Book Image

CompTIA Network+ N10-008 Certification Guide - Second Edition

By : Glen D. Singh
Book Image

CompTIA Network+ N10-008 Certification Guide - Second Edition

By: Glen D. Singh

Overview of this book

This book helps you to easily understand core networking concepts without the need of prior industry experience or knowledge within this fi eld of study. This updated second edition of the CompTIA Network+ N10-008 Certification Guide begins by introducing you to the core fundamentals of networking technologies and concepts, before progressing to intermediate and advanced topics using a student-centric approach. You’ll explore best practices for designing and implementing a resilient and scalable network infrastructure to support modern applications and services. Additionally, you’ll learn network security concepts and technologies to effectively secure organizations from cyber attacks and threats. The book also shows you how to efficiently discover and resolve networking issues using common troubleshooting techniques. By the end of this book, you’ll have gained sufficient knowledge to efficiently design, implement, and maintain a network infrastructure as a successful network professional within the industry. You’ll also have gained knowledge of all the official CompTIA Network+ N10-008 exam objectives, networking technologies, and how to apply your skills in the real world.
Table of Contents (26 chapters)
Part 1: Networking Concepts
Part 2: Network Implementation
Part 3: Network Operations
Part 4: Network Security and Troubleshooting
Chapter 18: Practice Exam

Wireless connectivity issues

Wireless networks are becoming more and more ubiquitous around the world as they free us from many of the technical difficulties of wired networks. However, they also introduce a number of complications that must be considered. In this section, we will explore some of the most common issues that technicians face in wireless networks.

Physical layer issues

Wireless signals face even more obstructions than signals in wired media, as these wireless signals propagate in unguided media. Radio frequency (RF) signals between Access Points and client devices often have to propagate through various objects and materials, including concrete walls, glass, and other electronic items. While propagating through these materials, these signals may undergo phenomena, such as reflection, where the signals bounce off certain surfaces such as metallic objects; refraction, where the signals bend due to traveling through two dissimilar media; and absorption, where the...