Udemy promo code


Hi Keyboard bangers, For those who are interested in purchasing a course on Udemy, here is a last-minute promo deal: all Udemy courses are 40% off if you purchase through my link below. Remember to put the promo code EXPLORE40 ... Read More »

Cisco IOS Regex examples


Just like there are road shortcuts, there are IOS display shortcuts too. They are based on Cisco IOS Regex (Regular Expressions) operators. Here are some basic Regex examples that can be useful in your day-to-day network administration. Display the list ... Read More »

How to create a Gmail filter


Tired of manually placing incoming email into folders? Exhausted from deleting junk email and reporting it as spam? a Gmail filter is the answer you need. Gmail filters allow to apply a certain treatment to your flow of incoming mail. ... Read More »

ARP Protocol Explained

ARP is a link layer protocol in the TCP/IP model. It crosses the layer 3 in the OSI model, although it was created before the OSI model. Each protocol layer has its own addresses, e.g. IP addresses or Ethernet addresses. ... Read More »

Evernote Tutorial

evernote tutorial

Evernote is my favourite web clipping tool. I use it on both my home computer and office computer. What does Evernote do? Evernote allows you to bookmark your favourite websites into an online store. The beauty of bookmarking sites is ... Read More »

Decimal and Hexadecimal conversions


Every network engineer must know how to convert decimal to hex and hex to decimal. Decimal to Hexadecimal conversion To learn how to convert a decimal number to its hexadecimal format, let’s take an example. Suppose we want to convert ... Read More »

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