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Quiz von Carlos Alberto Jara Alva, aktualisiert more than 1 year ago
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Erstellt von Carlos Alberto Jara Alva
vor fast 7 Jahre
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Frage 1
Frage
What are common IRQs for RS-232 serial ports? (Select two)
Antworten
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1
-
3
-
4
-
8
-
16
Frage 2
Frage
What tool would you use to disable a motherboard's sound hardware if you don't want to use it?
Antworten
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The firmware
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The alsactl utility
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The lsmod command
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The lspci program
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None of the above; onboard sound devices can't be disabled
Frage 3
Frage
What is purpose of udev?
Antworten
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To aid in the development of software
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To unload Linux device drivers
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To load Linux device drivers
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To store devices' BIOS configurations in files
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To manage the /dev directory tree
Frage 4
Frage
You've just installed Linux on a new computer with a single SATA hard disk. What device identifier will refer to the disk?
Antworten
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/dev/sda
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/dev/mapper/disk1
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/dev/hda
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C:
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/dev/sda or /dev/hda
Frage 5
Frage
Which files contain essential system information such as IRQs, direct-memory access channels, and I/O addresses? (Select three).
Antworten
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/proc/ioports
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/proc/ioaddresses
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/proc/dma
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/proc/interrupts
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/proc/hardware
Frage 6
Frage
The fdisk -l /dev/sda on a Linux computer with an MBR disk produces a listing of four partitions: /dev/sda1, /dev/sda2, /dev/sda5 and /dev/sda6. which of the following true?
Antworten
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The disk contains two primary partitions and two extended partitions.
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Either /dev/sda1 or /dev/sda2 is an extended partition.
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The partition table is corrupted; there should be a /dev/sda3 and a /dev/sda4 before /dev/sda5
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If you add a /dev/sda3 with fdisk, /dev/sda5 will become /dev/sda6, and /dev/sda6 will become /dev/sda7
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Both /dev/sda1 and /dev/sda2 are logical partitions.
Frage 7
Frage
Which of the following directories is most likely to be placed on its own hard disk partition?
Antworten
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/bin
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/sbin
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/mnt
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/home
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/dev
Frage 8
Frage
What mount point should you associate with swap partitions?
Antworten
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/
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/swap
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/boot
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/mem
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None of the above
Frage 9
Frage
Which of the folllowing options is used with fsck to force it to use a particular filesystem type?
Antworten
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-A
-
-N
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-t
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-C
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-f
Frage 10
Frage
What does the following command accomplish?
#mkfs -t ext2 /dev/sda4
Antworten
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It sets the partition table type code for /dev/sda4 to ext2
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It converts FAT partition into an ext2fs partition without damaging the partition's existing files.
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Nothing; the -t option isn't valid, and so it causes mkfs to abort its operation.
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It converts an ext2 filesystem to an ext4 filesystem
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It creates a new ext2 filesystem on /dev/sda4, overwriting any existing filesystem and data.
Frage 11
Frage
Which of the following pieces of information can df not report?
Antworten
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How long the filesystem has been mounted
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The number of inodes used on an ext3fs partition
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The filesystem type of a partition
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The percentage of available disk space used on a partition.
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The mount point associated with a filesystem
Frage 12
Frage
To access file on a USB flash drive, you type mount /dev/sdc1 /media/flash as root. Which types of filesystems will this command mount?
Antworten
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Ext2fs
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FAT
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HFS
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ReiserFS
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All of the above
Frage 13
Frage
What filesystem options might you specify in /etc/fstab to make a removable disk (such as a USB flash drive) mountable by an ordinary user with a UID of 1000? (Select three)
Antworten
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user
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users
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owner
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owners
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uid=1000
Frage 14
Frage
What is the preferred method of adding a directory to the library path for all users?
Antworten
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Modify the LD_LIBRARY_PATH environment variable in a global shell script.
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Add the directory to the /etc/ld.so.conf file, and then type ldconfig.
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Type ldconfig /new/dir, where /new/dir is the directory you want to add.
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Create a symbolic link from that directory to one that's already on the library path.
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Type ldd /new/dir, where /new/dir is the directory you want to add.
Frage 15
Frage
What programs might you use to learn what your system's load average is? (Select two)
Antworten
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ld
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load
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top
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uptime
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la
Frage 16
Frage
Which of the following commands creates a display of processes, showing the parent-child relationships through links between their names?
Antworten
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ps --forest
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ps aux
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ps -e
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ps --tree
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All of the above
Frage 17
Frage
Which of the following commands are equivalent to one another? (Select two)
Antworten
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nice --value 10 crunch
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nice -n -10 crunch
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nice -10 crunch
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nice 10 crunch
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nice crunch
Frage 18
Frage
What command is used at the beginning of a command line to detach tha process from a terminal, allowing it to continue running after the user has logged out?
Antworten
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hangup
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detach
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nohup
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background
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bg
Frage 19
Frage
What command will display a full-screen, updated list of all running processes?
Antworten
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kill
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ps
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list
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top
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free
Frage 20
Frage
What command can be used to kill processes by name, rather than process ID?
