201-450 sample questions

Question 1

Which of the following commands restores only those files containing Ipi in their name from the archive lpifiles.tar.gz?

Accepted Answer

tar xvzf lpifiles.tar.gz --wildcards ‘*lpi*’

Answer

tar -xvzf Ipifiles.tar.gz --subdirs ‘*lpi*’

Answer

tar xvzf Ipifiles.tar.gz --globbing ‘*lpi*’

Answer

tar xvzwf Ipifiles.tar.gz ‘*lpi*’

Answer

tar -xvfz lpifiles.tar.gz --deep ‘*lpi*’

Question 2

What command will remove a physical volume from a volume group? (The options contain ONLY the command without the path or parameter.)

Accepted Answer

vgreduce

Answer

vxreduce

Answer

vgshrink

Answer

vrshrink

Question 3

How is the source code for the main Linux kernel modules distributed?

Accepted Answer

It is included with the Linux kernel source code

Answer

It is provided as a separate download alongside the Linux kernel source code for the same version

Answer

The kernel modules are downloaded on demand as they are used during compilation

Answer

The kernel modules have their own release cycle and can be maintained separately from the Linux kernel source

Question 4

Which is the main configuration file for the SystemV init process? (Specify the full name of the file, including path)

Accepted Answer

/etc/inittab

Answer

\etc\inttab

Answer

/var/etc/init

Answer

/var/etc/bin/inittab

Question 5

Which of the following commands creates a Btrfs subvolume named volume in/mnt?

Accepted Answer

btrfs subvolume create /mnt/volume

Answer

btrfs subvolume new volume /mnt

Answer

btrfs create subvolume /mnt volume

Answer

btrfs subvolume add -n volume /mnt

Answer

btrfs-subvolume create Zmnt/volume

Question 6

Which of the following configuration files are used by tcpwrapper?

Accepted Answer

/etc/hosts.allow and /etc/hosts.deny

Answer

/etc/tcpwrapper.allow and /etc/tcpwrapper.deny

Answer

/etc/tcpd.allow and etc/tcpd.deny

Answer

/etc/service.allow and /etc/service.deny

Answer

/etc/access.allow and /etc/access.deny

Question 7

Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters)

Accepted Answer

Isof

Answer

contains

Answer

Is_in

Answer

lmhosts

Question 8

Which of the following properties should be recorded in order to monitor the quality of a network link? (Choose two.)

Accepted Answer

Effective Latency

Accepted Answer

Bandwidth in both directions

Answer

Number of nodes using the link

Answer

Number of used TCP por

Answer

Number of IPv4 and IPv6 packet

Question 9

What information is found in the following excerpt from the file /proc/mdstat? (Choose two.)

Accepted Answer

One of the disks in /dev/md0 has failed and a spare disk is used to recreate full redundancy

Accepted Answer

The information [UU_] means, that the raid is missing one disk and is not fully redundant

Answer

The information [3/2] means that 3 RAID disks belong to the array and 2 disks are spare. Together they equal the number of available disks

Answer

The device is using version 1.2 metadata to allow LILO and GRUB Legacy to use /dev/mdO as the boot partition. This would not have been necessary with GRUB2

Answer

The spare disk /dev/sda1 is used to restore full redundancy after the current recovery

Question 10

Which command reports information on memory usage, paging and block input/output?

Accepted Answer

vmstat

Answer

pidof

Answer

isof

Answer

free

Answer

memshow

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