802.1Q is also known as IEEE 802.1Q or VLAN tagging. It defines a virtual local area network. It is a protocol that allows virtual LANs to communicate with one another using a 3-layered router. It was developed as a part of IEEE 802. Why Was The 802.1Q Standard Developed? Large networks use up a lot …
A default keychain binds to an Administrator password upon creation and will continue to update when the Administrator password is updated via the Accounts menu. When someone forgets his/her password and is forced to utilize other means to reset it (See FAQ entitled: How do I reset a Mac OS X System Administrator (root) Password?), …
HyperTerminal is an application that connects a computer to other remote systems. These systems include other computers, bulletin board systems, servers, Telnet sites, and online services. However, a modem, an Ethernet connection, or a null modem cable is needed before HyperTerminal can be used. Menus, buttons, icons, and messages can be found within HyperTerminal’s user …
DES (Data Encryption Standard) is a commonly used method for encrypting data using a secret or private key. The strength of the DES encryption standard was previously considered to be strong enough that the United States government placed restrictions on the export of the technology to other countries. Conceptually, there are more than 72 quadrillion …
A dielectric is a material that restricts the flow of current. Dielectrics are defined by their dielectric constant, current leakage, and breakdown voltage. They are mainly used in capacitors, allowing charge to build up on the conductive plates. An insulator is a dielectric than can withstand a high electric field without letting current flow through …
Overclocking is the process making a computer component run at a higher speed than that specified by the manufacturer. The components that can be overclocked include the CPU, the memory and the video cards. Although there may be many different reasons for overclocking, the most common reason is to increase hardware performance. For example the …
File and disk fragmentation usually causes problems in large networked companies where many people simultaneously save, retrieve and delete their work on a company’s servers. In an ideal scenario, people will be ‘lining up’ to use the company’s servers, allowing data management (especially storage and retrieval) to proceed in an orderly, logical, and sequential manner. …
Remote Access and VPN Server Security Issues Remote Access Servers (RAS) provides access to the network for remote users. The different types of remote access connections are Dial-in remote access, VPN remote access, and Wireless remote access. Dial-in remote access uses modems, servers running the Routing and Remote Access (RRAS) service, and the Point-to-Point (PPP) …
ITIL is an acronym for Information Technology Infrastructure Library. ITIL are a series of books and training manuals that outline and explain the practices that are the most beneficial to IT services (usually manager focused). The goal of ITIL is for managers to have extremely high standards in IT value, as well as high financial …