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

Spanning-tree standards

The STP is an open source Layer 2 loop prevention mechanism that is enabled on switches by default. STP is defined by IEEE 802.1D. However, Cisco does not implement the IEEE 802.1D version of spanning-tree on their devices.

Port roles and states

In this section, you will learn about the various port roles and states involved when an interface transitions into forwarding or blocking traffic.

The following are the port roles used in spanning-tree:

  • Root ports: These are the ports that are closest to the root bridge. If you recall, each switch always points toward the root bridge at the end of the election process. This means that each switch has a root port that points back to the root bridge on the network. Root ports are never on the root bridge itself.
  • Designated ports: These are what are known as non-root ports, which are still always able to forward traffic between devices on the network.
  • Alternate or backup ports: These are interfaces...