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

IPv4 subnetting and VLSM

To further understand how subnetting helps network professionals, let’s take a deeper dive into getting the hands-on skills on breaking down an IP address block to create subnets for an organization. In this exercise, let’s imagine you’re the network administrator or network engineer for a fictional organization that has a total of four offices that are interconnected using a Wide Area Network (WAN) solution, as shown in the following network topology:

Figure 5.12 – Network topology

Your objective is to create an IPv4 addressing scheme for the entire organization, ensuring each office location has an IP subnet and that there’s the least wastage of IP addresses per subnet. The following sub-sections will guide you through the process of subnetting.

Step 1 – determining the appropriate IPv4 block

To get started with subnetting as a network professional, you will need to determine the total...