cPanel Questions and Answers

1) What is the full path to the directory that contains YUM repositories on a cPanel & WHM system?

Ans : /etc/yum.repos.d

2) The most popular, officially recommended update tier to use.

Ans : STABLE

3) Script you can use to install PostgreSQL on a cPanel & WHM server?

Ans : /scripts/installpostgres

4) What does the command ‘hwclock –hctosys’ do?

Ans:  Set the System Time from the Hardware Clock.

5) What service uses the mods installed in /opt?

Ans:  Apace/PHP

6) Which of the following directories contains the cPanel & WHM installation log?

Ans: /var/log

7) The makecpphp script is no longer supported. PHP pages served through cPanel and WHM interfaces will always use the PHP located in the /usr/local/cpanel/3rdparty/bin directory. If you want to customize the PHP that cPanel uses, you should customize the cpanel-php53 RPM.

Ans: /scripts/makecpphp 11.36

8) Describe the process of enabling IonCube for cPanel’s internal PHP on a server running cPanel 11.36+

Ans: /scripts/phpextensionmanager install IonCubeLoader

9) If you wanted to query DNS for the DKIM record for the domain “example.com”, what command would you use?Please enter your query here…

Ans: dig default._domainkey.example.com TXT

10) If you wanted to query DNS for the SPF record for the domain “example.com”, what command would you use?Please enter your query here…

Ans: dig example.com TXT

11) What service does /usr/local/cpanel/bin/splitlogs change logging for?

Ans: Apache

12) What is the name of the development tool we provide to allow you to interact with cPanel & WHM through your code?

Ans: cPanel API

13) What does the command ‘hwclock –hctosys’ do?

Ans: Sets the system time from the hardware clock

14) If cPanel & WHM was showing a blank page or an error, what is the full path to the log file you should check first?

Ans: /usr/local/apache/logs/error_log

15) In cPanel 11.36+, /scripts/makecpphp has been removed. If you wanted to customize the internal php that cPanel uses, what do you need to customize?

Ans: cpanel-php53

16) What are 3 of the log level types for Tomcat’s mod_jk?

Ans:

debug
info
erro

17) What does ‘/usr/local/cpanel/scripts/perlmods -l’ do?

Ans: show the list

18) What is the file that handles PostgreSQL’s configuration settings on a cPanel & WHM server?

Ans: /var/lib/pgsql/data/postgresql.conf

19) If you wanted to query DNS for the SPF record for the domain “example.com”, what command would you use?

Ans: dig example.com TXT

20) If you wanted to trace and/or kill a running process from WHM, which feature should you use?

Ans: Process Manager

21) Describe the process of enabling IonCube for cPanel’s internal PHP on a server running cPanel 11.36+

Ans:/scripts/phpextensionmanager install IonCubeLoader

22) If you wanted to query DNS for the DKIM record for the domain “example.com”, what command would you use?Please enter your query here…

Ans:dig default._domainkey.example.com TXT

23) If the system log shows repeated connections to TCP port 143, which service is being accessed?

Ans:IMAP

24) On which port does Tomcat listen by default?

Ans:8080

25) In which primary programming language is cPanel & WHM developed?

Ans: perl

26) In what directory are custom DNS Zone Templates stored?

Ans: /var/cpanel/zonetemplates

27) What does the ‘ipcs -s’ command do?

Ans: Shows semaphores

28) In what log file would you find account creation/termination information?

Ans: /var/cpanel/accounting.log

29) What is the name of the script that you should use to update cPanel & WHM licenses?

Ans: /usr/local/cpanel/cpkeyclt

30) cPanel & WHM interfaces require Apache to be installed and working.

Ans: True

31) Which directory contains cPanel & WHM’s error_log file?

Ans: /usr/local/cpanel/logs

32) It is necessary to obtain a license before installing cPanel & WHM?

Ans: False

33) Where does Tomcat store its log files on a cPanel & WHM server?

