* What is an electron microscope?
Invented by a German physicist named Ernst Ruska, electron microscopes are mostly used in archaeology, medicine, and geology to look at surfaces or layers of objecs. Rather than using light, electron microscopes use electrons to produce images. They have...
Cisco CCNP / BCMSN Exam Tutorial: Dynamic VLANs and VMPS
Knowledge of Dynamic VLANs and VMPS is important in your efforts to pass the BCMSN exam and earn your CCNP, and it’s also a great skill to have for your networking career.
As a CCNA and CCNP candidate, you know how...
There’s a storm brewing, and although we have only seen the first signs, she’s gonna be a whopper! I’m talking about what I call the “Wi-Fi Security Crisis”, and if you don’t know what it is, better read on…
Q: Would you let a terrorist walk in...
The advent of the modern Global Positioning System or GPS can most often be found on the dashboard of a car. So popular is this technologically advanced mapping system, that newer cars are even being designed with GPS included as a standard feature. But what many fail to realize is that GPS...
Cisco CCNP / BCMSN Exam Tutorial: Dynamic Trunking Protocol (DTP)
When you’re studying to pass the BCMSN exam on the way to earning your CCNP certification, you’re going to add to your CCNA knowledgebase every step of the way. Nowhere is that more than configuring a trunk...
When aspiring astronomers look for quality optics that will let them peer into the unknown reaches of void, Meade telescopes are an excellent choice. With a wide variety of telescopes, mounts, and filters available, Meade provides options for the backyard stargazer and the serious student alike....
Uninformed researchers of computer (computador) history would probably note the first computer in the mid 1930`s. In reality, this history dates nearly 2000 years ago with the invention of the abacus where the user programmed beads using formulated constructs.
Although many historians...
When we feel cognitive dissonance, we have to find a way to deal with the psychological tension. We have an arsenal of tools at our disposal to help us return to cognitive consistency.
Your favorite politician, the local mayor, for whom you campaigned and voted, is in trouble. You spent...
Cisco CCNP / BCMSN Exam Tutorial: Configuring PortFast And BPDU Guard
In your CCNA studies, you learned about PortFast and the trouble it can cause if configured on the wrong port! Suitable only for switch ports connected directly to a single host, PortFast allows a port running STP to...
Wireless: To Be, Or Not To Be? That Is The Question Facing Schools Across The Country.
There has been a lot of hype in the media about concerns wireless Internet connections (Wi-Fi) are harming children. But is there a basis to these concerns, or are these fears...
It’s really amazing that you can get the exact value listening to an audio book while doing your normal chores as you would reading it.
Certain experts even say information sinks in more when we are not paying direct attention to them.
But when did this audio book phenomenon...
Marriage is one of the most enjoyable but also one of the most painful experiences that people undergo. It carries with it the whiff of romance and eternal bliss, but sometimes you get a pack of thorns instead.
How Do You Ensure Your Marriage Is a Bed of Roses and not Thorns?
One of...