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Total 161 questions Full Exam Access

Question 1

In which directory tree are files modified when changing kernel parameters using the command sysctl?

/sys/kernel/

/proc/kernel/

/proc/sys/

/lib/sys/

/sys/proc/

Question 2

Which of the following files are used to resolve hostnames to IP addresses? (Choose TWO correct answers.)

/etc/systems

/etc/hosts

/etc/network

/etc/dns.conf

/etc/resolv.conf

Question 3

Which of the following commands can be used to script interactions with various TCP or UDP services?

ftp

tcpdump

strings

wget

Question 4

Which commands are used to load modules into the Linux kernel? (Choose TWO correct answers.)

insmod

loadmod

kernload

modprobe

probemod

Question 5

What command is used to make an exact copy, at a single point in time, of a logical volume for backup purposes?

lvsnap

lvsnapshot

lvcreate

lvcopy

lvclone

Question 6

What option in the collectd configuration file is required in order to define what to start monitoring?

LoadModule

Module

Plugin

LoadPlugin

Question 7

Which of the following wireless tools can be used to check the wireless network link quality? (Choose TWO correct answers.)

iwconfig

iwlink

iwscan

iwifi

Question 8

Which of the following is an example path to a Linux software RAID array?

/dev/raid0

/dev/rd1

/dev/pr0

/dev/md1

Question 9

Which program lists information about files and network connections opened by processes? (Specify ONLY the command without any path or parameters.)
Solution:
lsof, /usr/bin/lsof

Does this meet the goal?

Yes

Question 10

The following command has just been run successfully: cd /opt; tar xvf /dev/nst0;
What will happen if the command sequence is run again?

An error saying that there is no tape present is generated because the tape has been ejected after being used.

The contents of /opt will be restored again.

The entire contents of /opt will be replaced with the contents of the next file on the tape.

The contents of /opt will have additional content added from the next file on the tape.

Question 11

Which of the following filter keywords for tcpdump specify the transfer direction for network packets? (Choose TWO correct answers.)

source

src

dest

src or dst

both

Question 12

When a makefile is included in a source code package, what are commonly defined targets in the file?

CFLAGS, CPPFLAGS, LIBS, LDFLAGS

clean, install, uninstall

PATHS, DESTDIR, LIBS, LDFLAGS

prefix, exec_prefix, bindir, mandir

Question 13

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

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

tar xvzwf lpifiles.tar.gz ‘*lpi*’

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

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

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

Question 14

In the following output from top, which processes contribute to the percentage of time that the CPU spends in the state of wa?
Tasks: 193 total, 1 running, 190 sleeping, 2 stopped, 0 zombie
Cpu(s): 0.5%us, 0.3%sy, 0.0%ni, 98.2%id, 1.0%wa, 0.0%hi, 0.0%si, 0.0%st

Processes waiting for user interaction.

Processes that were already closed and are waiting to be launched again.

Processes that have not been scheduled yet because they haven't been fully loaded into RAM or are in swap.

Processes waiting for IO operations to complete.

Question 15

Which of the following commands lists IPv4 addresses and MAC addresses of network nodes that the local system has seen on its directly connected IP networks?

arp

ifconfig

ipadm

iwlist

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Total 161 questions Full Exam Access