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HTML use hexadecimal numbers to express RGB color values. Hexadecimal numbers are a base-16 numbering system, so the numbers run from 0 through 9 and then A through F. when compared to a standard base-10 numbering system, hexadecimal looks strange because it includes letters in the numbering scheme.
Many people who work with computers have never learned binary or hexadecimal number systems. While we may not have to use these number systems often, it can be handy to know about them. Related Article Tags: , ,
To pass the CCNA exam, you've got to know all about MAC addresses. Learn how these addresses are built and used by switches on your way to the CCNA with Chris Bryant, CCIE #12933. Related Article Tags: , , , , , , , , , , , ,
Many have cursed their computer for taking things too literally! It's easy to blame the computer when something goes wrong.
When you're getting started on your CCNA, these terms can get pretty confusing. Learn how to keep them straight, along with other vital CCNA exam information, from Chris Bryant, CCIE #12933. Related Article Tags: , , , , , , , , , , , , , , , , , , , , , , ,
We looked at Number Systems and counting (see It's a Binary World - How Computers Count) last time. As a quick refresher, we saw that computers are made up of many units of 0 and 1, the binary system. 1 is the highest digit possible so numbers in the computer are stored as for example 1010 or 10 in decimal. We also saw that these binary numbers can be seen as octal (8) or hexadecimal (16) numbers - in this case 1010 becomes 15 octal, or A hex.
All routers attempt all four steps each time that the router is powered on or reloaded. The POST code and functions cannot be changed by the router administrator.
One of the hardest parts about getting started with Ipv6 is understanding the addressing scheme! Learn the basics of zero compression from Chris Bryant, CCIE #12933. Related Article Tags: , , , , , , , , , , , , , , , , , , , ,
Binary numbers can quickly be converted into octal numbers. You can express a binary number in octal in many less digits. Related Article Tags: , ,
An article about how to find wired and wireless network card MAC addresses. It also goes into details about the output of the "ipconfig /all" command and "arp" command. Related Article Tags: , , , , , ,
Another important HSRP skill is knowing how to change the Active router assignment. I'll show you how to do that, and how to configure HSRP interface tracking, in the next part of my CCNP / BCMSN exam tutorial! Related Article Tags: , , , , , , , , , , , ,
A couple of months ago I purchased my first wireless enabled laptop. As I switched it on and began setting it up I was shocked when I realized that my laptop had found and connected to my neighbours wireless modem and I was able to freely browse the internet and download data using his modem and internet connection. If I were a hacker it would not be difficult for me to hack in to his computer using this connection to his network. Related Article Tags: , , ,
You can avoid the worst case BSOD by taking some precautions. When you uninstall any program make sure you select do not delete shared DLL files in the settings. Install one of the powerful antiviruses in your system and regularly use registry cleaner capable of detecting DLL at startup. The operating system halts and diagnostic information is displayed on a blue screen. This is really a much more complicated problem to cope with. Related Article Tags: , , , ,
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