The Joy of Hex

Cisco certification candidates, particularly CCNA candidates, must master binary math. This includes basic conversions, such as binary-to-decimal and decimal-to-binary, as well as more advanced scenarios involving subnetting and VLSM.

Cisco Password Recovery

It might happen on your CCNA exam, it might happen on your production network – but sooner or later, you’re going to have to perform password recovery on a Cisco router or switch. This involves manipulating the router’s configuration register, and that is enough to make some CCNA candidates and network administrators really nervous!

Test your Backups Often to Ensure Reliability

If you’re like most small business owners, your computer data backups are one of those things that you rarely pay attention to. Computer data backups are kind of like flossing your teeth and eating low-fat, high-fiber foods everyone knows what they’re supposed to do, but how many REALLY do these things religiously?!?

Create a backup plan

Your company’s data may be its most important asset. Imagine a large corporation with millions of dollars of account receivable and account payable data stored on their network. A fire causes massive data loss. How much work would be required to re-create the lost data? Without backups, the company may not survive the disaster.

Accessing your PC from the road

Have you ever sat in front of your computer and wished you could show someone else what appeared on your screen?  Maybe you were experiencing a problem, or couldn’t figure out how to make something work, but you knew if someone else could see what was happening on your screen, they could help you fix the problem immediately.

What the heck is a Router?

Router is a computer device that receives or forwards data packets to and from the Internet towards a destination in the process called routing. Router is the essential component of the computer networking that enables any sent data to arrive at the right destination.

Deciphering Pings

As you study for your CCNA and CCNP exams, particularly if you’re getting hands-on practice in your home lab or rack rental service, you’re going to be sending a lot of pings.  

Five Debug Commands to Know

To pass the BSCI exam and move one step closer to CCNP certification success, you’ve got to know how and when to use debug commands to troubleshoot and verify network operations. While you should never practice debug commands on a production network, it’s important to get some hands-on experience with them and not rely on “router simulators” and… Read More »

How to Configure Reverse Telnet

Occasionally, during your CCNA and CCNP studies, you’ll run into a term that just doesn’t quite make sense to you.  (Okay, more than occasionally!)  One such term is “reverse telnet”.  As a Cisco certification candidate, you know that telnet is simply a protocol that allows you to remotely connect to a networking device such as a router or… Read More »