Ethernet is the most common LAN (Local Area Network) technology in use today. Xerox developed Ethernet in the 1970s, and became popular after Digital Equipment Corporation and Intel joined Xerox in developing the Ethernet standard in 1980. Ethernet was officially accepted as IEEE standard 802.3 in 1985. The term “Ethernet” is now used to refer …
Cryptanalysis is the study of analyzing information systems in order to “discover” or “crack” the hidden or secret aspects of those systems. More specifically, cryptanalysis is the study of breaching cryptographic security systems in order to obtain access to the information contained within encrypted messages without necessarily knowing the cryptographic key used to encrypt the …
Cloaking is a black hat SEO technique where one set of content is shown to human visitors and another set of content is shown to search engines. In cloaking, human visitors are shown the actual web page, but search engines are shown a web page which is full of spammy SEP techniques such as keyword …
In the following listings, "xxx" means that the same number is used as a constantly busy number in many different prefixes. In most of these, there are some exchanges that ring busy and some exchanges that are in normal use. ALWAYS test these numbers at least three times during normal business hours before using as …
Personal RFID tracking units are personal tracking units that depend on RFID or Radio Frequency Identification technology. Personal RFID tracking units allow users to identify and locate objects and individuals within a specific facility or area. Although personal RFID tracking units are not as popular or as common as other forms of personal tracking units …
Notepad is a great text writing program that is available on Windows operating systems. The user can hide Notepad depending on the version of windows being used. Finding Notepad through the Start Menu List To open notepad through the start menu, follow this process: Click Start (on Vista/Windows 7 it is a Windows Button) on …
A computer virus is designed to infect computer files through self-replication, and is able to infect other computers on its own. Viruses infect computers through boot sectors of portable drives, email attachments, other files, and by exploiting vulnerabilities in instant messaging and other real-time communication systems online. Not all computer viruses harm computers, but many …
The computer BIOS (Basic Input/Output System) is found on Windows computers. The BIOS is the first application launched during the computer’s boot process. The program is used to check for and initialize computer hardware during the start-up process prior to passing control of the computer to the operating system. Unlike the OS that is normally …
A hypervisor is a virtualization technique that runs multiple operating systems on the device. While non-hypervisor virtualization techniques run multiple operating systems on domestic computers and hand-held devices, hypervisors are used exclusively on devices whose sole task is to run multiple guest operating systems for commercial or industrial purposes. Hypervisors are used in gaming technologies, …
The SNMP (Simple Network Management Protocol) allows network management to communicate with different network components. Because of this, it is important for all network hardware to be equipped with an SNMP agent that allows for it to be communicated back to network management. Once the network is connected, the elements are able to send messages …