Moore’s Law: The Patterns of Progress – Computer Science Zone

A career in computer science or information technology is one of the surest bets in higher education. Nearly every job in the computer industry is booming and has an excellent career outlook. But navigating the process of obtaining a computer science or IT education, finding the right internships, and landing your dream job can be a challenging endeavor. That’s where Computer Science Zone comes in. Welcome to the premier guide to obtaining a traditional or online Computer Science degree.

Moore’s Law

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http://tcatshelbyville.edu/full-time-programs/computer-information-technology

2005 Computer Forensics Award
2011 Computerworld Laureate (Honors Program)
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2014 CTE: Excellence in Action Award

Windows 10 Technical Preview: Install As A Dual Boot Configuration OR Install In A Virtual Box

TCAT Shelbyville IT Department:

We featured Wiindows 10 Technical Preview in VMWare, this excellent review shows a dual boot configuration / VirtualBox. Another excellent way to test Microsoft’s future operating system. We again will feature this in our classroom. Thanks Rick

Originally posted on What's On My PC:

If you are looking for a method to “test and try” the Windows 10 Technical Preview and you do not have a test PC available; I found detailed instructions, from two very reputable sources, for two common install options. Even though these options are commonly used, it always the general-rule-of-thumb to have backups of your personal files and your hard drive readily available in the event trouble arises.

OPTION #1 (provided by the How To Geek):  How to Dual-Boot Windows 10 with Windows 7 or 8 – You probably shouldn’t install Windows 10 on your primary PC. But, if you are going to, you should at least install it in a dual-boot configuration. You can then reboot to switch between your installed versions of Windows. Be sure you have backups of your important files before doing this. You shouldn’t lose your files if you follow this process, but a mistake…

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Malware Herd Protection For Your PC

TCAT Shelbyville IT Department:

Excellent find…Rick you are awesome!

Originally posted on What's On My PC:

What is that old saying, “there is strength in numbers?”… Malware is the leading cause to computer problems today that is also criminal in nature. What I have discovered over the years that no single anti-malware or anti-virus program can give you protection 100 percent of the time.

This is where the cloud sourced program called herdProtect can help, as your second line of defense against malware, by providing strength in numbers. herdProtect utilizes a ‘herd’ of multiple online anti-malware engines (68 engines to be exact) to guarantee the widest coverage and the earliest possible detection. As a second line of defense anti-malware solution, herdProtect is designed to run with any existing anti-virus program already installed on a user’s PC. herdProtect is a free service to help user’s find and remove malicious software; and, is an excellent resource to run, after an infection, when you think you have…

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Samsung Electronics Says It’s Developed Faster Wi-Fi Technology – Bloomberg

2.4 Ghz? 5 Ghz? How about 60 Ghz?

Samsung Electronics Co. (005930) said it has developed a Wi-Fi technology that can increase data transmission speeds by five times the maximum rate possible with existing consumer electronics devices.

The 60 GHz Wi-Fi technology will enable a 1 gigabyte movie to be transferred between devices in less than three seconds…read more

Using a GPS to perform a Wi-Fi survey

It is important to perform a wi-fi survey so that you can determine not only the perfect place to locate your access point or bridge but to gain an understanding of the channel co-existence challenge you may face.  With wireless access points in surrounding neighborhoods and businesses, you will need to  perform a survey by walking around and mapping out the BSAs (Basic Service Area) of wireless that surrounds you and your organization.

Below is an example of our school’s perimeter.  Matt, Chris and James, students in the Computer Information Technology, class performed a survey using a Microsoft GPS and Vistumbler.  This survey revealed access points and their channels of current wireless at our institution and  includes APs in surrounding businesses and neighborhoods.  These were mapped using Google Earth after exporting their KML file from Vistumbler.

This type of survey allows IT professionals to analyze data exported to ensure the correct channels can be used at their organization.

Miller Goodroe Felts

After exporting the wireless information, you can analyze each access point or wireless device by clicking on it.  Below is an example of the information exported into Google Earth.   Each device shows SSID, Network Type, Mac Address, Channel, Security, Encryption Type, Data Rates, Latitude, Longitude and Manufacturer information.   Analyst using this information can also determine the best placement of wireless devices along with channel information.

ESSID Expanded

Channel co-existence is when access points share channels that are very close to one another.

802.11 wireless on 2.4 Ghz has three non-overlapping channels.  These channels are 1, 6 and 11.  The closer channels are, the more likely interference will take place.  With the amount of wi-fi in use today, IT professionals have to chose between 2.4 Ghz and 5 Ghz and and try to select channels that are not in use if possible.   Professional access points and bridges can also adjust power as necessary.   A dense population can make this very challenging.

If you look at the students’ survey by zooming out to see how many access points can be seen, this is what you are looking at!  Now you can see why site surveys are important at your organization.

Exploded

In addition to this survey, a secondary survey using a spectrum analyzer is very important to search for interference from other sources.  (See our review of the Airview Spectrum Analyzer)

analyzer-software

Channel information (Chart from Wikipedia)

NonOverlappingChannels2.4GHzWLAN-en.svg

Here’s another look at a wireless survey showing vertical lines and signal strength.  (James M. KML survey)

Another view James Miller KML

Add GeGeek Toolkit to Hiren’s CD/DVD for the ultimate troubleshooting tool

One of the best sites on the web is GeGeek.  GeGeek has over 300 tools (freeware) that you can download for troubleshooting any computer.   How can it possibly get more powerful?

Use Rufus USB to create a bootable ISO of Hiren’s CD/DVD’s ISO.  See our other article – link.  Once you create the bootable flash drive, copy the GEGeek folder to

Now when booting to your USB drive, you can boot into Windows XP mini and navigate to the flash drive.  Navigate further into the Prorams folder and then into the GEgeek folder.  You can now use any tool you need to troubleshoot or diagnose your computer.

GEGeek Toolkit