CompTIA Linux+ (XK0-004) Practice Exam #2

Question 1 of 50

1. Question

What protocol should you use to mount folders from remote Linux servers on your local Linux server?

SNMP
NTP
DHCP
NFS

Question 2 of 50

2. Question

A long-time server administrator has left the company, and now you are in charge of her
system. Her old user account directory tree, /home/Zoe/, has been backed up. Which
command is the best one to use to quickly remove her files?

cp -R /home/Zoe/ /dev/null/
mv -R /home/zoe/ /dev/null/
rm -Rf /home/Zoe/
rm -ri /home/Zoe/
rm -rI /home/Zoe

Question 3 of 50

3. Question

The cat -E MyFile.txt command is entered, and at the end of every line displayed is a $.
What does this indicate?

The text file has been corrupted somehow.
The text file records end in the ASCII character NUL.
The text file records end in the ASCII character LF
The text file records end in the ASCII character $.
The text file records contain a $ at their end.

Question 4 of 50

4. Question

The software package allows your Windows workstations to mount a folder
stored on a Linux server

ntpd
Samba
DHCPd
Evolution

Question 5 of 50

5. Question

There is a large directory structure that needs to be renamed. What mv command options
should you consider employing? (Choose all that apply.)

-f
-i
-n
-r
-v

Question 6 of 50

6. Question

The cut utility often needs delimiters to process text records. Which of the following best describes a delimiter?

cut
sort
vim
nano
sed

Question 7 of 50

7. Question

What type of cloud service provides the full application environment so that everyone on the Internet can run it?

PaaS
Private
Public
SaaS
Hybrid

Question 8 of 50

8. Question

Which two software packages are used in Linux to maintain log files? (Choose two.)

rsyslogd
journald
ntpd
DHCPd

Question 9 of 50

9. Question

You are trying to decide whether to use a hard link or a symbolic link for a data file. The
file is 5GB, has mission-critical data, and is accessed via the command line by three other
people. What should you do?

Create a hard link so the file can reside on a different filesystem for data protection.
Create three hard links and provide the links to the three other people for data protection.
Create three symbolic links and protect the links from the three other people for data protection.
Create a symbolic link so the file can reside on a different filesystem
Create a symbolic link so the links can share an inode number.

Question 10 of 50

10. Question

You have a text file, monitor.txt, which contains information concerning the monitors
used within the data center. Each record ends with the ASCII LF character and fields are
delimitated by a comma (,). A text record has the monitor ID, manufacture, serial number,
and location. To display each data center monitor’s monitor ID, serial number, and location, use which cut command?

cut -d “,” -f 1,3,4 monitor.txt
cut -d “,” -f 1,3,4 monitor.txt
cut -f “,” -d 1,3,4 monitor.txt
. cut monitor.txt -d “,” -f 1,3,4
cut monitor.txt -f “,” -d 1,3,4

Question 11 of 50

11. Question

What type of hypervisor is the Oracle VirtualBox application?

PaaS
SaaS
Type II
Type I
Private

Question 12 of 50

12. Question

Which software program should you load on your Linux server to synchronize its time with
a standard time server?

DHCPd
BIND
ntpd
Samba

Question 13 of 50

13. Question

A short text-based control file is no longer working properly with the program that reads
it. You suspect the file was accidentally corrupted by a control code update you performed
recently, even though the file’s control codes are all correct. Which command should you
use next on the file in your problem investigation?

cat -v
cat -z
cat -n
cat -s
cat -E

Question 14 of 50

14. Question

The grep utility can employ regular expressions in its PATTERN. Which of the following best describes a regular expression?

A series of characters you define for a utility, which uses the characters to match the same characters in text files
ASCII characters, such as LF and NUL, that a utility uses to filter text
Wildcard characters, such as * and ?, that a utility uses to filter text
A pattern template you define for a utility, which uses the pattern to filter text
Quotation marks (single or double) used around characters to prevent unexpected results

Question 15 of 50

15. Question

What file should you place console and terminal file names into to prevent users from logging into the Linux system as the root user account from those locations?

