The way a switch learns Ethernet (MAC) addresses is by inspecting the Ethernet frame and recording the source MAC address in a dynamic table. The switch will also associate a learned MAC address with a port. It can then make intelligent forwarding decisions based on the destination MAC address. This white paper illustrates the process. 

Programming is a journey between the real world and a computer. This article explains why object orientation is currently the best way we have of making the journey. 

Discover the ten simple steps SOHO users can take to secure their wireless networks. 

Try this free trial download to learn about a technology that delivers pure browser-based access to business-critical Windows resources from any PC, Mac, Linux, Chromebook, iPad, Android, and other HTML5-enabled device. 

In this white paper, we'll take a look at access control lists, often referred to as access lists or ACLs (sometimes pronounced "ackels"). 

In this week’s Computer Weekly, we look at the importance of IT strategy when budgets are under pressure. The first part of our Buyer’s Guide to virtualisation examines the barriers preventing many organisations from adopting the technology; and Transport for London’s CIO talks about how IT helps avoid Olympic travel chaos. Download the issue now. 

Service providers and network equipment manufacturers are adding automation to their pre-production testing process for a combination of reasons. This Market Snapshot will focus on the need for test automation of networks and connected devices, identify a path to automation adoption and provide an overview of the market. 

Although pay levels are unlikely ever again torise as fast as they did at the end of the 1990s when fears about the “millennium bug” stoked thefires of an already over-heated job market – or to fall as fast as they did when the bug failed to bite– employers are acutely aware of the need to keep a close eye on short- and long-term pay trends. 

In this week’s Computer Weekly, we examine exclusive research into the investment priorities of UK IT decision-makers, which shows virtualisation, Windows 7 and security as the top areas for spending this year. We analyse the changing nature of database architecture; and the BBC’s Chief Technology Officer talks about IT plans for the broadcaster. 

In this week’s Computer Weekly, we mark the 10th anniversary of Microsoft’s Bill Gates announcing the Trustworthy Computing initiative, and ask if it has made IT more secure. We look at what Oracle’s latest developments mean for its software users running rivals’ servers, and conclude our Buyer’s Guide to IT consumerisation. Download the issue now. 

In this week’s issue of Computer Weekly, we look at the key trends and technologies that will be on IT leaders’ agenda in 2012. Our first Buyer’s Guide of the year examines how IT consumerisation will affect business technology; and Home Office IT director Denise McDonagh tells us why government IT isn’t working. Download the new issue now. 

In this week's Computer Weekly, we examine the economic benefits of plans to release more government data for wider re-use by software developers. We announce the winners of our Social Media Awards, and hear what the IT industry thinks of the new UK cyber security strategy. Download the new issue now. 

In this week's Computer Weekly, we hear from Visa Europe CIO Steve Chambers on the technology behind the credit card transactions that retailers rely on. We examine the challenges facing the government's G-Cloud project; and we ask how Microsoft will cope when customers no longer want to purchase software licences. Download the new issue now.