When you think of the Internet and communication protocols, you most likely think of TCP/IP as the default. This is true now, and was true when the "Internet" was still under the control of DARPA and used mainly between government installations and institutions of higher education. But, there was a time in the mid-1980s to the mid-1990s that another protocol was used heavily: IPX/SPX. Novell's NetWare was mainly responsible for the rise and acceptance of IPX/SPX during this period. IPX/SPX was originally derived from Xerox Network Systems' IDP and SPP protocol. With the release of NetWare 5.x, IPX/SPX fell from use as TCP/IP became the favored protocol used.
One interesting facet of the IT industry is the need to learn new skills on a continual basis. New technologies are released all the time, and new operating systems seem to roll off the factory floor every 18 months or so. That means that IT professionals must continuously update their skills or end up becoming redundant.
This slideshow features 10 tech skills, identified by Randy Muller, MCT, MCSE, MCSA, MCDST and Global Knowledge, as heading the way of the dinosaur.