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

Special IPv4 addresses

In the IPv4 address space, there are three special network blocks that are reserved for special usage. These special IPv4 addresses are as follows:

  • Loopback address
  • Test-Net
  • Link Local

In this section, we will look at each of their characteristics and use cases.

Loopback address

The loopback range of an address is built into the TCP/IP protocol suite. This range of addresses allows an application running on a host machine to communicate with an application on the same machine. To put it more simply, loopback addresses allow a host operating system to send network traffic to itself.

The network block is reserved for loopback and has the range 127.0.0.1/8 to 127.255.255.254/8. Therefore, to test the functionality of the TCP/IP protocol suite, you ping any address from the loopback range. Most commonly, network professionals ping the 127.0.0.1 address.

Test-Net

According to RFC 3330, the block of addresses 192.0.2.0/24 to...