/etc/cron.deny
/etc/hosts.deny
/etc/securetty
/etc/login.warn
/etc/motd

Question 16 of 50

16. Question

What software package allows a Linux server to print to a network printer?

DHCPd
BIND
ntpd

Question 17 of 50

17. Question

You have two short text files that have maximum record lengths of 15 characters. You want
to review these files side by side. Which of the following commands would be the best to use?

pr -m
pr -tl 20
cat
pr -mtl 20
pr -ml 20

Question 18 of 50

18. Question

What Linux program logs user file and directory access?

chroot
LUKS
auditd
klist
kinit

Question 19 of 50

19. Question

If you see the named program running in background on your Linux server, what service
does it provide?

Network time
Hostname resolution
Dynamic IP address allocation
Printing

Question 20 of 50

20. Question

You have a lengthy file named, FileA.txt. What will the head -15 FileA.txt command
do?

Display all but the last 15 lines of the file.
Display all but the first 15 lines of the file.
Display the first 15 lines of the file.
Display the last 15 lines of the file.
Generate an error message.

Question 21 of 50

21. Question

You’ve moved your present working directory to a new location in the Linux virtual directory structure and need to go back to the previous directory, where you were just located. Which command should you employ?

cd
exit
cd ~
cd –
return

Question 22 of 50

22. Question

Which authentication package used to be called by the name “Yellow Pages”?

Samba
Kerberos
NIS
BIND

Question 23 of 50

23. Question

You have issued the command grep Hal on a text file you generated using information
from a failed login attempts file. It returns nothing, but you just performed a test case, by
purposely failing to log into the Hal account, prior to generating the text file. Which of the
following is the best choice as your next step?

Employ the tail command to peruse the text file.
Employ the cat command to view the text file
Delete the text file and regenerated it using information from the failed login attempts file
Issue the grep -d skip Hal command on the text file.
Issue the grep -i Hal command on the text file

Question 24 of 50

24. Question

To copy a directory with the cp command, which option do you need to use?

-i
-R
-v
-u
-f

Question 25 of 50

25. Question

What package do you need to install to allow your Linux server to provide IP addresses to
clients on your local network?

DHCPd
BIND
ntpd
Evolution

Question 26 of 50

26. Question

You are trying to peruse a rather large text file. A coworker suggests you use a pager.
Which of the following best describes what your coworker is recommending?

Use a utility that allows you to view the first few lines of the file
Use a utility that allows you to view one text page at time.
Use a utility that allows you to search through the file.
Use a utility that allows you to filter out text in the file.
Use a utility that allows you to view the last few lines of the file.

Question 27 of 50

27. Question

Which web server is used in the popular LAMP stack?

nginX
Apache
Lighthttpd
PostgreSQL

Question 28 of 50

28. Question

The package allows you to create a secure tunnel across a private network to access your local network remotely.

BIND
ntpd
OpenSSH
OpenSSL

Question 29 of 50

29. Question

Which of the following does not describe the less utility?

It does not read the entire file prior to displaying the file’s first page.
You can use the up and down arrow keys to move through the file.
You press the spacebar to move forward a page.
You can use the Esc+V key combination to move backward a page.
You can press the X key to exit from the utility.

Question 30 of 50

30. Question

A runs in background and listens for client connection requests for a single application.

Daemon
Super-server
Shell
Graphical desktop

Question 31 of 50

31. Question

What server role should you implement to block your local network clients from accessing
sports websites during business hours?

A DHCP server
A web server
A web proxy
A container

Question 32 of 50

32. Question

Which diff option is the best option to allow you to quickly determine if two text files are different from one another?

-e
-q
-s
-W
-y

Question 33 of 50

33. Question

Which open-source database provided fast performance and became a popular choice for
web applications?

MongoDB
PostgreSQL
MySQL
NoSQL

Question 34 of 50

34. Question

What server role should you implement to increase performance on your company’s website?

