Term
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Definition
| The directory off the root where device files are typically stored. |
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Term
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| A file used to specify which filesystems to mount automatically at boot time and queried by the mount command if an insufficient number of arguments are specified. |
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Definition
| A file that stores a list of currently mounted filesystems. |
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Definition
| A file that contains currently used device information. |
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Definition
| The areas of a storage medium unable to store data properly. |
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Definition
| The unit of data commonly used by filesystem commands; a block can contain several sectors. |
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| The storage devices that transfer data to and from the system in chunks of many data bits by caching the information in RAM; they are represented by block device files. |
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| A command used to configure btrfs filesystem options and check btrfs filesystems for errors. |
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| A command used to partition hard disks; displays a graphical interface in which the user can select partitioning options. |
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Definition
| The storage devices that transfer data to and from the system one data bit at a time; they are represented by character device files. |
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Definition
| A series of tracks on a hard disk that are written to simultaneously by the magnetic heads in a hard disk drive. |
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Definition
| A file used by Linux commands that represents a specific device on the system; these files do not have a data section and use major and minor numbers to reference the proper driver and specific device on the system, respectively. |
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Term
| df (disk free space) command |
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Definition
| A command that displays disk free space by filesystem. |
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Term
| du (directory usage) command |
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Definition
| A command that displays directory usage. |
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Term
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Definition
| A command used to specify quota limits for users and groups. |
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Term
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Definition
| A command used to create, delete, and manipulate partitions on hard disks. |
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Term
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Definition
| The organization imposed on a physical storage medium that is used to manage the storage and retrieval of data. |
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Term
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Definition
| The errors in a filesystem structure that prevent the retrieval of stored data. |
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Term
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Definition
| The process in which a filesystem is placed on a disk device. |
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Term
| fsck (filesystem check) command |
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Definition
| A command used to check the integrity of a filesystem and repair damaged files. |
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Term
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Definition
| A command used to identify any users or processes using a particular file or directory. |
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Term
| gdisk (GPT fdisk) command |
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Definition
| A command used to create partitions on a GPT hard disk. It uses an interface that is very similar to fdisk. |
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Term
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Definition
| The limits on the number of files, or total storage space on a hard disk drive, available to a user. |
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Term
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Definition
| A hard disk quota that the user cannot be exceed. |
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Term
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Definition
| A volume that is managed by the LVM and comprised of free space within a VG. |
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Term
| Logical Volume Manager (LVM) |
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Definition
| A set of software components within Linux that can be used to manage the storage of information across several different hard disks on a Linux system. |
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Term
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Definition
| A command used to create LVM logical volumes. |
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Term
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Definition
| A command used to view LVM logical volumes. |
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Term
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Definition
| The number used by the kernel to identify which device driver to call to interact properly with a given category of hardware; hard disk drives, CDs, and video cards are all categories of hardware; similar devices share a common major number. |
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Term
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Definition
| The number used by the kernel to identify which specific hardware device, within a given category, to use a driver to communicate with. See also major number. |
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Term
| mkfs (make filesystem) command |
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Definition
| A command used to format or create filesystems. |
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Term
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Definition
| A command used to create an ISO image from one or more files on the filesystem. |
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Term
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Definition
| A command used to re-create a device file, provided the major number, minor number, and type (character or bock) are known. |
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Term
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Definition
| A command used to prepare newly created swap partitions for use by the Linux system. |
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Term
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Definition
| A command used to mount filesystems on devices to mount point directories. |
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Term
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Definition
| The directory in a file structure to which something is mounted. |
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Term
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Definition
| A process used to associate a device with a directory in the logical directory tree such that users can store data on that device. |
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Term
| parted (GNU Parted) command |
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Definition
| A command used to create partitions on a GPT or MBR hard disk. |
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Term
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Definition
| A physical division of a hard disk drive. |
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Term
| physical extent (PE) size |
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Definition
| The block size used by the LVM when storing data on a volume group. |
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Term
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Definition
| A hard disk partition that is used by the LVM. |
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Term
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Definition
| A command used to create LVM physical volumes. |
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Term
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Definition
| A command used to view LVM physical volumes. |
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Term
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Definition
| A command used to view LVM physical volumes. |
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Term
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Definition
| A command used to view disk quotas imposed on a user. |
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Term
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Definition
| A command used to deactivate disk quotas. |
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Term
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Definition
| A command used to activate disk quotas. |
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Term
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Definition
| The limits that can be imposed on users and groups for filesystem usage. |
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Term
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Definition
| A command used to produce a report on quotas for a particular filesystem. |
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Term
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Definition
| The filesystem that contains most files that make up the operating system; it should have enough free space to prevent errors and slow performance. |
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Term
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Definition
| The smallest unit of data storage on a hard disk; sectors are arranged into concentric circles called tracks and can be grouped into blocks for use by the system. |
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Term
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Definition
| A command used to disable a partition for use as virtual memory on the Linux system. |
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Term
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Definition
| A command used to enable a partition for use as virtual memory on the Linux system. |
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Term
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Definition
| The process of writing data to the hard disk drive that was stored in RAM. |
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Term
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Definition
| The area on a hard disk that forms a concentric circle of sectors. |
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Term
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Definition
| A command used to modify ext2 and ext3 filesystem parameters. |
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Term
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Definition
| A command used to break the association between a device and a directory in the logical directory tree. |
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Term
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Definition
| A command used to create LVM VG. |
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Term
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Definition
| A command used to view LVM VG. |
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Term
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Definition
| A command used to add additional physical volumes to an LVM VG. |
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Term
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Definition
| A command used to view LVM VGs. |
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Term
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Definition
| A group of PVs that are used by the LVM. |
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Term
Which of the following commands can be used to create partitions on either a MBR or GPT hard disk?
