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Tthe kernel is the core piece of most operating systems. It is a piece of software responsible for the communication between hardware and software components.

As a basic component of an operating system, a kernel provides abstraction layers for hardware, especially for memory, processors and communication between hardware and software. It also provides software facilities such as process abstractions and makes interprocess communication easier.

What Is WiMAX?

Next-Generation Wireless Network Will Be Faster, Broader

Source: HowStuffWorks.com and WXII12.com

Think about how you access the Internet today. There are basically three different options:
Broadband access -- In your home, you have either a DSL or cable modem. At the office, your company may be using a T1 or a T3 line.

Wi-Fi access - In your home, you may have set up a Wi-Fi router that lets you surf the Web while you lounge on the deck with your laptop. On the road, you can find Wi-Fi hot spots in restaurants, hotels, coffee shops and libraries.

 

Don't Know How To Sell On eBay?

There's plenty of money to be made on eBay: $28,000 for a 10-year-old grilled cheese sandwich featuring an image of the Virgin Mary, or even $4,000 for advertising space on a pregnant woman's stomach.

Source: WNBC News

eBay is where Stella Kleiman makes her living, albeit with much less exotic wares. It all started with a simple move.

"I moved to New York from San Francisco with my husband. We had a smaller apartment and I said, 'We have to get rid of this stuff,'" Kleiman said.

How Hard Drives Work

Magnetic Storage Much Greater On Platters

Source: WXII12.com & HowStuffWorks.com

Nearly every desktop computer and server in use today contains one or more hard-disk drives. Every mainframe and supercomputer is normally connected to hundreds of them. You can even find VCR-type devices and camcorders that use hard disks instead of tape.

These millions of hard disks do one thing well: They store changing digital information in a relatively permanent form. They give computers the ability to remember things when the power goes out.

Teaching Students to Swim in the Online Sea

INFORMATION literacy seems to be a phrase whose time has come.

By GEOFFREY NUNBERG, New York Times

Last month, the Educational Testing Service announced that it had developed a test to measure students' ability to evaluate online material. That suggested an official recognition that the millions spent to wire schools and universities is of little use unless students know how to retrieve useful information from the oceans of sludge on the Web.

What's A Virus, How Does It Spread?

Computer viruses are mysterious and grab our attention. On the one hand, viruses show us how vulnerable we are.

Source: Wral & HowStuffWorks.com

A properly engineered virus can have an amazing effect on the worldwide Internet. On the other hand, they show how sophisticated and interconnected human beings have become.

For example, two that made big news were the MSBlaster worm and the SoBig virus.

Speed up your hard drive with hdparm

This tip tells you how to use the hdparm tool to customize your IDE hard drive device for better performance.

By Vincent Danen, TechRepublic

These days, most hard drives are of the ATA100 or ATA133 specification. The theoretical transfer rate of an ATA100 drive is 100 MBps; an ATA133 drive's theoretical transfer rate is 133 MBps. Of course, these are theoretical rates.

Many Linux systems use conservative defaults that could be slowing down your system. At the very least, these defaults could be preventing your system from reaching the maximum speeds that your hardware allows.

 

Protect your router from a dictionary DoS attack

You may not realize it, but a dictionary denial of service (DoS) attack on Telnet, SSH, or HTTP ports could hit your Cisco router.

By David Davis, TechRepublic

Of course, having these ports open to a public network is much more dangerous than leaving them open on a private network.

Windows XP Embedded Language Support Overview

Learn how to add the necessary language support infrastructure to your run-time image, including the steps involved in extending that infrastructure and adding MUI support.

Source: MSDN Home

As is the case with Windows XP Professional, the Unicode-based operating system core and the Win32 API in Windows XP Embedded enable non-English applications to run on the English version of the operating system.

Google hacking for beginners

Exactly how is easy is Google hacking, how can you protect yourself from it and is it really that much of an issue anyway?

By Ong Boon Kiat, CNETAsia

It was easy, and all done with, well, Google. As Google hackers know, what I did was to use Google to look for information residing in other people's Web-connected servers -- and machines connected to those servers. Stuff that I'm not supposed to see.

So how did I fare?

Can IP Addresses be Determined From MAC Addresses?

A MAC address represents the physical identifier of a network adapter, while the IP address represents a logical device address on Internet Protocol networks.

By Bradley Mitchell, About.com

A built-in feature of IP, Address Resolution Protocol (ARP) translates IP addresses to MAC addresses. ARP was not designed to translate addresses in the other direction, however. There is no universal mechanism to determine an IP address given a known MAC address, although it can be done in certain specific situations.

New Computer? 6 Steps to Safer Surfing

To see the e-mail I get every day from readers about security issues is to develop a deep discomfort with the state of computing today.

