LX0-104 by CompTIA Actual Free Exam Questions And Answers

Question 1

FILL BLANK
What command displays all aliases defined in the current shell? (Specify the command without any path information)

Discussion 0

Correct Answer:

alias -or- alias -p
Section: Shells, Scripting and Data Management

Question 2

Which of the following actions prevents a specific user form scheduling tasks usingatorbatch?

A. Add the specific user to the [deny] section in the/etc/std.conffile.

B. Add the specific user to the/etc/at.denyfile.

C. Add the specific user to thenojobsgroup.

D. Add the specific user to the/etc/ at.allowfile.

E. Runatd --denyfollowed by the name of the specific user.

Discussion 0

Correct Answer: B Vote an answer

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Question 3

Why should an NTP client maintain connections to several NTP servers?

A. To receive NTP information every second as each server transmits NTP pings every five seconds only.

B. To not overload the remote server in case the local NTP time cache is not enabled.

C. To improve the precision of the time by comparing responses from several servers.

D. To not lose contact with all NTP servers in case the client changes networks.

Discussion 0

Correct Answer: C Vote an answer

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Question 4

Which configuration file would be edited to change default options for the OpenSSH server?

A. /etc/ssh/server

B. /etc/ssh/ssh_config

C. /etc/ssh/ssh

D. /etc/ssh/sshd_config

E. /etc/ssh/ssh_server

Discussion 0

Correct Answer: D Vote an answer

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Question 5

Which command will set the local machine's timezone to UTC?

A. date --timezone=UTC

B. cat UTC > /etc/timezone

C. ln -s /usr/share/zoneinfo/UTC /etc/localtime

D. mv /usr/timezone/UTC /etc

Discussion 0

Correct Answer: C Vote an answer

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Question 6

FILL BLANK
What is the lowest numbered unprivileged TCP port? (Specify the number in digits only.)

Discussion 0

Correct Answer:

1024
Section: Networking Fundamentals

Question 7

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

A. 192.168.168.4 dns-server

B. multi on

C. include /etc/nsswitch.d/

D. hosts: files dns

Discussion 0

Correct Answer: D Vote an answer

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Question 8

FILL BLANK
Which environment variable should be set in order to change the time zone for the commands run from within the environment variable's scope? (Specify the variable name only.)

Discussion 0

Correct Answer:

TZ
Section: Administrative Tasks

Question 9

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

A. ssh-add

B. ssh-agent

C. sshd

D. ssh-keygen

Discussion 0

Correct Answer: B Vote an answer

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Question 10

What is true regarding the command userdel --force --remove bob? (Choose TWO correct answers.)

A. In case bob was the last member of a group, that group is deleted.

B. All files owned by bob are remove from all mounted filesystems.

C. The user bob is removed from the system's user database.

D. The user bob's home directory is removed.

E. The locate database is updated to drop files owned by bob.

Discussion 0

Correct Answer: C,D Vote an answer

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Question 11

Which of the following parameters are used for journalctl to limit the time frame of the output? (Choose TWO correct answers.)

A. --from

B. --until

C. --since

D. --date

E. --upto

Discussion 0

Correct Answer: B,C Vote an answer

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Question 12

FILL BLANK
What is the name of the simple graphical login manager that comes with a vanilla X11 installation? (Specify ONLY the command without any path or parameters.)

Discussion 0

Correct Answer:

xdm
Section: User Interfaces and Desktops

Question 13

In order to discover the link layer address of the device that owns a specific IPv4 or IPv6 address, which mechanism is used?

A. Both IPv4 and IPv6 use Neighbor Discovery.

B. IPv4 uses Neighbor Discovery while IPv6 uses ARP.

C. Both IPv4 and IPv6 can use either ARP or Neighbor Discovery depending on the network.

D. IPv4 uses ARP while IPv6 uses Neighbor Discovery.

E. Both IPv4 and IPv6 use ARP.

Discussion 0

Correct Answer: D Vote an answer

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Question 14

What is true regarding the statement beginning with #! That is found in the first line of a script?

A. It prevents the script from being executed until the ! is removed.

B. It is a comment that is ignored by the script.

C. It specifies the path and the arguments of the interpreter used to run the script.

D. It specifies the character encoding of the script.

Discussion 0

Correct Answer: C Vote an answer

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