LPI 201-450 問題練習

Question No : 1
Due to extreme system use, a Linux system requires some additional swap space. To initialize 5GB of additional swap space, which combination of commands should be used?

• A.dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; mount /tmp/swapfile
• B.dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; swapon /tmp/swapfile
• C.dd if=/dev/zero of=/tmp/swapfile bs=1024 count=5120000; mkswap /tmp/swapfile; swapon /tmp/swapfile
• D.touch -5G /tmp/swapfile; swapon /tmp/swapfile
• E.mkswap /tmp/swapfile 512000; swapon /tmp/swapfile

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正解:

Question No : 2
What keyword is missing in the following line from /etc/fstab in order to make a USB flash device writeable by the user fred when mounted:
/dev/sda1 /mnt/usbflash vfat defaults,users,______=fred,umask=022, 0 0
(Provide the option name only without any settings)

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正解: uid

Question No : 3
Which directory in /dev/disk/ can be used to determine the UUID of a connected hard disk?

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正解: /dev/disk/by-uuid, by-uuid, /dev/disk/by-uuid/

Question No : 4
What is the main template file used by autofs?

• A.default.maps
• B.auto.conf
• C.auto.master
• D.autofs.master

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正解:

Question No : 5
Which of the following are common Linux filesystem types used for root partitions? (Choose THREE correct answers.)

• A.ext4
• B.VFAT
• C.NTFS
• D.XFS
• E.Btrfs

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正解:

Question No : 6
What is the purpose of the smartd daemon?

• A.It is a user space daemon used for reading smart cards and integrated circuit chips.
• B.It attempts to automatically repair file systems upon a failed file system check.
• C.It monitors process activity and helps the kernel decide which processes to kill when the kernel overcommits.
• D.It monitors certain disk drives and attempts to predict when they will fail.

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正解:

Question No : 7
Which command is used to create a ISO9660 filesystem? (Specify ONLY the command without any path or parameters.)

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正解: mkisofs, genisoimage

Question No : 8
Which command turns an existing ext2 filesystem non-destructively into an ext3 filesystem? (Specify ONLY the command without any path or parameters.)

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正解: /sbin/tune2fs, tune2fs

Question No : 9
What does a 0 in the last field (fsck order) of /etc/fstab indicate about the filesystem?

• A.The filesystem should be checked before filesystems with higher values.
• B.The filesystem should be checked after filesystems with higher values.
• C.The filesystem check counter is ignored.
• D.The filesystem has been disabled from being checked and mounted on the system.
• E.The filesystem does not require an fsck check when being mounted.

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正解:

Question No : 10
After a lot of write operations, the administrator want to ensure that the kernel flushes the file system buffers to disk. Which command will accomplish this? (Specify ONLY the command without any path or parameters.)

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正解: sync

Question No : 11
Consider the following /etc/fstab file:
/dev/hda1 swap swap defaults 0 0
/dev/hda2 / ext2 defaults 1 1
/dev/hda3 /home ext2 defaults 1 2
none /proc proc defaults 0 0
/dev/sdb1 /media/usb0 vfat user,noauto 0 0
What is one of the possible commands that an ordinary (non-root) user can use to mount the /dev/sdb1 partition on the /media/usb0 mount point? (Please enter the command with all parameters and/or options but without any file system type options.)

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正解: mount /dev/sdb1, mount /media/usb0, /bin/mount /dev/sdb1, /bin/mount /media/usb0, mount /media/usb0/, /bin/mount /media/usb0/

Question No : 12
Which files are updated as devices are mounted and unmounted to provide information on the currently mounted devices and the options used? (Choose TWO correct answers.)

• A./proc/dtab
• B./etc/mtab
• C./etc/fstab
• D./proc/mounts
• E./proc/devices

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正解:

Question No : 13
What are the main network services used by the PXE protocol? (Choose TWO correct answers.)

• A.DNS
• B.DHCP
• C.HTTP
• D.TFTP
• E.NFS

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正解:

Question No : 14
Which command is used to install a new LILO boot loader?

• A.lilo
• B.lilo-config
• C.lilo-install
• D.install-lilo

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正解:

Question No : 15
A server requires a GRUB2 boot option which will always boot to runlevel 1. Which line of a GRUB2 configuration file starts the beginning of the settings needed to make this new choice available?

• A.initrd
• B.linux
• C.menuentry
• D.runlevel

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正解: