Configure and Verify Single Area OSPFv2
Jan 28, 2021
The basic configuration of OSPF requires only a couple of commands. However, to understand how the protocol works an exam candidate must learn OSPF components, some of them are complex. CCNA exam tests knowledge of OSPF operation in a single-area network.
Read MoreInterpret JSON Encoded Data
Jun 14, 2020
In this blog post, we will provide an introduction to Python components and scripts in the context of Cisco certification.
Read MoreInterpret Basic Python Components and Scripts
Jun 8, 2020
In this blog post, we will provide an introduction to Python components and scripts in the context of Cisco certification.
Read MoreDescribe characteristics of REST-based APIs
May 30, 2020
In this blog post, we will discuss REST-based APIs. We will also demonstrate how to use such APIs with step-by-step scenarios using a Cisco virtual router running on the ESXi platform.
Read MoreExplain 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..
Read MoreDetermine 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.
Read MoreDescribe 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.
Read MoreDescribe 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.
Read MoreCompare Physical Interface and Cabling Types CCNA
Apr 18, 2020
Physical interface and cabling types is another topic from the current CCNA exam blueprint. Network engineers must know what the physical connectivity options exist, understand their limitations in speed and bandwidth. Power over Ethernet (PoE) is another related and important topic, as many critical devices are now dependent on network-delivered power.
Read MoreCisco DNA Center
Apr 11, 2020
This article describes the role and functions of Cisco DNA Center in the context of CCNA exam blueprint requirements.
Read MoreExplain 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).
Read MoreExplain 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.
Read MoreExplain 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.
Read MoreConfigure SNMP on Cisco Devices
Dec 27, 2018
This article contains information on how to enable SNMP agents on different Cisco devices, including IOS, IOS-XE, and NX-OS-based.
Read MoreConfigure, Verify, and Troubleshoot IPv6 Addressing
Nov 18, 2018
To configure IPv6 in IOS, as with IPv4, addresses need to be assigned to interfaces. You can assign a single link-local address and multiple global addresses. In comparison to IPv4, IPv6 unicast routing is disabled by default and needs to be globally enabled.
Read MoreIPv6 Addressing Scheme
Nov 11, 2018
IPv6 addresses are 128-bit long. An address is divided into 8 groups each containing 4 hexadecimal digits. Groups are separated from each other by colons. Each group is 16-bit long and called hextet.
Read MoreCompare and Contrast Collapsed Core and Three-Tier Architectures
Nov 3, 2018
Compare and Contrast Collapsed Core and Three-Tier Architectures
Read MoreDescribe The Effects of Cloud Resources on Enterprise Network Architecture
Oct 28, 2018
CCNA Routing and Switching exam has this topic in the blueprint, which I will try to cover in this blog post
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