Book Image

CompTIA Linux+ Certification Guide

By : Philip Inshanally
Book Image

CompTIA Linux+ Certification Guide

By: Philip Inshanally

Overview of this book

The Linux+ certification provides a broad awareness of Linux operating systems, while giving professionals an upper hand in the IT industry. With this certification, you’ll be equipped with the all-important knowledge of installation, operation, administration, and troubleshooting services. This CompTIA Linux+ Certification Guide will give you an overview of the system architecture. You’ll understand how to install and uninstall Linux distributions, followed by working with various package managers. You’ll then move on to manipulating files and processes at the command-line interface (CLI) and creating, monitoring, killing, restarting, and modifying processes. As you progress, you’ll be equipped to work with display managers and learn how you can create, modify, and remove user accounts and groups, as well as understand how to automate tasks. The last set of chapters will help you configure dates and set up local and remote system logging. In addition to this, you’ll explore different internet protocols, and delve into network configuration, security administration, Shell scripting, and SQL management. By the end of this book, you’ll not only have got to grips with all the modules you need to study for the LX0-103 and LX0-104 certification exams, but you’ll also be able to test your understanding with practice questions and mock exams.
Table of Contents (23 chapters)
19
Mock Exam - 1
20
Mock Exam - 2

Well-known protocols

There are a number of well-known protocols that we use in our environment that we need to be aware of. For starters, when we browse the internet, we are in fact use the HTTP protocol in order to view a web page. Additionally, when we are copying a file from a server and providing authentication; in the backend, we are using some type of FTP protocol. Likewise, when we type out a URL, we are in fact using DNS for name resolution. As we can see, we are using a number of protocols in our environments. Some well-known protocols and their respective port numbers are described next.

TCP

Transmission Control Protocol (TCP) is a connection-oriented protocol that offers a number of services, including error checking...