LFCS Practice Exam Tests Latest Updated on Oct-2021 [Q41-Q58]

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LFCS Practice Exam Tests Latest Updated on Oct-2021

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NEW QUESTION 41
Which of the following keywords can be used in the file /etc/nsswitch.conf to specify a source for host name lookups? (Choose TWO correct answers.)

  • A. resolv
  • B. dns
  • C. remote
  • D. files
  • E. hosts

Answer: B,D

 

NEW QUESTION 42
CORRECT TEXT
Which option in the /etc/ntp.conf file specifies an external NTP source to be queried for time information? (Specify ONLY the option without any values or parameters.)

Answer:

Explanation:
server

 

NEW QUESTION 43
What is the maximum niceness value that a regular user can assign to a process with the nice command when executinga new process?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A

 

NEW QUESTION 44
In the vi editor, how can commands such as moving the cursor or copying lines into the buffer be issued multiple times or applied to multiple rows?

  • A. By selecting all affected lines using the shift and cursor keys before applying the command.
  • B. By specifying the number right in front of a command such as 4l or 2yj.
  • C. By using the command :repeat followed by the number and the command.
  • D. By issuing acommand such as :set repetition=4 which repeats every subsequent command 4 times.

Answer: B

 

NEW QUESTION 45
What is the command to delete the default gateway from the system IP routing table? (Choose TWO correct answers.)

  • A. netstat -r default
  • B. ifconfig unset default
  • C. ip route del default
  • D. sysctl ipv4.default_gw=0
  • E. route del default

Answer: C,E

 

NEW QUESTION 46
Which of the following shell redirections will write standard output and standard error output to a file named filename?

  • A. >filename 2>&1
  • B. >>filename
  • C. 1>&2>filename
  • D. 1&2>filename
  • E. 2>&1 >filename

Answer: A

 

NEW QUESTION 47
CORRECT TEXT
What word is missing from the following SQL statement?
insert into tablename ________(909, 'text');
(Please specify the missing word using lower-case letters only.)

Answer:

Explanation:
VALUES,
values

 

NEW QUESTION 48
After moving data to a new filesystem, how can the former path of the data be kept intact in order to avoid reconfiguration of existing applications? (Choose TWO correct answers.)

  • A. By creating a hard link from the old to the new path of the data.
  • B. By creating a symbolic link from the old to the new path of the data.
  • C. By creating an ACL redirection from the old to the new path of the data.
  • D. By mounting the new filesystem on the original path of the data.
  • E. By running the command touch on the old path.

Answer: B,D

 

NEW QUESTION 49
Which of the following command sequences overwrites the file foobar.txt?

  • A. echo "QUIDQUIDAGIS" < foobar.txt
  • B. echo "QUIDQUIDAGIS" >> foobar.txt
  • C. echo "QUIDQUIDAGIS" | foobar.txt
  • D. echo "QUIDQUIDAGIS" > foobar.txt

Answer: D

 

NEW QUESTION 50
CORRECT TEXT
Which command displays a list of allbackground tasks running in the current shell? (Specify ONLY the command without any path or parameters.)

Answer:

Explanation:
jobs

 

NEW QUESTION 51
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?

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

Answer: B

Explanation:
Explanation

 

NEW QUESTION 52
Which of the following commands will NOT update the modify timestamp on the file /tmp/myfile.txt?

  • A. touch /tmp/myfile.txt
  • B. file /tmp/myfile.txt
  • C. echo "Hello" >/tmp/myfile.txt
  • D. echo -n "Hello" >>/tmp/myfile.txt
  • E. sed -ie "s/1/2/" /tmp/myfile.txt

Answer: B

 

NEW QUESTION 53
Which of the following programs uses the hosts.allow file to perform its main task of checking for access control restrictions to system services?

  • A. mountd
  • B. fingerd
  • C. inetd
  • D. tcpd
  • E. xinetd

Answer: D

 

NEW QUESTION 54
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?

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

Answer: B

 

NEW QUESTION 55
CORRECT TEXT
On a Linux system with shadow passwords enabled, which file in the file system contains the password hashes of all local users? (Specify the full name of the file, including path.)

Answer:

Explanation:
/etc/shadow

 

NEW QUESTION 56
Which of the following commands will set the variable text to olaf is home? (Choose two)

  • A. text=='olaf is home'
  • B. text="olaf is home"
  • C. $text='olaf is home'
  • D. text=olaf\ is\ home
  • E. text=$olaf is home

Answer: B,D

 

NEW QUESTION 57
Which of the following command sequences overwrites the file foobar.txt?

  • A. echo "QUIDQUIDAGIS" < foobar.txt
  • B. echo "QUIDQUIDAGIS" >> foobar.txt
  • C. echo "QUIDQUIDAGIS" | foobar.txt
  • D. echo "QUIDQUIDAGIS" > foobar.txt

Answer: D

 

NEW QUESTION 58
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