CCNA | Fast Reroute

Explain the role of DHCP and DNS within the network

May 18, 2020

In this blog post, we will cover the role of 2 important services – DHCP and DNS. The CCNA exam includes the following topics that we will explore in detail..

Determine how a router makes a forwarding decision

May 10, 2020

In this blog post, we will discover how a Cisco router selects the best route to use for packet forwarding.

Describe Characteristics of Network Topology Architectures

May 3, 2020

We wrote a blog post about 2-tier and 3-tier campus network architecture, which is one of the topics of the older version of the CCNA exam. The content is still relevant, so we will provide only summary information here for completeness. Other topics that will be covered in this post include data center leaf-and-spine architecture, WAN topologies, small office/home office networks, and comparison between on-premises and cloud environments.

Describe Wireless Principles CCNA

Apr 27, 2020

The new CCNA exam now includes topics from the discontinued CCNA Wireless exam. We will divide these topics into several blog posts – this one will focus on radio fundamental topics and the following posts will cover SSIDs, security protocols, and encryption.

Explain Role and Function of Network Components – Part 3 – Routers, Firewalls, and IPSs

Apr 5, 2020

This is the third article about the roles and functions of different network components (click on the links for the first and second parts). In this part we will discuss operations of devices deployed on the network edge – Routers, Firewalls and Intrusion Protection Systems (IPSs).

Explain Role and Function of Network Components – Part 2 – Cisco Access Points and WLCs

Mar 30, 2020

This is the second part of the series of articles about the roles and functions of different network components. In this part, we will discuss the operations of Cisco Wireless Access Points (APs) and Cisco WLAN Controllers (WLCs). The purpose of this blog post is to explain what a Cisco-based wireless network consists of and how these elements interact with each other.

Explain Role and Function of Network Components – Part 1

Mar 25, 2020

This blog post provides an overview of different network components and their role and functions. The article’s target audience is CCNA candidates and students looking for introductory information about computer network components. In this first post of the 3-article series, we will start by exploring the functions of endpoints and servers. Then the section about LAN switches will follow focusing on the difference between Layer 2 and Layer 3 switch operation.