TESTVALID OFFERS THREE FORMATS OF UPDATED LPI 102-500 EXAM QUESTIONS

TestValid Offers Three Formats of Updated Lpi 102-500 Exam Questions

TestValid Offers Three Formats of Updated Lpi 102-500 Exam Questions

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Lpi LPIC-1 Exam 102, Part 2 of 2, version 5.0 Sample Questions (Q48-Q53):

NEW QUESTION # 48
Which of the following programs can be used to determine the routing path to a given destination?

  • A. traceroute
  • B. dig
  • C. netstat
  • D. ping
  • E. route

Answer: A

Explanation:
The traceroute program can be used to determine the routing path to a given destination by sending packets with incrementing TTL values and recording the source of the ICMP time exceeded messages. This way, it can show the intermediate hops and the round-trip times for each packet. The other programs have different purposes: dig is used to query DNS servers, netstat is used to display network connections and statistics, ping is used to test the reachability of a host by sending ICMP echo requests and measuring the response time, and route is used to manipulate the routing table. Reference:
LPI 102-500 Exam Objectives, Topic 110: Network Fundamentals, Weight: 4, 110.3 Basic network troubleshooting LPI 102-500 Study Guide, Chapter 10: Network Fundamentals, Section 10.3: Basic Network Troubleshooting, Page 125-126


NEW QUESTION # 49
What is the purpose of a screen reader?

  • A. It displays lines and markers to help people use speed reading techniques.
  • B. It manages and displays files that contain e-books.
  • C. It reads text displayed on the screen to blind or visually impaired people.
  • D. It reads the parameters of the attached monitors and creates an appropriate X11 configuration.

Answer: C


NEW QUESTION # 50
Which of the following fields are available in the standard format of both the global /etc/crontab file as well as in user-specific crontab files? (Choose two.)

  • A. Command
  • B. Year
  • C. Minute
  • D. Username
  • E. Effective group ID

Answer: A,C

Explanation:
The standard format of both the global /etc/crontab file and user-specific crontab files consists of six fields separated by spaces or tabs. The first five fields indicate when to execute the command that is specified in the sixth field. The fields are:
* Minute: The minute of the hour (0-59) when the command should run.
* Hour: The hour of the day (0-23) when the command should run.
* Day of month: The day of the month (1-31) when the command should run.
* Month: The month of the year (1-12 or Jan-Dec) when the command should run.
* Day of week: The day of the week (0-7 or Sun-Sat, with 0 or 7 representing Sunday) when the command should run.
* Command: The command or script to execute.
For example, the following entry in a crontab file will run the command /usr/bin/backup.sh every day at 2:30 AM:
30 2 * * * /usr/bin/backup.sh
The global /etc/crontab file has an additional field between the fifth and sixth fields, which is:
* Username: The name of the user who will execute the command.
For example, the following entry in the /etc/crontab file will run the command /usr/bin/apt update as the root user every hour:
0 * * * * root /usr/bin/apt update
The other fields in the options are not part of the standard format of crontab files:
* Year: This field is not supported by the standard cron daemon, but it may be available in some implementations, such as the Vixie cron. It would specify the year (1970-2099) when the command should run, and it would be placed after the month field.
* Effective group ID: This field is not supported by any cron implementation, and it would not make sense to specify the group ID of the user who will execute the command, since it can be derived from the user ID.
References:
* LPIC-1 Exam 102 Objectives, Topic 107: Administrative Tasks, Subtopic 107.2: Automate system administration tasks by scheduling jobs, Weight: 4, Key Knowledge Areas: Use cron and systemd timers to run jobs at regular intervals and to use anacron to manage system cron jobs. Objective: Use cron to run jobs at regular intervals.
* LPIC-1 Exam 102 Learning Materials, Topic 107: Administrative Tasks, Subtopic 107.2: Automate system administration tasks by scheduling jobs, Section 107.2.1: cron, Page 18-20.


NEW QUESTION # 51
After adding a new email alias to the configuration, which command must be run in order to ensure the MTA knows about it? (Specify the command without any path but including all required parameters.)

Answer:

Explanation:
newaliases, sendmail -bi


NEW QUESTION # 52
What is the main difference between the batch and at commands?

  • A. The at command reads commands from standard input. The batch command requires a command line argument.
  • B. The batch command will run when system load is low. The at command runs at a specific time.
  • C. The at command e-mails results to the user. The batch command logs results to syslog.
  • D. The batch command will run multiple times.The at command will only run once.

Answer: B

Explanation:
The batch command is similar to the at command, except that it executes commands when the system load levels permit; in other words, when the load average drops below 1.5, or the value specified in the invocation of atd1. The at command allows us to schedule jobs using any of two commands: at and batch. While at runs commands at our specified time, batch runs commands when our system's load average is below 0.82. Both commands read commands from standard input or a specified file, and both commands send the output of the commands to the user by mail1. Therefore, the main difference between them is the time of execution: at runs at a fixed time, while batch runs when the system is idle. Reference: 1: Linux At, Batch, Atq, Atrm Command Help and Examples - Computer Hope 2: The "at" Command in Linux | Baeldung on Linux


NEW QUESTION # 53
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