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 data formats

Let's imagine there are two different systems on a network, such as a computer and a router. The computer wants to share data with the router but since these are two different devices altogether, the router may not understand or be able to interpret the message it receives from the computer. To solve this issue, data formats are used to ensure the data that is being exchanged between the systems is presented in a format that is easily understood by another system. Think of a data format as two people who both speak different languages using a common language such as English so that the information that's being exchanged can be easily understood by both.

Data formats go a step further to ensure computers, network devices, and applications are all able to understand data that is being shared between them. As an example, let's take a look at a simple web page written in the Hypertext Markup Language (HTML), as shown in the following screenshot...