Screen captures are, literally, ‘captures’ of the images on a computer’s screen. This is necessary when one needs troubleshooting help for an unexpected system error, in which case it would help if an image of the error message can be procured and sent to the technical support personnel. It can also be used to capture images embedded in web pages or PDF files. Taking Screen Captures To take screen captures, one has to use the “Print Screen” (or oft-abbreviated ‘PrtSc’ button that is usually found at the upper right portion Read More

Active Directory (AD) is a structure used on computers and servers running the Microsoft Windows operating system (OS). AD is used to store network, domain, and user information and was originally created by Microsoft in 1996. It was first deployed on Microsoft Windows 2000. Active directories provide a number of functions to include providing information regarding objects optimized for fast access and / or retrieval. This allows administrators to setup security, push computer updates, and acts as a hierarchical structure. The structure is normally configured in three categories to include: Read More

Typing is a must-have skill that we should all develop. It is an essential skill in most businesses today, especially if you are looking for a white collar job.  Whether you are a student, a casual computer user whose need to type starts and ends with keying out a few emails and chat messages, or if your job profile requires you to type long hours on the keyboard, picking up good typing skills can go a long way in simplifying the task at hand.  Most people do not have the Read More

NWLink Overview NWLink IPX/SPX is the Microsoft implementation of Novell’s NetWare Internetwork Packet Exchange/Sequenced Packet Exchange (IPX/SPX) protocol. NWLink IPX/SPX is simply called NWLink. NWLink is used in Novell NetWare, and can be considered IPX for Windows. NWLink is an IPX/SPX compatible transport protocol that was developed to enable Windows 2000 computers to communicate with NetWare services. It is therefore used when clients running Microsoft operating systems (OSs) need to access resources on NetWare servers. It is also used where clients running NetWare need to access resources on computers running Read More

A projector lamp is used to transfer an image from a multimedia projector onto a larger screen. Earlier halogen bulbs were used for many years for projection purposes, but were discontinued as halogen produced a yellow tone on the images. A projector lamp relies on an intense light bulb, called a metal halide bulb, to produce a brilliant white light. The light bulb shines onto a number of small mirrors inside the machine and transfers the image through the air and onto the screen. These machines can project slides, films, Read More

Understanding the Limitations of IPv4 Before moving on the to an in-depth discussion of IPv6, lets first look at the limitations of IPv4: The IPv4 addresses are somewhat scarce, even though it allows for 4,294,967,296 possible addresses. Because of this limitation, organizations are forced to utilize Network Address Translator (NAT) to map a public IP address to several private IP addresses. NAT typically creates performance and application bottlenecks. The increase in devices that are connected to the Internet would lead to the depletion of IPv4 address space. There is a Read More