By Rob Pegoraro, Washington Post

Keeping a Windows PC safe can demand a high degree of vigilance -- if cars needed the same constant care and feeding, the Beltway would revert to a country byway.

REVIEW: How to release books into the wild

HALIFAX, Nova Scotia - Each Christmas, books are among the most popular gifts both to give and receive.

By JIM REGAN, CSmonitor.com & Bakersfield.com

For the giver, every form of media outlet is featuring 'recommended' and 'best of' lists for the year, so there is no shortage of helpful suggestions. (And, for some of us, there is the added attraction that a book is something we can actually wrap - without the finished product looking like the aftermath of a life-or-death struggle between Hallmark and Scotch tape.)

Setting up Intel's Matrix RAID for the ICH6R

By Loyd Case, ExtremeTECH

To RAID or Not to RAID?

Personal RAID storage is a hot topic - of increased risk: If one of the two drives fails, you lose your data. RAID 1 offers redundancy and protection, but you only get half the capacity of the two combined drives.

The top 20 IT mistakes to avoid

InfoWorld’s CTO tells tales from the trenches, flagging the most common IT mistakes that can ruin peace of mind and even careers

By Chad Dickerson, InfoWorld

We all like to think we learn from mistakes, whether our own or others’. So in theory, the more serious bloopers you know about, the less likely you are to be under the bright light of interrogation, explaining how you managed to screw up big-time.

How to fine tune, fix your hard drive

Get the little people to do it

By The Spinola Twins, The Inquirer

WHY SPEND hundreds on getting an "expert" to tune or fix your hard drive when you can do it with an army of tiny slaves?

You will remember how the irrepressible army of the Lego men could help you to build your PC kit, here.

Detecting Rootkits And Kernel-level Compromises In Linux

By Mariusz Burdach, SecurityFocus

Often known as a rootkit, this stealthy type of malware gets installed in the kernel of an operating system and requires special techniques by Incident handlers and Linux system administrators to be detected.

In this article we will make use of just one tool, gdb, the GNU debugger, to detect whether a Linux operating system has been compromised.

Windows v Linux security: the real facts

Report Considering the publicity that has surrounded - and, despite super new security-focused Service Packs, continues to surround - Windows security issues, Microsoft's determination to demonstrate that Linux is less secure than Windows shows a certain chutzpah.

By John Lettice, The Rgister

The company has however had some support here; Forrester, for example, provides some numbers that can be used to support the contention that Microsoft flaws are less severe, less numerous and fixed faster. And although there's a general readiness among users to believe that Windows is a security disaster area, there's also a reasonable amount of support for the view that Linux would get just as many security issues if it had anything like Windows' user base.

Choosing and Implementing Linux

On October 18th at 2 p.m. EDT, eWEEK.com's Steven Vaughan-Nichols joins a panel of Linux experts for an eduational eSeminar that will help you make the right choice.

Source: eWEEK

Deciding which Linux operating system will best suite your business needs can be a daunting task. The proliferation and security of Linux combined with the major cost benefits makes it an issue few IT managers can avoid to look at closely.

How to Protect Yourself From Vandals, Viruses If You Use Windows

Source: WALTER S. MOSSBERG, WSJ.WS

If you use a Windows personal computer to access the Internet, your personal files, your privacy and your security are all in jeopardy.

An international criminal class of virus writers, hackers, digital vandals and sleazy businesspeople wakes up every day planning to attack your PC.

How to Detect XP SP2 With a Web Server

By Mark Joseph Edwards, Windows IT Pro

Your Web server log can reveal which users visiting your sites are using Windows XP with Service Pack 2 (SP2) installed.

In the Microsoft Internet Explorer (IE) team's blog, IE Development Manager Bruce Morgan said that " we know from past experience that changing the version number can have a huge impact on site and application compatibility.

Developing Office 2003 solutions with .NET

By Richard Mansfield, Builder.com

Getting Office applications to talk to each other used to mean writing some VBA code.

But developers should start looking to the future of Microsoft programming, Visual Studio .NET. We'll get you started with this simple VB.NET application.

The usual way to get Office applications to talk to each other -and to automate their interaction- is via the built-in VBA language.

Ethernet Networking: What is Gigabit Ethernet?

By Bradley Mitchell, About.com

Gigabit Ethernet is an extension to the family of Ethernet computer networking and communication standards.

The Gigabit Ethernet standard supports a theoretical maximum data rate of 1000 Mbps.

At one time, it was believed that achieving Gigabit speeds with Ethernet required fiber optic or other special cables.

The Daily Database Build

Continuous integration is a popular concept in software development right now.

By Graz, SQL Team

One of the key components of this is making sure you always have a clean build of your program. This can also be applied to database development.