Ans: /usr/local/jakarta/tomcat/logs

34) What is the name of the script you should use whenever you encounter a “License File Expired” message?

Ans: /usr/local/cpanel/cpkeyclt

35) What file permissions would /usr/bin/gcc have upon disabling WHM’s Compiler Access?

Ans: 750

36) Which of the following files is Pure-FTP’s error log?

Ans: /var/log/messages

37) What port is used to securely log into webmail? Please only include the port number in your answer.

Ans: 2096

38) When compiler access is enabled (default), the permissions for /usr/bin/gcc are:

Ans: -rwxr-xr-x means 355

39) When you disable compiler access, cPanel changes the permissions for /usr/bin/gcc:

Ans: -rwxr-x— means 364

40) What are the four public tiers of cPanel & WHM called?

Ans: CURRENT,RELEASE,EDGE,STABLE

42) Which file does Tweak Settings save its settings?

Ans: /var/cpanel/cpanel.config

43) Which of the following commands will output how many emails are in the system’s Exim queue?

Ans: exim -bpc

44) Which of the following commands will rebuild the RPM database?

Ans: rpm –rebuilddb

45) If your CentOS server was not able to resolve a domain (cpanel.net for example),what file would you check and/or add nameservers to help resolve domains?

Ans: /etc/resolv.conf

46) What is the full path to the hidden file containing the MySQL root password?

Ans: /root/.my.cnf

47) What is the directory /home/virtfs used for?

Ans: Jailshell

48) Which of the following scripts modify images in cPanel & WHM?

Ans: /usr/local/cpanel/bin/rebuild_sprites

49) Which of the following directories contains EasyApache’s log files?

Ans: /usr/local/cpanel/logs/easy/apache

cPanel Interview Question and Answer

50) If the system log shows repeated connections to TCP port 143, which service is being accessed?

Ans: IMAP

51) What is the default secure port for POP3? (Enter a numeric value.)
Ans: 995

52) What is the secure port for IMAP? (Enter a numeric value.)
Ans: 993

53) Where is the Exim Mail Queue located?
Ans: /var/spool/exim/input

54) RNDC
Ans: 953

55) Which of these ports does WHM utilize?

Ans: 2086/2087

55)Which of the following files is Pure-FTP’s error log?

Ans: /var/log/messages

56) What does the strace utility do?

Ans: Traces system calls

57) What is the full path to the script you should run after editing a user file in /var/cpanel/users?

Ans: /usr/local/cpanel/scripts/updateuserdomains

58) Which of the following scripts would you use to create a new cPanel account ?

Ans: /scripts/createacct

59) Which of the following scripts would you use to create a new cPanel account from the command line?

Ans: /usr/local/cpanel/scripts/createacct

60) True or False: cPanel & WHM require Perl to work.

Ans: False

61) What is the secure port for SMTP? (Enter a numeric value.)

Ans: 465

62) Which of the following is the primary daemon responsible for managing antirelayd, eximstats, cpbandwd and chkservd?

Ans: tailwatchd

63) Which is the script used to update Apache & PHP?

Ans: /scripts/easyapache

64) Which of the following commands can you use to securely transfer files between 2 servers.

Ans: scp

65) What script would you use to manually add an email account from command line?

Ans: /scripts/addpop

66) Select all of the webmail clients that are included with cPanel.

Ans:
Roundcube
SquirrelMail
Horde

67) Select the most popular, officially recommended update tier to use.

Ans: Release

68) True or False: You can use SFTP for any FTP account created?

Ans: False

69) True or False: All FTP passwords are stored in /etc/proftpd/

Ans: True

70) Which of the following commands (on a RedHat or CentOS system) will display information about how memory is being used by the server?

Ans: cat /proc/meminfo, free

71) True or False: cPanel & WHM requires SELinux to work.

Ans: False

72) What WHM feature allows you the ability to reconfigure and compile Apache and PHP?

Ans: EasyApache

73) Which of the following commands will allow you to look through text, one page at a time?

