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LFCS Linux Foundation Certified System Administrator Questions and Answers

Questions 4

Which command is used in a Linux environment to create a new directory? (Specify ONLY the command without any path or parameters.)

Options:

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Questions 5

Which of the following crontab entries will execute myscript at 30 minutes past every hour on Sundays?

Options:

A.

0 * * * 30 myscript

B.

30 * * * 6 myscript

C.

30 0 * * 0 myscript

D.

30 0-23 * * 0 myscript

E.

0 0-23 * * 30 myscript

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Questions 6

Which of the following details is NOT provided in any output from the netstat utility?

Options:

A.

broadcast services

B.

interface statistics

C.

masquerading connections

D.

network connections

E.

routing tables

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Questions 7

When trying to unmount a device it is reported as being busy. Which of the following commands could be used to determine which process is causing this?

Options:

A.

debug

B.

lsof

C.

nessus

D.

strace

E.

traceroute

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Questions 8

What word is missing from the following SQL statement?

__________ count(*) from tablename;

(Please specify the missing word using lower-case letters only.)

Options:

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Questions 9

Which directory holds the files that configure the xinetd service when using several configuration files instead of an integrated configuration file? (Specify the full path to the directory.)

Options:

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Questions 10

Which of the following are syslog facilities? (Choose TWO correct answers.)

Options:

A.

local7

B.

mail

C.

advanced

D.

postmaster

E.

remote

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Questions 11

With X11 forwarding in ssh, what environment variable is automatically set in the remote host shell that is not set when X11 forwarding is not enabled? (Specify only the environment variable without any additional commands or values.)

Options:

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Questions 12

Which of the following find commands will print out a list of files owned by root and with the SUID bit set in /usr?

Options:

A.

find /usr -uid 0 -perm +4000

B.

find -user root +mode +s /usr

C.

find -type suid -username root -d /usr

D.

find /usr -ls \*s\* -u root

E.

find /usr -suid -perm +4000

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Questions 13

Which of the following IPv4 networks are reserved by IANA for private address assignment and private routing? (Choose THREE correct answers.)

Options:

A.

127.0.0.0/8

B.

10.0.0.0/8

C.

169.255.0.0/16

D.

172.16.0.0/12

E.

192.168.0.0/16

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Questions 14

Which of the following information is stored within the BIOS? (Choose TWO correct answers.)

Options:

A.

Boot device order

B.

Linux kernel version

C.

Timezone

D.

Hardware configuration

E.

The system's hostname

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Questions 15

Which commands can be used to change a user's account aging information? (Choose THREE correct answers.)

Options:

A.

usermod

B.

passwd

C.

chattr

D.

chage

E.

chsh

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Questions 16

Which of the following programs can be used to determine the routing path to a given destination?

Options:

A.

dig

B.

netstat

C.

ping

D.

route

E.

traceroute

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Questions 17

Which command displays a list of allbackground tasks running in the current shell? (Specify ONLY the command without any path or parameters.)

Options:

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Questions 18

Which of the following are init systems used within Linux systems? (Choose THREE correct answers.)

Options:

A.

startd

B.

systemd

C.

Upstart

D.

SysInit

E.

SysV init

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Questions 19

What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)

Options:

A.

The user bob is removed from the system's user database.

B.

The user bob's home directory is removed.

C.

The locate database is updated to drop files owned by bob.

D.

All files owned by bob are remove from all mounted filesystems.

E.

In case bob was the last member of a group, that group is deleted.

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Questions 20

Which of the following statements is valid in the file /etc/nsswitch.conf?

Options:

A.

multi on

B.

192.168.168.4 dns-server

C.

hosts: files dns

D.

include /etc/nsswitch.d/

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Questions 21

Which of the following commands can be used to display the inode number of a given file?

Options:

A.

inode

B.

ls

C.

ln

D.

cp

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Questions 22

Which of the following parameters are used for journalctl to limit the time frame of the output? (Choose TWO correct answers.)

Options:

A.

--from=

B.

--since=

C.

--until=

D.

--upto=

E.

--date=

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Questions 23

What is the purpose of a screen reader?

Options:

A.

It reads text displayed on the screen to blind or visually impaired people.

B.

It reads the parameters of the attached monitors and creates an appropriate X11 configuration.

C.

It displays lines and markers to help people use speed reading techniques.

D.

It manages and displays files that contain e-books.

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Questions 24

Which of the following commands lists all currently installedpackages when using RPM package management?

Options:

A.

yum --query --all

B.

yum --list --installed

C.

rpm --query --all

D.

rpm --list –installed

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Questions 25

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

Options:

A.

uptime

B.

up

C.

top

D.

uname -u

E.

time –up

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Questions 26

What command displays all aliases defined in the current shell? (Specify the command without any path information)

Options:

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Questions 27

Which command, available with all MTAs, is used to list the contents of the MTA's mail queue? (Specify ONLY the command without any path or parameters.)

Options:

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Questions 28

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?

Options:

A.

test1 test2

B.

test2 test1

C.

script.sh test2

D.

script.sh test1

E.

test1 script.sh

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Questions 29

Which file inside the CUPS configuration directory contains the definition of the printers?

Options:

A.

cups-devices.conf

B.

snmp.conf

C.

printcap.conf

D.

printers.conf

E.

cupsd.conf

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Questions 30

Which function key is used to start Safe Mode in Windows NT?

Options:

A.

F10

B.

F8

C.

F6

D.

Windows NT does not support Safe Mode

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Questions 31

Which of the following lines are valid in the file /etc/hosts? (Choose TWO correct answers.)

Options:

A.

2001:db8::15 www.example.com www

B.

www.example.com www 203.0.13.15

C.

203.0.113.15 www.example.com www

D.

www.example.com,www 203.0.13.15,2001:db8::15

E.

2003.0.113.15,2001:db8::15 www.example.com www

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Questions 32

What output will the command seq 10 produce?

Options:

A.

A continuous stream of numbers increasing in increments of 10 until stopped.

B.

The numbers 1 through 10 with one number per line.

C.

The numbers 0 through 9 with one number per line.

D.

The number 10 to standard output.

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Questions 33

What is the command to delete the default gateway from the system IP routing table? (Choose TWO correct answers.)

Options:

A.

route del default

B.

ifconfig unset default

C.

netstat -r default

D.

ip route del default

E.

sysctl ipv4.default_gw=0

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Questions 34

Which of the following commands will output all of the lines with the name Fred in upper or lower case but not the word red from the file data_file?(Choose two)

Options:

A.

grep -v fred data_file

B.

grep '[f]red' data_file

C.

egrep fred data_file

D.

grep '[Ff]red' data_file

E.

grep -i fred data_file

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Questions 35

What is the name of the main configuration file for GNU GRUB? (Specify the file name only without any path.)

Options:

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Questions 36

Which option to the yum command will update the entiresystem? (Specify ONLY the option name without any additional parameters.)

Options:

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Questions 37

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.)

Options:

A.

ext3

B.

JFS

C.

ext2

D.

XFS

E.

procfs

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Questions 38

Which command will display messages from the kernel that were output during the normal boot sequence?

Options:

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Questions 39

Which file specifies the user accounts that can NOT submit jobs via at or batch? (Provide the full path and filename)

Options:

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Exam Code: LFCS
Exam Name: Linux Foundation Certified System Administrator
Last Update: Apr 30, 2024
Questions: 260

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