Free Lpi 102-500 Practice Exams - Page 11 of 11

Question #101

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

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.

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Question #102

Which port is the default server port for the HTTPS protocol? (Specify the port number using digits.)

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Question #103

Which of the following environment variables can be defined in locale. conf? (Choose TWO correct answers.)

A . LC_ALL
B . LC_USERNAME
C . LC_U?F8
D . LC_GEOGRAPHY
E . LC_TIME

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Question #104

Which of the following commands puts the output of the command date into the shell variable mydate?

A . mydate="$(date)"
B . mydate="exec date"
C . mydate="$((date))"
D . mydate="date"
E . mydate="${date}"

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Question #105

Given the following excerpt of the sudo configuration:

jane ANY=NOPASSWD: /bin/kill, /bin/id, PASSWD: /sbin/fdisk

Which of the following statements are true? (Choose three.)

A . Jane can run /bin/id only after specifying her password.
B . Jane can run /sbin/fdisk after specifying root’s password.
C . Jane can run /sbin/fdisk after specifying her password.
D . Jane can run /bin/kill without specifying a password.
E . Jane can run /bin/id without specifying her password.

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Correct Answer: C, D, E
C, D, E

Explanation:

The sudo configuration file (/etc/sudoers) defines the rules for granting privileges to users or groups to execute commands as another user, usually the superuser or root.

The format of the sudo configuration file is as follows:

user_list host_list=effective_user_list tag_list command_list

The user_list specifies the users who can run the commands, the host_list specifies the hosts where the commands can be run, the effective_user_list specifies the user as whom the commands can be run, the tag_list specifies some options for the commands, and the command_list specifies the commands that can be run.

In this case, the user_list is jane, the host_list is ANY (meaning any host), the effective_user_list is not specified (meaning root by default), the tag_list is NOPASSWD or PASSWD (meaning whether a password is required or not), and the command_list is /bin/kill, /bin/id, or /sbin/fdisk.

Therefore, the sudo configuration file allows jane to run /bin/kill, /bin/id, or /sbin/fdisk as root on any host, but with different password requirements. Specifically:

Jane can run /bin/kill without specifying a password, because the tag_list is NOPASSWD for this command. This means that jane can execute sudo /bin/kill and the command will run as root without asking for any password. This makes option D true.

Jane can run /bin/id without specifying a password, because the tag_list is also NOPASSWD for this command. This means that jane can execute sudo /bin/id and the command will run as root without asking for any password. This makes option E true.

Jane can run /sbin/fdisk after specifying her password, because the tag_list is PASSWD for this command. This means that jane can execute sudo /sbin/fdisk and the command will ask for jane’s password before running as root. This makes option C true. The other options are false because:

Jane cannot run /bin/id only after specifying her password, because the tag_list is NOPASSWD for this command. This makes option A false.

Jane cannot run /sbin/fdisk after specifying root’s password, because the password that is required is jane’s password, not root’s password. This makes option B false.

Reference: LPI Linux Essentials: 1.4. Using sudo

LPI Linux Administrator: 102.5. Use Debian package management LPI Linux Engineer: 201.1. Measure and Troubleshoot Resource Usage LPI Linux Professional Certification Program

Question #106

Given the following routing table:

How would an outgoing packet to the destination 192.168.2.150 be handled?

A . It would be passed to the default router 192.168.178.1 on wlan0.
B . It would be directly transmitted on the device eth0.
C . It would be passed to the default router 255.255.255.0 on eth0.
D . It would be directly transmitted on the device wlan0.
E . It would be passed to the router 192.168.1.1 on eth0.

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Question #107

Which of Ihe following slates can NetworkManager show regarding the system’s network connectivity? (Choose TWO correct answers.)

A . Up
B . Portal
C . full
D . Login-required
E . firewalled

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Question #108

Which file contains a set of services and hosts that will be allowed to connect to the server by going through a TCP Wrapper program such as tcpd? (Specify the full name of the file, including path.) https://lh3.googleusercontent.com/-5cd-clmKnbk/AAAAAAAAAAI/AAAAAAAAADM/-SXesH19Ido/s46-c-k-no/photo.jpg

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