Book Image

Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide

By : Glen D. Singh
Book Image

Implementing and Administering Cisco Solutions: 200-301 CCNA Exam Guide

By: Glen D. Singh

Overview of this book

In the dynamic technology landscape, staying on top of the latest technology trends is a must, especially if you want to build a career in network administration. Achieving CCNA 200-301 certification will validate your knowledge of networking concepts, and this book will help you to do just that. This exam guide focuses on the fundamentals to help you gain a high-level understanding of networking, security, IP connectivity, IP services, programmability, and automation. Starting with the functions of various networking components, you’ll discover how they are used to build and improve an enterprise network. You’ll then delve into configuring networking devices using a command-line interface (CLI) to provide network access, services, security, connectivity, and management. The book covers important aspects of network engineering using a variety of hands-on labs and real-world scenarios that will help you gain essential practical skills. As you make progress, this CCNA certification study guide will help you get to grips with the solutions and technologies that you need to implement and administer a broad range of modern networks and IT infrastructures. By the end of this book, you’ll have gained the confidence to pass the Cisco CCNA 200-301 exam on the first attempt and be well-versed in a variety of network administration and security engineering solutions.
Table of Contents (26 chapters)
1
Section 1: Network Fundamentals
6
Section 2: Network Access
9
Section 3: IP Connectivity
12
Section 4: IP Services
15
Section 5: Security Fundamentals
20
Section 6: Automation and Programmability
22
Chapter 16: Mock Exam 1
23
Chapter 17: Mock Exam 2

Understanding static routing

Why don't Cisco routers automatically forward traffic like Cisco IOS switches? Each interface on a Cisco router must be on a unique IP network. Without configuring an IP address on a router's interface, the router will not know what to do with incoming messages without an IP assignment. To put this simply, when you unbox a new Cisco IOS router and insert it into your network, it does not do anything. That's right – it does absolutely nothing by default.

When you configure an IP address on a Cisco IOS router's interface, the router inserts two routes within its routing table. Let's take a look at the following topology to get a better understanding of this:

Figure 8.1 – Simple network topology

Within the network topology, there are a total of three networks: 192.168.1.0/24, 192.168.2.0/24, and 192.168.3.0/24. We would assume the routers automatically know about all the networks and update...