a. gdisk
b. cfsck
c. fdisk
d. parted |
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Definition
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Term
| After a partition on a hard disk drive is formatted with a filesystem, all partitions on that hard disk drive must use the same filesystem. True or False? |
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Definition
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Term
You want to see the filesystems that are presently in use on the system. What command could you use?
a. cat /etc/fstab
b. ls -l /etc/fstab
c. cat /etc/mtab
d. ls -l /etc/fstab |
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Definition
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Term
Jim has just purchased two new SCSI hard disk drives and a controller card for them. He properly installs the hardware in his machine. Before he can use them for data storage and retrieval, what must he do? (Choose all that apply.)
a. Mount the two hard drives so they are accessible by the operating system.
b. Mount a filesystem to each of the hard disk drives.
c. Create one or more partitions on each of the hard disk drives.
d. Use the vi editor to edit /etc/mtab and create an entry for the controller card and the hard disk drives.
e. Mount any partitions created on the two hard drives such that they are accessible by the operating system. |
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Definition
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Term
Given the following output from /etc/fstab, which filesystems will be automatically checked on boot by the fsck command?
a. none, as fsck must be run manually for each filesystem
b. /, /dev/pts, and /dev/shm
c. /, /proc, and swap
d. all of them, as fsck is run automatically at boot for all filesystems |
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Definition
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Term
A user mounts a device to a mount point directory and realizes afterward there are files previously found within the mount point directory that are needed. What should this user do?
a. Nothing; the files are lost and cannot ever be accessed.
b. Nothing; the files could not have been there because you can only mount to empty directories.
c. Unmount the device from the directory.
d. Run the fsck command to recover the file.
e. Look in the lost+found directory for the file. |
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Definition
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Term
Which command is used to display the amount of free space that exists on a filesystem?
a. fsck
b. quota
c. du
d. df |
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Definition
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Term
What must you do to successfully run the fsck command on a filesystem?
a. Run the fsck command with the -u option to automatically unmount the filesystem first.
b. Choose yes when warned that running fsck on a mounted filesystem can cause damage.
c. Unmount the filesystem.
d. Ensure that the filesystem is mounted. |
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Definition
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Term
| Character devices typically transfer data more quickly than block devices. True or False? |
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Definition
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Term
What does the du /var command do?
a. shows the users connected to the /var directory
b. shows the size of all directories within the /var directory
c. dumps the /var directory
d. displays the amount of free space in the /var directory |
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Definition
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Term
What does the command dumpe2fs -h do?
a. backs up an ext2 filesystem
b. displays the number of inodes used and available in an ext2 filesystem
c. dumps an ext2 filesystem
d. is not a valid command |
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Definition
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Term
The first floppy drive on the system is not responding. You enter the file /dev/fd0 command and receive the following output. What is the problem?
[root@server1 root]# file /dev/fd0
/dev/fd0: ACII text
[root@server1 root]#
a. The floppy drive cable has come loose.
b. There is no floppy disk in the drive.
c. The device file has become corrupt.
d. The floppy drive is seen as a character device. |
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Definition
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Term
Which of the following statements are true? (Choose all that apply.)
a. Quotas can only limit user space.
b. Quotas can only limit the number of files a user can own.
c. Quotas can limit both user space and the number of files a user can own.
d. Hard limits can never be exceeded.
e. Hard limits allow a user to exceed them for a certain period of time.
f. Soft limits can never be exceeded.
g. Soft limits allow a user to exceed them for a certain period of time.
h. Either a hard limit or a soft limit can be set, but not both concurrently. |
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Definition
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Term
A device file ____________. (Choose all that apply.)
a. has no inode section
b. has no data section
c. has no size
d. displays a major and minor number in place of a file size
e. has a fixed size of 300 kilobytes |
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Definition
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Term
Which of the following statements regarding LVM structure is correct?
a. PVs are collections of VGs.
b. LVs are created from the free space available within PVs.
c. VGs are comprised of one or more PVs.
d. PVs use the space within LVs to create VGs. |
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Definition
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Term
| The lvextend command can be used to add additional unused space within a volume group to an existing logical volume. True or False? |
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Definition
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Term
You plug a USB flash memory drive into a system that has two SATA hard disks. How will the partition on this USB flash memory drive be identified by Linux?
a. /dev/sda1
b. /dev/sda2
c. /dev/sdb1
d. /dev/sdc1 |
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Definition
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Term
Which command mounts all existing filesystems in /etc/fstab?
a. mount -f
b. mount -a
c. mount /etc/fstab
d. mount /etc/mtab |
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Definition
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Term
A user runs the fsck command with the -a option on a filesystem that is showing signs of corruption. How would that user locate any files the system was unable to repair?
a. Look in the root of the filesystem.
b. The system prompts the user for a target location when it comes across a file it cannot repair.
c. Mount the filesystem and check the lost+found directory underneath the mount point.
d. View the contents of the directory /lost+found. |
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Definition
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Term
Which command is used to format a partition on a hard disk drive with the ext4 filesystem?
a. format_ext4 device
b. ext4mkfs device
c. e2mkfs -t ext4 device
d. makeext4FS device |
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Definition
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