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Our Latest Blog Articles

What is the definition of a computer network

What is the Definition of a Computer Network: Components, Uses, and Types

What is the definition of a computer network? Computer networks are the foundation of the modern business world. They’re the connections that carry network traffic and link together the hardware and software of every digital device. Without a well-designed and functioning network, businesses and individuals wouldn’t be able to collaborate, share, or make their daily lives more efficient. This article will help you understand the definition of a computer network, its advantages, components, types, and uses. Basic Definition of a Computer Network The simplest and basic definition of a computer network can be described as “when two or more computers are linked together…

Vlan Tagged vs Untagged

VLAN Tagged vs Untagged – What is the difference?

VLAN Tagged vs Untagged Tutorial After reading an in-depth article about VLANs, you might still have questions about the differences between VLAN tagged vs. untagged? This blog post will discuss this topic in easy to understand language. Let’s briefly discuss the VLAN and VLAN tag and then dive into the difference between Vlan tagged vs. Untagged. VLANs:- Virtual LANs, or Virtual Local Area Networks, works on the Data link layer of the OSI model. VLANs help create virtual separations within a switch that provide distinct logical LANs or segregated broadcast domains that each behaves as if they were configured on…

What-are-VLANs-Network-with-Mutiple-VLANs

What are VLANs and Private VLANs and How VLANs work

What are VLANs and How VLANs work You might have many questions about VLANs. For example, what are VLANs, their benefits, configuration, and how do they work and differ from a LAN? Don’t worry, this blog post will discuss everything related to VLANs in simple, easy-to-understand language. What are VLANs – Infographic A Brief History of How we evolved from Hub to a Switch and then to VLANs People commonly used network hubs in the early days of networking to connect devices to a local area network (LAN). Because these devices were not intelligent, they sent every packet they received…

IP Subnetting Cheat Sheet Infographic

IP Subnetting Cheat Sheet (free PDF) for Network Engineers

A Simple and Easy to understand IP Subnetting Cheat Sheet With this IP subnetting cheat sheet article, we’ll provide you with all the details and show you how to subnet IP addresses, essential for network-related interviews, jobs, and exams. Understanding how subnetting works may seem difficult initially, but it begins to make sense as you continue. You can quickly create and deploy IP subnets that will give your organization the necessary level of design ease, scalability, management, and security you need. IP Subnetting Cheat Sheet Infographic PDF I hope you have downloaded the PDF, now let’s first understand a few basic things…

IKEv1 vs IKEv2 – What is the Difference?

Showdown: IKEv1 vs IKEv2 Internet Key Exchange (IKE) is a protocol used to set up a secured communication channel between two networks. To establish a secured channel, the two communicating parties need to create a Security Association (SA) between each other through the use of Internet Protocol Security (IPsec). This blog post will compare head to head between IKEv1 vs IKEv2 and provide some key insights. IKEv1 was one of the first standards for internet key exchange, a standard that had remained mostly unchanged for almost 12 years, the year 1995 when IETF first introduced IKE or IKEv1 through RFC…

More than 150 interview questions of network engineer

150+ Interview Questions of Network Engineer with Answers(Free PDF)

Important Tips and Interview Questions of Network Engineer with Answers Network engineers are the unsung heroes of the tech industry with an excellent take-home salaries. They are the ones who keep everything humming along by designing, installing, and maintaining the complex networks that keep us connected. While this makes you feel like an important person, however becoming a network engineer is not easy. You have to go through many rounds of interviews. You also have to be well prepared and know all the basic and advanced level interview questions of network engineer. It is a tedious process, especially when you don’t…

What is cisco vpc

What is Cisco vPC: Benefits, Components, Config & Best Practices

What is Cisco vPC and its brief History What is Cisco vPC (virtual Port Channel), and how has normal port-channel evolved to this point? Let us understand port-channel first; it is the simplest and oldest technology that combines two or more interfaces. In return, it gives the benefits like load balancing across links, redundancy in case any link goes down, increased bandwidth since you combined two or more links, and a single spanning-tree view of the links. However, these benefits come at the cost of connecting all the links within a bundle to a single device. And if that single device…