Ans: less

74) What is the file that handles PostgreSQL’s configuration settings on a cPanel & WHM server?

Ans: /var/lib/pgsql/data/postgresql.conf

75) Which directory contains cPanel & WHM’s error_log file?    Blank page error

Ans: /usr/local/cpanel/logs/error_log

76) Which two FTP servers are available in cPanel & WHM?

Ans: Proftp and pure ftp

77) Which of the following commands will remove or uninstall an RPM?

Ans: rpm –e

78) True or False: Running ‘/usr/local/apache/bin/apachectl -l’ from command line as root will list modules compiled in Apache.

Ans: true

79) How would you force cPanel & WHM to update when using the command line interface? Include the full path in your answer.

Ans:/scripts/upcp –-force

80) What is the default port for SSH? (Enter a numeric port.)

Ans: 22

81) In what directory are account Email forwarders stored or saved?

Ans: /etc/vdomainaliases

82) What port is used to securely log into webmail?  Please only include the port ?

Ans:2096

83) In what directory are DNS Zone .db files stored by default?

Ans: /var/named/

84) What cpanel version is running?

Ans: cat /usr/local/cpanel/version

85) Which of the following files is MySQL ‘s Startup error log?

Ans: /var/lib/mysql/hostname.err

86)What is the name of the only supported theme in cPanel?

Ans:x3

87) Which of the following directories contains PostgreSQL data?

Ans: /var/lib/pgsql

88) Where is the Exim configuration file located?

Ans: /etc/exim.conf

89) Which log file stores cPanel & WHM license updates?

Ans:/usr/local/cpanel/logs/license_log

90) What resources are available to pass cPanel Univeristy exams?

Ans:Daily use of Linux and cPanel, docs.cpanel.net

91) What anti-virus software is available for cPanel &WHM?

Ans: ClamAV

92) How would you determine what version of Exim is currently installed?

Ans: exim -bV

93) What is YUM?

Ans:A package manager for Linux

94) Which of the following email applications are not available in Webmail? (Check all that apply.)

Ans:
Smartmail
Gmail

95) Which of the following commands will allow you to look through text, one page at a time?

Ans:less

96) /scripts/installimagemagick has been removed as of 11.36. What command can be used to install the ImageMagick PHP extension?

Ans:
If you require PHP bindings with Apache
/usr/local/bin/pecl install imagick

If you wish to use ImageMagick with Apache,
yum -y install ImageMagick-devel ImageMagick-c++-devel

97) On what default secure port does Apache listen for a connection? (Enter a numeric value.)

Ans: 443

98) In what directory are MySQL databases created and stored?

Ans: /var/lib/mysql

99) On which default port does MySQL listen for a connection?

Ans: 3306

100) For which of the following is mod_mono used?

Ans: Apache ASP.NET Support

101)Which command should you use to make a file immutable?  Do not include the full path in your answer.

Ans : chattr +i file

102) What file is used to prevent updates to certain files by cPanel?

Ans : /etc/cpupdate.conf

103) If you wanted to change the shared main IP on your cPanel & WHM machine, what area of WHM would you use to change the IP for all sites and sections?
Ans : Basic cPanel & WHM Setup

 

 

Commonly Used Port Numbers

This is a list of commonly used ports, and does not include all possible ports that may be opened on a server.
CPANEL
cPanel     2082
cPanel – SSL     2083
WHM     2086
WHM – SSL     2087
Webmail     2095
Webmail – SSL     2096
E-MAIL
POP3     110
POP3 – SSL     995
IMAP     143
IMAP – SSL     993
SMTP     25
SMTP Alternate     26
SMTP Alternate     587
SMTP – SSL     465
WEB
HTTP     80
SSL     443
FTP     21
FTPs     990
SFTP     22
SFTP Shared/Reseller Servers     2222
Webdisk     2077
Webdisk – SSL     2078
MySQL     3306
MSSQL     1433
SSH     22
SSH Shared/Reseller Servers     2222