Question 1

What happens after issuing the command vi without any additional parameters?

Accepted Answer

A)  vi starts and loads the last file used and moves the cursor to the position where vi was when it last exited. 
B)  vi starts and requires the user to explicitly either create a new or load an existing file. 
C)  vi exits with an error message as it cannot be invoked without a file name to operate on. 
D)  vi starts in command mode and opens a new empty file. 
E)  vi starts and opens a new file which is filled with the content of the vi buffer if the buffer contains text.

Question 2

Creating a hard link to an ordinary file returns an error. What could be the reason for this?

Accepted Answer

A)  The source file is hidden. 
B)  The source file is read-only. 
C)  The source file is a shell script. 
D)  The source file is already a hard link. 
E)  The source and the target are on different filesystems.

Question 3

What do the permissions -rwSr-xr-x mean for a binary file when it is executed as a command?

Accepted Answer

A)  The command is SetUID and it will be executed with the effective rights of the owner. 
B)  The command will be executed with the effective rights of the group instead of the owner. 
C)  The execute flag is not set for the owner. Therefore the SetUID flag is ignored. 
D)  The command will be executed with the effective rights of the owner and group.

Question 4

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

Accepted Answer

A)  yum --query --all 
B)  yum --list --installed 
C)  rpm --query --all 
D)  rpm --list -installed

Question 5

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

Accepted Answer

The answer of Which option to the yum command will...

Question 6

When the command echo $ outputs 1, which of the following statements is true?

Accepted Answer

A)  It is the process ID of the echo command. 
B)  It is the process ID of the current shell. 
C)  It is the exit value of the command executed immediately before echo. 
D)  It is the exit value of the echo command.

Question 7

Which of the following commands should be added to /etc/bash_profile in order to change the language of messages for an internationalized program to Portuguese (pt)?

Accepted Answer

A)  export LANGUAGE="pt" 
B)  export MESSAGE="pt" 
C)  export UI_MESSAGES="pt" 
D)  export LC_MESSAGES="pt" 
E)  export ALL_MESSAGES="pt"

Question 8

What is the first program that is usually started, at boot time, by the Linux kernel when using SysV init?

Accepted Answer

A)  /lib/init.so 
B)  /sbin/init 
C)  /etc/rc.d/rcinit 
D)  /proc/sys/kernel/init 
E)  /boot/init

Question 9

Which of the following commands redirects the output of cmd to the file foo.txt, in which an existing file is overwritten?

Accepted Answer

A)  cmd || foo.txt 
B)  cmd | foo.txt 
C)  cmd && foo.txt 
D)  cmd >> foo.txt 
E)  cmd > foo.txt

Question 10

What is the purpose of the nsswitch.conf file?

Accepted Answer

A)  It is used to configure where the C library looks for system information such as host names and user passwords. 
B)  It is used to configure network protocol port numbers such as for HTTP or SMTP. 
C)  It is used to configure LDAP authentication services for the local system. 
D)  It is used to configure which network services will be turned on during the next system boot.

Question 11

When the command echo $$ outputs 12942, what is the meaning of 12942?

Accepted Answer

A)  It is the process ID of the echo command. 
B)  It is the process ID of the current shell. 
C)  It is the process ID of the last command executed. 
D)  It is the process ID of the last command which has been placed in the background.

Question 12

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

Accepted Answer

A)  dirname 
B)  which 
C)  basename 
D)  query 
E)  whereis

Question 13

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

Accepted Answer

A)  F10 
B)  F8 
C)  F6 
D)  Windows NT does not support Safe Mode

Question 14

What of the following statements are true regarding /dev/ when using udev? (Choose TWO correct choices.)

Accepted Answer

A)  Entries for all possible devices get created on boot even if those devices are not connected. 
B)  Additional rules for udev can be created by adding them to /etc/udev/rules.d/. 
C)  When using udev, it is not possible to create block or character devices in /dev/ using mknod. 
D)  The /dev/ directory is a filesystem of type tmpfs and is mounted by udev during system startup. 
E)  The content of /dev/ is stored in /etc/udev/dev and is restored during system startup.

Question 15

Which of the following is observed and corrected by a NTP client?

Accepted Answer

A)  The skew in time between the system clock and the hardware clock. 
B)  The skew in time between the system clock and the reference clock. 
C)  Changes in the time zone of the current computer's location. 
D)  Adjustments needed to support Daylight Saving Time.

Question 16

When removing a package, which of the following dpkg options will completely remove the files including configuration files?

Accepted Answer

A)  --clean 
B)  --delete 
C)  --purge 
D)  -remove

Question 17

Which of the following commands can be used to display the local routing table? (Choose TWO correct choices.)

Accepted Answer

A)  ifconfig 
B)  dig 
C)  netstat 
D)  route 
E)  trackroute

Question 18

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

Accepted Answer

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

Question 19

What is the purpose of the command mailq?

Accepted Answer

A)  It fetches new emails from a remote server using POP3 or IMAP. 
B)  It is a multi-user mailing list manager. 
C)  It is a proprietary tool contained only in the qmail MTA. 
D)  It queries the mail queue of the local MTA. 
E)  It is a command-line based tool for reading and writing emails.

Question 20

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

Accepted Answer

A)  tr '\s' ' '  b.txt 
B)  tr -c ' '  b.txt 
C)  tr -d ' '  b.txt 
D)  tr -r ' ' '
'  b.txt 
E)  tr -s ' '  b.txt

Exam 1: Linux Foundation Certified System Administrator