Authentic Best resources for LFCS Test Engine Practice Exam [Q82-Q106] : Valid Premium Exam : http://premium.validexam.com

QUESTION 82
Which of the following commands is used to update the list of available packages when using dpkg based package management?

apt-get update

apt-get upgrade

apt-cache update

apt-get refresh

apt-cache upgrade

QUESTION 83
Which of the following fields are available in both the global /etc/crontab file as well as in user-specific crontab files? (Select TWO correct answers)

Year

Minute

Username

Command

QUESTION 84
Which of the following commands can be used to create a USB storage media from a disk image?

gdisk

fdisk

mount

QUESTION 85
The script, script.sh, consists of the following lines:
#!/bin/bash
echo $2 $1
Which output will appear if the command, ./script.sh test1 test2, is entered?

test1 test2

test2 test1

script.sh test2

script.sh test1

test1 script.sh

QUESTION 86
How is a display manager started?

It is started by a user using the command startx.

It is started like any other system service by the init system.

It is started by inetd when a remote hosts connects to the X11 port.

It is started automatically when a X11 user logs in to the system console.

QUESTION 87
What can the Logical Volume Manager (LVM) be used for? (Choose THREE correct answers.)

To create RAID 9 arrays.

To dynamically change the size of logical volumes.

To encrypt logical volumes.

To create snapshots.

To dynamically create or delete logical volumes.

QUESTION 88
Which character starts a comment line in a shell script file?

;

QUESTION 89
How can the current directory and its subdirectories be searched for the file named MyFile.xml?

find . -name MyFile.xml

grep MyFile.xml | find

grep -r MyFile.xml .

less MyFile.xml

search Myfile.xml ./

QUESTION 90
Which of the following commands will reduce all consecutive spaces down to a single space?

tr ‘s’ ‘ ‘ < a.txt > b.txt

tr -c ‘ ‘ < a.txt > b.txt

tr -d ‘ ‘ < a.txt > b.txt

tr -r ‘ ‘ ‘n’ < a.txt >b.txt

tr -s ‘ ‘ < a.txt > b.txt

QUESTION 91
Which of the following commands can be used to locate programs and their corresponding man pages and configuration files?

dirname

which

basename

query

whereis

QUESTION 92
Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

dd if=/dev/zero of=/dev/sda bs=512

dd if=/dev/zero of=/dev/sdabs=512 count=1

dd if=/dev/zero of=/dev/sda bs=440 count=1

dd if=/dev/zero of=/dev/sda bs=440

QUESTION 93
Which of the following steps prevents a user from obtaining an interactive login session?

Run the command chsh -s /bin/false with the user name.

Set the UID for the user to 0.

Remove the user from the group staff.

Add the user to /etc/noaccess.

Create a .nologin file in the user’s home directory.

QUESTION 94
Which command makes the shell variable named VARIABLE visible to subshells?

export $VARIABLE

export VARIABLE

set $VARIABLE

set VARIABLE

env VARIABLE

QUESTION 95
CORRECT TEXT
In an xinetd configuration file, which attribute specifies the network address that will be used to provide the service?

QUESTION 96
CORRECT TEXT
Which command is used to sync the hardware clock to the system clock? (Specify ONLY the command without any path or parameters.)

QUESTION 97
What is the purpose of the file /etc/profile?

It contains the welcome message that is displayed after login.

It contains security profiles defining which users are allowed to log in.

It contains environment variables that are set when a user logs in.

It contains default application profiles for users that run an application for the first time.

QUESTION 98
Which of the following commands will send output from the program myapp to both standard output (stdout) and the file file1.log?

cat < myapp | cat > file1.log

myapp 0>&1 | cat > file1.log

myapp | cat > file1.log

myapp | tee file1.log

tee myapp file1.log

QUESTION 99
Which of the following are tasks handled by a display manager like XDM or KDM? (Choose TWO correct answers.)

Start and prepare the desktop environment for the user.

Configure additional devices like new monitors or projectors when they are attached.

Handle the login of a user.

Lock the screen when the user was inactive for a configurable amount of time.

Create an X11 configuration file for the current graphic devices and monitors.

QUESTION 100
Which of the following commands reboots the system when using SysV init? (Choose TWO correct answers.)

shutdown -r now

shutdown -r “rebooting”

telinit 6

telinit 0

shutdown -k now “rebooting”

QUESTION 101
Which of the following command sequences overwrites the file foobar.txt?

echo “QUIDQUIDAGIS” >> foobar.txt

echo “QUIDQUIDAGIS” < foobar.txt

echo “QUIDQUIDAGIS” > foobar.txt

echo “QUIDQUIDAGIS” | foobar.txt

QUESTION 102
Which of the following commands lists the dependencies of a given dpkg package?

apt-cache depends-on package

apt-cache dependencies package

apt-cache depends package

apt-cache requires package

QUESTION 103
Which command will display the last line of the file foo.txt?

head -n 1 foo.txt

tail foo.txt

last -n 1 foo.txt

tail -n 1 foo.txt

QUESTION 104
When running the command sed -e “s/a/b/” /tmp/file >/tmp/file While /tmp/file contains data, why is /tmp/file empty afterwards?

The file order is incorrect. The destination file must be mentioned before the command to ensure redirection.

The command sed did not match anything in that file therefore the output is empty.

When the shell establishes the redirection it overwrites the target file before the redirected command starts and opens it for reading.

Redirection for shell commands do not work using the > character. It only works using the | character instead.

QUESTION 105
Which of the following commands can be used to determine how long the system has been running? (Choose TWO correct answers.)

uptime

top

uname -u

time -up

QUESTION 106
Which of the following is the device file name for the second partition on the only SCSI drive?

/dev/hda1

/dev/sda2

/dev/sd0a2

/dev/sd1p2