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

Exploring routing concepts

Routers are Layer 3 devices that operate at the Network layer of the Open Systems Interconnection (OSI) and the Internet layer of the Transmission Control Protocol/Internet Protocol (TCP/IP) networking models. Routers are one of the most essential networking devices found within private and public networks as they allow network professionals to interconnect two or more different networks together, and forward packets to their destinations. For instance, routers can interconnect different IP subnets, allowing devices on one IP network to communicate with hosts on another IP network and interconnect networks with different media types, such as an Ethernet network with a fiber optic.

Routers are built to perform many Layer 3 operations such as Network Address Translation (NAT) and filtering traffic using Access Control Lists (ACLs). Some routers even support Virtual Private Network (VPN) capabilities, allowing network professionals to set up site-to-site...