Question 1

Which of the following commands brings a system running SysV init into a state in which it is safe to perform maintenance tasks? (Choose TWO correct choices.)

Accepted Answer

A)  shutdown -R 1 now 
B)  shutdown -single now 
C)  init 1 
D)  telinit 1 
E)  runlevel 1

Question 2

Which of the following commands replaces each occurrence of 'bob' in the file letter with 'Bob' and writes the result to the file newletter?

Accepted Answer

A)  sed '/bob/Bob' letter > newletter 
B)  sed s/bob/Bob/ letter  newletter 
D)  sed 's/bob/Bob/g' letter > newletter 
E)  sed 's/bob, Bob/' letter > newletter

Question 3

What is the default nice level when a process is started using the nice command?

Accepted Answer

A)  -10 
B)  10 
C)  20 
D)  0

Question 4

Which of the following commands reboots the system when using SysV init? (Choose TWO correct choices.)

Accepted Answer

A)  shutdown -r now 
B)  shutdown -r "rebooting" 
C)  telinit 6 
D)  telinit 0 
E)  shutdown -k now "rebooting"

Question 5

Which file used by XDM specifies the default wallpaper?

Accepted Answer

A)  /etc/X11/xdm/Xsetup 
B)  /etc/X11/xdm.conf 
C)  /etc/X11/xdm/Defaults 
D)  /etc/X11/defaults.conf

Question 6

What is the purpose of the file /etc/profile?

Accepted Answer

A)  It contains the welcome message that is displayed after login. 
B)  It contains security profiles defining which users are allowed to log in. 
C)  It contains environment variables that are set when a user logs in. 
D)  It contains default application profiles for users that run an application for the first time.

Question 7

When starting a program with the nice command without any additional parameters, which nice level is set for the resulting process?

Accepted Answer

A)  -10 
B)  0 
C)  10 
D)  20

Question 8

Which umask value will result in the default access permissions of 600 (rw-------) for files and 700 (rwx------) for directories? (Specify only the numerical umask value.)

Accepted Answer

The answer of Which umask value will result in the...

Question 9

Given a file called birthdays containing lines like:   YYYY-MM-DD Name   1983-06-02 Tim   1995-12-17 Sue Which command would you use to output the lines belonging to all people listed whose birthday is in May or June?

Accepted Answer

A)  grep '[56]' birthdays 
B)  grep 05?6? birthdays 
C)  grep '[0-9]*-0[56]-' birthdays 
D)  grep 06 birthdays | grep 05

Question 10

Which of the following commands can be used to download the RPM package kernel without installing it?

Accepted Answer

A)  yum download --no-install kernel 
B)  yumdownloader kernel 
C)  rpm --download --package kernel 
D)  rpmdownload kernel

Question 11

Which of the following commands will change the quota for a specific user?

Accepted Answer

A)  edquota 
B)  repquota 
C)  quota -e 
D)  quota

Question 12

Which Bash environment variable defines in which file the user history is stored when exiting a Bash process? (Specify ONLY the variable name.)

Accepted Answer

The answer of Which Bash environment variable defines in which...

Question 13

Which of the following commands moves and resumes in the background the last stopped shell job?

Accepted Answer

A)  run 
B)  bg 
C)  fg 
D)  back

Question 14

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

Accepted Answer

A)  multi on 
B)  192.168.168.4 dns-server 
C)  hosts: files dns 
D)  include /etc/nsswitch.d/

Question 15

Which of the following is a legacy program provided by CUPS for sending files to the printer queues on the command line?

Accepted Answer

A)  lpd 
B)  lpp 
C)  lpq 
D)  lpr

Question 16

For accessibility assistance, which of the following programs is an on-screen keyboard?

Accepted Answer

A)  xkb 
B)  atkb 
C)  GOK 
D)  xOSK

Question 17

In Bash, inserting 1>&2 after a command redirects

Accepted Answer

A)  standard error to standard input. 
B)  standard input to standard error. 
C)  standard output to standard error. 
D)  standard error to standard output. 
E)  standard output to standard input.

Question 18

How can the existing environment variable FOOBAR be suppressed for the execution of the script./myscript only?

Accepted Answer

A)  unset -v FOOBAR;./myscript 
B)  set -a FOOBAR="";./myscript 
C)  env -u FOOBAR./myscript 
D)  env -i FOOBAR./myscript

Question 19

Which signal is missing from the following command that is commonly used to instruct a daemon to reinitialize itself, including reading configuration files? killall -s _______ daemon

Accepted Answer

The answer of Which signal is missing from the following...

Question 20

Which of the following is true about IPv6?

Accepted Answer

A)  With IPv6, the TCP port numbers of most services have changed. 
B)  IPv6 no longer supports broadcast addresses. 
C)  IPv4 addresses can be used without any change with IPv6. 
D)  IPv6 no longer supports multicast addresses. 
E)  For IPv6, UDP and TCP have been replaced by the Rapid Transmission Protocol RTP.

Exam 1: Linux Foundation Certified System Administrator