A load balancer
A web proxy
A DHCP server
A container

Question 35 of 50

35. Question

You are working on a Linux server at the command line, and you try to issue a diff command and receive a response stating that the command was not found. What is the next
best step to take in order to start the troubleshooting process?

Hit your up arrow key and press Enter.
Log out, log back in, and retry the command.
Enter the which diff command.
Enter the whereis diff command.
Reboot the server and retry the command.

Question 36 of 50

36. Question

How does a server know what client request is sent to which application daemon?

IP addresses
Ports
Ethernet addresses
Services

Question 37 of 50

37. Question

A allows your developers to easily deploy applications between development, test,
and production.

A web proxy
A DHCP server
A container
A cluster

Question 38 of 50

38. Question

You are trying to find a file on your Linux server whose name is conf. Employing the
locate conf command for your search shows many directories that contain the letters
conf. What is the best description for why this is happening?

The locate utility searches for only for directory names
You did not employ the -d skip switch.
It is most likely because the locate database is corrupted.
You did not employ the appropriate regular expression.
It is due to file globbing on the pattern name.

Question 39 of 50

39. Question

What popular open source web server can also perform as a load balancer?

nginX
Apache
PostgreSQL
Lighthttpd

Question 40 of 50

40. Question

You are looking at a directory that you have not viewed in a long time and need to determine which files are actually directories. Which command is the best one to use?

mkdir -v
ls
ls -F
ls -i
ll

Question 41 of 50

41. Question

You downloaded a large important file, fortytwo.db, from your company’s local website
to your Linux server but got interrupted by an emergency. Now you cannot remember
where you stored the file. What is the best first step to fixing this problem?

Issue the sudo updatedb command.
Issue the locate -b fortytwo.db command.
Issue the locate -b ‘fortytwo.db’ command.
Download the file from the company’s local website again.
Issue the locate fortytwo.db command.

Question 42 of 50

42. Question

What format does MongoDB use to store data elements in the database?

Relational
YaML
JSON
Encrypted

Question 43 of 50

43. Question

You are using the ls command to look at a directory file’s metadata but keep seeing metadata for the files within it instead. What command option will rectify this situation?

-a
-d
-F
-l
-R

Question 44 of 50

44. Question

You want to search for a particular file, main.conf, using the find utility. This file most
likely is located somewhere in the /etc/ directory tree. Which of the following commands
is the best one to use in this situation?

find -r /etc -name main.conf
find / -name main.conf
find /etc -maxdepth -name main.conf
find /etc -name main.conf
find main.conf /etc

Question 45 of 50

45. Question

Which part of the Linux mail process is responsible for sending emails to remote hosts?

MUA
MTA
MDA
Evolution

Question 46 of 50

46. Question

You have just created an empty directory called MyDir. Which command most likely did you use?

mkdir -v MyDir
touch MyDir
cp -R TheDir MyDir
mv -r TheDir MyDir
rmdir MyDir

Question 47 of 50

47. Question

Yesterday a coworker, Michael, was fired for nefarious behavior. His account and home directory were immediately deleted. You need to audit the server to see if he left any files out in the virtual directory system. Which of the following commands is the best one to use in this situation?

find / -name Michael
find / -user Michael
find / -mmin 1440
find ∼ -user Michael
find / -nouser

Question 48 of 50

48. Question

Which part of the Linux mail process allows you to create filters to automatically redirect
incoming mail messages?

MUA
MTA
MDA
Evolution

Question 49 of 50

49. Question

You have a file that is over 10GB in size, and it needs to be backed up to a locally attached
drive. What is the best utility to use in this situation?

readlink -f
mv
cp
scp
rsync

Question 50 of 50

50. Question

You need to figure out what configuration file(s) hold a host name directive. Which of the
following commands is the best one to use?

which
whereis
grep
locate
find

Anastasia-Instructor September 4, 2022

Quiz Summary

Information

Results