Antworten
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killproc
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killname
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killall
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kill -name
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killpath
Frage 21
Frage
What command is used to display the number of free inodes on an ext2 or ext3 partition?
Antworten
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tune2fs
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dumpe2fs
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showe2fs
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fsck
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fdisk
Frage 22
Frage
What command is used to convert an existing ext2 partition (/dev/sda1) to an ext3 (journaled) partition?
Antworten
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tune2f -j /dev/sda1
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dumpe2fs -j /dev/sda1
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fsck -j /dev/sda1
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mkfs.ext2 -j /dev/sda1
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None of the above
Frage 23
Frage
Which of the following are examples of journaling filesystems? (Select three)
Antworten
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ext2
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ext3
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xfs
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reiserfs
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vfat
Frage 24
Frage
Which file defines what partitions are mounted at boot time?
Antworten
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/etc/partitions
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/etc/mount
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/etc/mtab
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/etc/fstab
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/etc/filesystems
Frage 25
Frage
Which of the following is a reasonable size for a swap partition for a Linux workstation with 128 MB RAM? Select one
Antworten
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1 KB
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0.5 MB
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100 MB
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5 GB
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10 GB
Frage 26
Frage
Which of the following is the text file that contains directories where the dynamic linker should look for libraries? Select one.
Antworten
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ld.so.conf
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conf.ld.so
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ld.so.cache
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so.config
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configld
Frage 27
Frage
What two commands display the status of processes on a Linux system?
Antworten
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ls and df
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ps and top
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ps and df
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df and top
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du and df
Frage 28
Frage
Which of the following commands can be used to check an ext2 filesystem? Select three that apply.
Antworten
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fsck -ext2 /dev/hda5
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fsck /dev/hda5
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e2fsck /dev/hda5
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fsck.ext2 /dev/hda5
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fsck.linux /dev/hda5
Frage 29
Frage
In response to fhe df command, the system reports a use% of 98% for the filesystem mounted on /home. Which one of the following best describes the significance of this information?
Antworten
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Files on /home are consuming 90% of the physical disk.
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File read/write activity on /home is consuming 98% of system I/O capacity
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Files on /home are consuming 98% of the /home filesystem
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Inodes on /home are nearly exhausted
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Inodes on /home are 98% free
Frage 30
Frage
Which one of the following commands would be best suited to mount a CD-ROM containing a Linux distribution, without depending on any configuration files?
Antworten
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mount /dev/cdrom /dev/hdc
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mount -f linux /dev/hdc /mnt/cdrom
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mount -t iso9660 /dev/cdrom /mnt/cdrom
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mount -t linux /dev/cdrom /mnt/cdrom
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mount -t iso9660 /mnt/cdrom /dev/cdrom
Frage 31
Frage
What character is used after a command line to indicate that tha command should run in the background and return shell control to the user?
Antworten
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*
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+
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&
-
-
-
.
Frage 32
Frage
A process with PID 4077 is misbehaving on your system. As superuset, you enter the following command:
#kill 4077
However, nothing changes as a result. What can you do to terminate the process? Select one
Antworten
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kill -9 4077
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kill -1 4077
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kill +9 4077
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kill 4078
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kill --die 4077
Frage 33
Frage
How many IDE devices can be installed and simultaneously used in a typical Intel-Based system? Select one
Antworten
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1
-
2
-
3
-
4
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5
Frage 34
Frage
Which of the following Linux filesystems preallocates a fixed number of inodes at the filesystem's make/ creation time and does NOT generate them as needed? (Choose TWO correct answers.)
Antworten
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ext3
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JFS
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ext2
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XFS
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procfs
Frage 35
Frage
Which of the following commands changes the number of days before the ext3 filesystem on /dev/sda1 has to run through a full filesystem check while booting?
Antworten
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tune2fs -d 200 /dev/sda1
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tune2fs -c 200 /dev/sda1
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tune2fs -i 200 /dev/sda1
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tune2fs -n 200 /dev/sda1
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tune2fs --days 200 /dev/sda1
Frage 36
Frage
Creating a hard link to an ordinary file returns an error. What could be the reason for this?
Antworten
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The source file is hidden.
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The source file is read-only.
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The source file is a shell script.
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The source file is already a hard link.
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The source and the target are on different filesystems.
Frage 37
Frage
Which of the following environment variables overrides or extends the list of directories holding shared libraries?
Antworten
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LD_LOAD_PATH
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LD_LIB_PATH
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LD_LIBRARY_PATH
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LD_SHARE_PATH
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LD_RUN_PATH
Frage 38
Frage
Which of the following is the device file name for the second partition on the only SCSI drive?
Antworten
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/dev/hda1
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/dev/sda2
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/dev/sd0a2
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/dev/sd1p2
Frage 39
Frage
When starting a program with the nice command without any additional parameters, which nice level is set for the resulting process?
Antworten
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-10
-
0
-
10
-
20
Frage 40
Frage
Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?
Antworten
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dd if=/dev/zero of=/dev/sda bs=512
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dd if=/dev/zero of=/dev/sda bs=512 count=1
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dd if=/dev/zero of=/dev/sda bs=440 count=1
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dd if=/dev/zero of=/dev/sda bs=440
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