Types of Real Lpi 102-500 Exam Questions

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Lpi 102-500 Certification Exam is designed to test candidates on a range of skills and knowledge areas, including managing user accounts and groups, managing file permissions and ownership, managing system services, and configuring network interfaces. 102-500 Exam also covers advanced topics such as troubleshooting network connectivity issues and configuring secure communication channels.

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Security

Like any other security concept, Linux security covers the objectives as follow:

Setting up host security;
Deal with OpenSSH 2 configuration for clients and understand its key roles;
Setting diverse passwords, utilize nmap as well as netstat to explore system ports that are open;
Securing data through encryption;

Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0 Sample Questions (Q113-Q118):

NEW QUESTION # 113
On a regular users workstation the route command takes a long time before printing out the routing table.
Which of the following errors does that indicate?

A. The local routing information may be corrupted and must be re-validated using a routing protocol.
B. There may accidentally be more than one default router in which case a default router election has to be done on the network in order to choose one router as the default.
C. One of the routers in the routing table is not available which causes the automatic router failure detection mechanism (ARF-D) to wait for a timeout.
D. DNS resolution may not be working as route by default tries to resolve names of routers and destinations and may run into a timeout.

Answer: D

Explanation:
The route command displays the kernel's routing table, which contains information about how packets are routed to different destinations. By default, route tries to resolve the IP addresses of the routers and destinations to their hostnames using DNS. If DNS is not working properly, this can cause a delay in displaying the routing table as route waits for the DNS queries to time out. To avoid this, route can be used with the -n option, which prevents DNS lookups and displays only numeric addresses. References:
* LPI 102-500 Exam Objectives, Topic 109: Network Fundamentals, 109.3 Basic network troubleshooting
* LPI 102-500 Study Guide, Chapter 9: Network Troubleshooting, Section 9.2: Troubleshooting Routing Problems

NEW QUESTION # 114
Which of the following commands lists all queued print jobs?

A. lpd
B. lpq
C. lsq
D. lp
E. lpr

Answer: B

NEW QUESTION # 115
The X11 configuration file xorg.conf is grouped into section. How is the content of the section represented?
SectionName

A. It is placed after the row [SectionName].
B. It is placed between the tags <Section name="SectionName"> and </Section>.
C. It is placed after an initial unindented Section "SectionName" and must be indented by exactly one tab character.
D. It is placed in curly brackets as in Section SectionName {...}.
E. It is placed between a line containing Section "SectionName" and a line containing EndSection.

Answer: E

NEW QUESTION # 116
In which file, if present, must all users be listed that are allowed to use the cron scheduling system? (Specify the full name of the file, including path.)

Answer:

Explanation:
/etc/cron.allow
Explanation:
The /etc/cron.allow file is a file that contains a list of users who are allowed to use the cron scheduling system.
The cron scheduling system is a way of running commands or scripts at specified times or intervals. Users can create their own cron jobs by using the crontab command, which edits a file called crontab that stores the user's scheduled tasks. However, not all usersmay have access to the crontab command or the cron system.
The access is controlled by two files: /etc/cron.allow and /etc/cron.deny. If the /etc/cron.allow file exists, then only the users listed in this file can use the crontab command and the cron system. The file should have one user name per line. If the /etc/cron.allow file does not exist, then the /etc/cron.deny file is checked. If this file exists, then the users listed in this file are denied access to the crontab command and the cron system. If neither file exists, then the access depends on the configuration of the cron daemon, which is the program that runs the cron jobs. By default, only the root user can use the cron system if no files exist. The root user can always use the cron system regardless of the existence or content of these files. To create or edit the
/etc/cron.allow file, the root user needs to use a text editor such as vi, nano, or emacs. For example, to allow the users alice and bob to use the cron system, the root user can use the following command:
sudo vi /etc/cron.allow
And then add the following lines to the file:
alice bob
And then save and exit the file. References:
* How cron.allow and cron.deny can be used to limit access to crontab for ...
* /etc/cron.allow - Linux Bash Shell Scripting Tutorial Wiki
* Linux / UNIX Restrict at / cron Usage To Authorized Users

NEW QUESTION # 117
Why is /etc/shadow not world readable if the passwords are stored in an encrypted fashion?

A. The passwords can be decrypted by anyone with root access.
B. There is other information in the file that needs to be kept secret.
C. The encrypted passwords are still subject to brute force attacks.
D. This is just for historical reasons.

Answer: C

Explanation:
The /etc/shadow file is not world readable because the encrypted passwords stored in it are still vulnerable to offline brute force attacks. A brute force attack is a method of trying every possible password until finding the correct one. With modern hardware and software, millions of passwords can be tried per second. If the /etc/shadow file was world readable, anyone who logged in to the system, even as a guest, could copy the file and attempt to crack the passwords without leaving any trace. By making the file readable only by the root user, the system prevents unauthorized access to the password hashes and reduces the risk of password compromise. The other options are incorrect because they do not explain the reason for the file permissions. Option B is false, as the /etc/shadow file was created to address the security issues of the /etc/passwd file, which used to store the passwords in a world readable file. Option C is partially true, as the /etc/shadow file does contain other information related to password expiration and account locking, but this is not the main reason for making the file not world readable. Option D is irrelevant, as the passwords cannot be decrypted by anyone, even with root access, as the encryption is one-way and irreversible. Reference: https://www.computernetworkingnotes.com/linux-tutorials/etc-shadow-file-in-linux-explained-with-examples.html
https://kerneltalks.com/user-management/understanding-etc-shadow-file/

NEW QUESTION # 118
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