B) 6
C) 7
D) 15

Question 10

Most Parallel SCSI controllers are capable of supporting up to how many devices?

A) 12
B) 13
C) 14
D) 15

Question 11

​A ZFS volume that uses a variable stripe size and requires a minimum of three hard disks to protect against single disk failure is known as:

A) ​RAID 5
B) ​ZFS Extended RAID
C) ​RAID-Z
D) ​RAID+

Question 12

What is the term for a ZFS managed filesystem that is created from ZFS pools?​

A) ​ZFS store
B) ​ZFS vault
C) ​ZFS volume
D) ​ZFS lake

Question 13

What SCSI type supports speeds of up to 80 MB/second?

A) SCSI-3 Ultra2 Wide
B) SCSI-2 Wide
C) SCSI-3 Ultra
D) SCSI-3 Ultra3 Wide

Question 14

To ensure that Linux has detected the correct amount of RAM in the system after installation, you should view the contents of what file in the proc directory?

A) /proc/mem
B) /proc/cpuinfo
C) /proc/memoryinfo
D) /proc/meminfo

Question 15

What file in the /proc directory contains a list of memory address ranges reserved for device use?

A) meminfo
B) ioports
C) iomem
D) misc

Question 16

What command is used to manage a software RAID configuration after installation?​

A) ​mdadm
B) ​mdraid
C) ​vgadm
D) ​pgadm

Question 17

SCSI devices that act as a gateway are associated with a unique Logical Unit Number (LUN)​

Question 18

RAID level 6 is basically the same as RAID level 5, but it adds a second set of parity bits for added fault tolerance ​and allows up to two simultaneous hard disk drive failures while remaining fault tolerant.

Question 19

​The minimum height of a rackmount server is 2 inches; this is called a 1U server.

Question 20

If a Linux installation ends abnormally and the screen displays a fatal signal 11 error, what type of error has occurred?

A) page fault
B) IRQ fault
C) segmentation fault
D) ​RAM failure

Question 21

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
A RAID configuration in which a single file is divided into sections, which are then written to different hard disks concurrently to speed up access time; this type of RAID is not fault tolerant. Also known as RAID 0.​

Question 22

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
​A RAID configuration consisting of two identical hard disks to which identical data are written in parallel, thus ensuring fault tolerance. Also known as RAID 1.

Question 23

​What RAID level is commonly referred to as disk striping with parity?

A) ​RAID0
B) ​RAID1
C) ​RAID4
D) ​RAID5

Question 24

Explain what can be done if a hardware device is not working.

Question 25

A RAID that is created by the system BIOS is referred to as ___________________.​

Question 26

Describe the iSCSI technology and explain how it is typically used and configured.

Question 27

Fault tolerant hard disk configurations are typically implemented by a(n) ____________________.

Question 28

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
​A SCSI technology that transfers data via TCP/IP networks.

Question 29

To view the hardware detected during boot time, you can use the ______________ command after system startup.

Question 30

Explain what a SCSI ID is and why it is used, and then list the priorities of a SCSI controller with 15 devices supported, from highest to lowest.

Question 31

​In Fedora 20, the logging system used to record the messages normally stored within the boot.log, messages, and syslog files has been replaced by a journaling database system called?

A) ​systemd
B) ​messaged
C) ​logd
D) ​journald

Question 32

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
​A type of RAID level 0 that allows two or more devices to be represented as a single large volume.

Question 33

What file under the proc directory contains information regarding what modules are currently loaded into the Linux kernel?​

A) ​modinfo
B) ​kmods
C) ​mod_info
D) ​modules

Question 34

The first software RAID volume on a system will​ use a multiple disk device file that starts with what number?

A) ​127
B) ​128
C) ​254
D) ​255

Question 35

Describe RAID level 5. What are the advantages of using RAID level 5 over other types of RAID?

Question 36

In order to list all configuration parameters that can be modified for a subfilesystem, what command should be issued?​

A) ​zpool list
B) zfs list​
C) ​zfs get all
D) ​zpool get all

Question 37

What is System Rescue? Explain how you would activate this tool.

Question 38

___________________ are groups of physical disks that ZFS can manage (local disks, SANs, shared devices, large raw files, remote shares, etc).​

Question 39

To prevent signals from bouncing back and forth on a SCSI cable, each end of the cable must have a(n) ____________________ to stop signals from being perpetuated.

Question 40

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
​A term that refers to a storage device within an iSCSI SAN.

Question 41

Which two problems below are typically seen on large systems that write large amounts of data to a non-ZFS filesystem?​

A) ​snapshotting
B) ​bit rot
C) ​misdirected writes
D) ​segment faults

Question 42

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
​The most common boot loader used on Linux systems. It loads and executes the Linux kernel at boot time.

Question 43

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
​A high-performance filesystem and volume management software that is often used to create volumes from multiple storage devices on Linux and UNIX systems.

Question 44

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
Term used to describe a CPU that runs faster than the clock speed for which it has been rated.​

Question 45

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
​A device used to terminate an electrical conduction medium to absorb the transmitted signal and prevent signal bounce.

Question 46

The ​state and performance of a RAID-Z volume can be viewed using what two commands?

A) ​zpool status
B) ​zfs iostat
C) ​zpool iostat
D) ​zfs status

Question 47

​Match each correct item with the statement below.
a.disk mirroring
b.disk striping​
c.​fault tolerant
d.GRUB​
e.​Internet SCSI
f.iSCSI target​
g.​overclocked
h.​spanning
i.terminator
j.​Zettabyte File System (ZFS)
Term used to describe a device that exhibits a minimum of downtime in the event of a failure.​

Question 48

​What two RAID types below utilize disk striping with parity, providing protection against one or two drive failures respectively?

A) ​RAID0
B) ​RAID1
C) ​RAID5
D) ​RAID6

Question 49

What terms describe a computer connected to a remote hard disk via iSCSI, and the remote hard disk?

A) ​iSCSI host
B) ​iSCSI initiator
C) ​iSCSI slave
D) ​iSCSI target

Question 50

Segmentation faults can sometimes be fixed by performing what two tasks below?​

A) ​turn off CPU cache memory
B) ​perform a full reinstall of OS
C) ​increase the number of memory wait states in BIOS
D) ​update the Linux kernel