Question 1

Which of the following keywords can be used in the file /etc/resolv.conf? (Choose TWO correct choices.)

Accepted Answer

A)  substitute 
B)  nameserver 
C)  search 
D)  lookup 
E)  method

Question 2

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

Accepted Answer

The answer of Which command displays a list of all...

Question 3

Which of the following commands makes /bin/foo executable by everyone but writable only by its owner?

Accepted Answer

A)  chmod u=rwx,go=rx /bin/foo 
B)  chmod o+rwx,a+rx /bin/foo 
C)  chmod 577 /bin/foo 
D)  chmod 775 /bin/foo

Question 4

Which shell command is used to continue background execution of a suspended command?

Accepted Answer

A)  & 
B)  bg 
C)  cont 
D)  exec 
E)  :&

Question 5

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

Accepted Answer

The answer of Which command is used in a Linux...

Question 6

Which of the following is a valid IPv6 address?

Accepted Answer

A)  2001:db8:3241::1 
B)  2001::db8:4581::1 
C)  2001:db8:0g41::1 
D)  2001%db8%9990%%1 
E)  2001.db8.819f..1

Question 7

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

Accepted Answer

A)  ; 
B)  * 
C)  # 
D)  /

Question 8

Which of the following words is used to restrict the records that are returned from a SELECT SQL query based on a supplied criteria for the values in the records?

Accepted Answer

A)  CASE 
B)  FROM 
C)  WHERE 
D)  IF

Question 9

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

Accepted Answer

A)  Run the command chsh -s /bin/false with the user name. 
B)  Set the UID for the user to 0. 
C)  Remove the user from the group staff. 
D)  Add the user to /etc/noaccess. 
E)  Create a .nologin file in the user's home directory.

Question 10

Which file in the /proc filesystem lists parameters passed from the bootloader to the kernel? (Specify the file name only without any path.)

Accepted Answer

The answer of Which file in the /proc filesystem lists...

Question 11

Which grep command will print only the lines that do not end with a / in the file foo?

Accepted Answer

A)  grep '/$' foo 
B)  grep '/#' foo 
C)  grep -v '/$' foo 
D)  grep -v '/#' foo

Question 12

What is the purpose of the Bash built-in export command?

Accepted Answer

A)  It allows disks to be mounted remotely. 
B)  It runs a command as a process in a subshell. 
C)  It makes the command history available to subshells. 
D)  It sets up environment variables for applications. 
E)  It shares NFS partitions for use by other systems on the network.

Question 13

What is true regarding the command sendmail?

Accepted Answer

A)  With any MTA, the sendmail command must be run periodically by the cron daemon. 
B)  All MTAs, including Postfix and Exim, provide a sendmail command. 
C)  The sendmail command prints the MTAs queue history of which mails have been sent successfully. 
D)  It is only available when the sendmail MTA is installed.

Question 14

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

Accepted Answer

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

Question 15

What is the purpose of a screen reader?

Accepted Answer

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.

Question 16

Which of the following commands preloads and manages keys that are used for automatic authentication while logging in to other machines using SSH?

Accepted Answer

A)  sshd 
B)  ssh-agent 
C)  ssh-keygen 
D)  ssh-add

Question 17

After successfully creating a hard link called bar to the ordinary file foo, foo is deleted from the filesystem. Which of the following describes the resulting situation?

Accepted Answer

A)  foo and bar would both be removed. 
B)  foo would be removed while bar would remain accessible. 
C)  foo would be removed. bar would still exist but would be unusable. 
D)  Both foo and bar would remain accessible. 
E)  The user is prompted whether bar should be removed, too.

Question 18

Which of the following file permissions belong to a symbolic link?

Accepted Answer

A)  -rwxrwxrwx 
B)  +rwxrwxrwx 
C)  lrwxrwxrwx 
D)  srwxrwxrwx

Question 19

Which of the following options is used in a GRUB Legacy configuration file to define the amount of time that the GRUB menu will be shown to the user?

Accepted Answer

A)  hidemenu 
B)  splash 
C)  timeout 
D)  showmenu

Question 20

In which directory must definition files be placed to add additional repositories to yum?

Accepted Answer

The answer of In which directory must definition files be...

Exam 1: Linux Foundation Certified System Administrator