LPIC 102 Exam Preparation Guide

A utility that allows users to schedule commands to run at a specific time in the future.

A file that defines scheduled jobs run by anacron. Each line represents a job with its period, delay, identifier, and command.

A service that handles scheduling commands to run at a later time.

A utility that runs commands when system load levels are low, similar to at but prioritizing system performance.

Anacron is a utility that runs commands at specific intervals, even if the system wasn't running at that exact time.

An integer representing the number of days between job executions in the anacrontab file.

An integer representing the number of minutes to wait before a job runs after the specified period in the anacrontab file.

A unique identifier for a job defined in the anacrontab file.

A clock that runs independently of operating system, powered by CMOS battery, and keeps time even when the computer is off.

A clock that relies on the operating system to run and keeps time based on Unix epoch (January 1, 1970, 00:00:00 UTC).

A file containing a symbolic link that points to a specific timezone in the /usr/share/zoneinfo directory.

A file containing the configured timezone.

A command used to control the System clock.

A program that controls the Hardware clock.

A command used to synchronize the System clock with a time server.

A program that synchronizes the System clock with time servers using Network Time Protocol (NTP) for continuous accuracy.

The 'date' command is used to display or set the system time.

You can control how the current time and/or date is displayed using format strings.

The '%c' format string displays the locale's current date and time.

The '%Y-%m-%d' format represents a combined year, month, and day in the standard YYYY-MM-DD format.

Use the '%%' escape sequence to represent a literal percentage symbol.

The '%a' option displays the abbreviated weekday name based on the system's locale.

The '%A' option outputs the full weekday name according to the current locale.

The '%b' option displays the abbreviated month name based on the system's locale.

The '%B' option outputs the full month name according to the current locale.

The '%d' option displays the day of the month as a two-digit number, zero-padded if necessary.

Adjusts the system time to a specific value, allowing for customization of the date and time.

Sets the system time to a specific value, including year, month, day, hour, minute, and seconds.

A program that connects to a time server to synchronize the system clock with a more precise time.

A daemon that regularly polls one or more time servers to maintain accurate system time.

A file that stores the local hardware clock drift, which is used to improve time accuracy during boot.

The Linux kernel is the core of the Linux operating system. It manages the system's resources, such as the CPU, memory, and storage.

Kernel modules are add-ons to the core Linux kernel, providing additional functionality. They allow the system to handle new hardware or software components.

The boot process is the sequence of steps that happen when you turn on your computer. It loads the operating system (Linux) into memory and prepares the system for use.

Runlevels are different operating modes or states for a Linux system. Each runlevel defines specific services and processes that will be running.

Printing on Linux involves managing printers, print queues, and printing files. This includes tasks like adding printers, managing print jobs, and sending documents to the printer.

Documentation provides information about the Linux system, its components, and how to use them. It's crucial for learning about the system and troubleshooting problems.

The shell is the command-line interpreter. It allows you to interact with the system directly by typing commands.

Scripting involves writing small programs using scripting languages to automate tasks. It helps in performing repetitive actions or complex procedures more efficiently.

Administrators manage users and groups, configure system settings, and maintain system security. It's a critical role in ensuring the stability and security of the Linux system.

Networking fundamentals include understanding basic concepts like TCP/IP, networking protocols, and network addressing. Knowing these helps explain how networks function.

Networking Services are programs that provide specific network functions, enabling communication and data sharing. Examples include web servers, email servers, and file sharing services.

Linux Security involves protecting the system from unauthorized access, malicious attacks, and data breaches. It ensures that the system operates securely.

Managing kernel and kernel modules involves controlling their loading, unloading, and configuration. It helps ensure the system runs smoothly and efficiently.

Reconfiguring, building, and installing a custom kernel involves modifying kernel settings, compiling a new kernel, and replacing the existing kernel with the custom version. This allows for optimizing performance and adding specific features.

Booting the system involves the initial startup sequence, where the computer loads the operating system into memory.

Changing runlevels involves switching between different operating modes, which can influence the services and processes running on the system.

Managing printers and print queues involves configuring printers, managing print jobs, and troubleshooting printing issues.

Printing files involves sending documents to the printer for printing, managing print jobs, and checking printing status.

Installing and configuring printers involves connecting printers to the system, configuring print settings, and adding printers to the system's print queue.

A set of rules that define how data is transmitted over a network.

The system that manages how computers communicate with each other over a network. It determines how data is packaged, addressed, and sent.

A unique identifier assigned to a device on a network, allowing it to be located and communicated with.

A reserved portion of IP address space, used for private networks within an organization, not accessible from the public internet.

A type of IP address used to communicate with multiple devices simultaneously, forming a group.

A protocol responsible for sending and receiving messages between hosts on a network, confirming the arrival of packets and ensuring reliable data transfer.

A protocol responsible for delivering packets between networks, handling routing and addressing.

A network management protocol used for monitoring network performance and collecting data from devices on a network.

A protocol used for transferring files between computers over a network, often used for sharing data.

A protocol used for sending and receiving email messages over a network.