Tips for Video Interview

Practical Tips for Video Interview: A step by step Guide

Practicle Tips for Video Interview 2021- before, during, and After the interview:- If you are looking for Tips for Video Interview, then you came to the right place. Now, allow us to begin; most people who want a job undergo a rigorous interview process. But what if you could skip all that and get an instant decision? That’s what many employers now do, especially after the inception of the coronavirus. Working from home became a new normal for everyone throughout the world. Recruiters post jobs on sites like “Indeed,” Linkedin, etc., and immediately start taking the digital interview and streaming…

HSRP vs VRRP vs GLBP

HSRP vs VRRP vs GLBP – A Quick Guide

Which one to use while deciding between HSRP vs VRRP vs GLBP? This is really a matter of the type of equipment at your disposal, network design complexity, or sometimes personal preference. I have already written articles explaining HSRP, VRRP, and GLBP separately. All three are First Hop Redundancy Protocols and network layer protocols and are used to provide redundancy in the network. The main difference is that VRRP is industry-standard while HSRP and GLBP are Cisco-proprietary protocols. VRRP and HSRP target a single router to be the active one in a group, whereas GLBP can distribute the responsibility among…

How to Configure VRRP on Cisco Device

How to configure VRRP on Cisco Devices – With Video and Quiz

What is VRRP, Why we use it, and How to configure it on Cisco devices? Virtual Router Redundancy Protocol (VRRP) is an open standard FHRP (First Hop Redundancy Protocol) defined in RFC-5798. VRRP on Cisco devices can be configured to provide fault tolerance and redundancy at the network layer by quickly detecting and responding to router failures. It is designed to create redundancy in the network, especially when a router/switch or a layer 3 node serving as the default gateway for LAN users fails. Virtual Router Redundancy Protocol operates on the principle of a group of routers, or hosts, participating…

HSRP Config Full Guide

HSRP Config – The Definitive Guide with Video, Diagrams, Configs, and Quiz

What is HSRP, Why do we use it, and How to do HSRP config on Cisco Router? HSRP is an FHRP (First Hop Redundancy Protocol) developed by Cisco to provide redundancy and high network availability almost anywhere in the network where we have two layer3 devices. HSRP config gives a group of routers a virtual IP address and a virtual MAC address to look like one router. If one router doesn’t work, the other router can be the default gateway. The virtual router does not exist; it is merely a target for routers to provide backup to one another. One router…

Router-on-the-stick-config

Router on the Stick Configuration – Enterprise and Service Provider Example

The router on the stick configuration is a powerful and easy way to design your network. This method makes it very easy to add additional equipment to your network without the need to run a direct cable from your user device to the layer3 capable device. It is a networking terminology used to represent a layer3 device and a layer 2 switch where a single physical cable directly connects them. Here switch is a Layer 2 switch with multiple VLANs, and the router has all layer 3 IPs, and it handles all inter-VLAN communication. The port on the switch side…

Behavioural Interview Questions and Answers

21 Done For You Behavioural Interview Questions and Answers 2021

Behavioural interview questions and answers are designed to learn about your past behavior, which relates to the job description and position you are interviewing for. The general belief is that your past behavior is predictive of your future behavior, so the interviewer wants to learn what you have done to understand better how you will perform in the future. In this blog post, I will provide you with interview tips on handling behavioral questions and provide sample answers. I have taken a sample company like Cisco Systems here because, as a Network Engineer, most people’s dream job is to work…

Cisco Router Login Details

2 Simple Ways To Find Cisco Router Login Details Without Looking Like An Amateur

How to Find Cisco Router Login Details Cisco routers come with their own set of login instructions. However, it can be a pain to find what that information is. There are some basic things that you should know to log in to a Cisco router in a breeze. When you head over to Cisco, with so many technologies and product types to choose from, it is sometimes impossible to find relevant information. Especially when a router is in front of your eyes, and you are struggling to find Cisco router login details or even the Cisco router default password. In my post, I will…

This simple Windows10 feature can save you from staying up all night

What if I say that there is one simple windows10 feature, which is turned off by default and can help you sleep better specially if you work at night on your laptop. One of the most important thing in our life is sleep, whether you believe it or not a good night sleep can make you or break you in long run. We all have our day when we work late in the night on our laptops/computers. On one hand it helps you speed up your work but on the other hand it gives you sleep problems. I always had…