UNIX 3

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

segmentation fault

Which command below provides the easiest method for monitoring free space on mounted filesystems?

df

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?​

​/var/log/boot.log

The quotas for certain users can be edited by using which command?

edquota

Which device file below represents the first primary partition on the second PATA hard disk drive?

/dev/hdb1

What file system below is used by software programs that write to a CD-RW or DVD-RW drive?

udf

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

mdadm

Errors on a filesystem are common on most filesystems. What do these errors indicate?

filesystem corruption

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

​/proc/cpuinfo

Select the command that can be used to create partitions that will be stored in an MBR after installation:

fdisk

What hex code is associated with a Linux swap type partition?

82

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

modules

What command can be used to check different kinds of filesystems on Linux for errors?

fsck

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

chroot

Select the command below that shows the size of a directory and its contents in kilobytes:​

du

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

ZFS volume

The mkfs command can be issued with what switch in order to specify a filesystem type?

-t

To mount all filesystems in the /etc/fstab file that are intended to mount at boot time, what command can be used?

mount -a

In the fdisk interactive mode, what letter can be used to save changes to the partition table and exit?

W

Data is read from physical hard drives in concentric circles known as which of the following?

tracks

Select the command that can be used to check an ext2, ext3, or ext4 filesystem:

mke2fs

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

zfs get all

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?

journald

In what filesystem are most of the operating system files contained?

root

Each SCSI device attached to a system must be assigned an ID number. What is this ID number called?

target ID

What command below can be used to create a new physical volume

pvcreate

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

15

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

SCSI-3 Ultra2 Wide

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

ioports

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?

1024

In the event that you wish to disable a swap partition, what command must be used?​

swapoff

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

RAID5

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

loadavg

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?

/proc/meminfo

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

127

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

7

What character device file represents the second serial port on a system (COM2)?

/dev/ttyS1

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:

RAID-Z

Which option, when used with the mount command, enables loopback mode so that an iso image can be mounted onto a directory?​

​–loop

A device that transfers data in a character-by-character fashion is referred to as what type of device?

character

T or F: Volumes can contain a filesystem but they can’t be mounted to directories within the Linux filesystem hierarchy

True

T or F: The minimum height of a rackmount server is 2 inches; this is called a 1U server.

False

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

True

T or F: Each device attached to a system can be represented by multiple device files.

False

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

True

T or F: In Linux, you are restricted to using only one type of filesystem on a system.

False

T or F: 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.

True

T or F: The more filesystems that are used on a system, the less likely a corrupted filesystem will interfere with normal system operations.

True

T or F: 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.

True

T or F: When you insert a DVD while in a GUI environment, it is automatically mounted by the system to a directory underneath the /media directory that is named for the label on the DVD.

True

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