A telecommunication audit is a assessment of an organizations telecommunication environment. The purposes of a telecommunication audit are to ensure: Security Policy compliance Cost efficiency Service effectiveness Telecommunications support of business objectives A proper telecommunication audit should include all types of telecommunications: voice, video, and data. The audit should encompass all telecommunication equipment, services, policies, and expenses utilized by the organization. An audit begins with a policy assessment. Relevant policies are identified and analyzed to determine if they meet all application regulations and defined organizational goals. Of special interest at Read More

A Nook is an e-reader/tablet PC that Barnes & Noble produced. It can be used to read e-books from both Barnes & Noble and third party sources, browse the Internet, and even run third party applications. There are several different types of Nooks available that mimic other e-readers such as the Kindle, Sony Reader, and BeBook. While these different versions vary slightly in price, the primary question on most potential Nook users’ mind is, “How much do books cost on the Nook?”   Free Nook Books Although most e-books that Read More

Constructors can be used to initialize member objects as well as allocate memory. This can allow an object to use only that amount of memory that is required immediately. This memory allocation at run-time is also known as dynamic memory allocation. The new operator is used for this purpose. Sample Program The program below shows the use of new in constructors of a simple String class.   /* * Program to illustrate use of dynamic memory allocation * in constructors * http://www.byteguide.com */ #include #include class String { private: char Read More

Printer calibration helps the printer to replicate a more accurate copy of what is seen on a computer screen. Printer calibration is needed to ensure that the printed image comes out as colorful and vibrant as it was on the monitor. Without printer calibration, the printed images’ colors could easily come out faded, dull, or incorrect. The monitor that is being used to view the pre-printed image should also be adjusted to ensure the most accurate print-out possible. The printed colors may be incorrect for several different reasons: Color Reproduction Read More

A prepaid cell phone is one that allows users to pay in advance for their service without the commitment and penalties of a long term contract. While contract plans are still the most popular form of mobile phone service, prepaid cell phones have become very popular in recent years and have grown in use amidst rising contract prices. Most cell phone companies now provide prepaid cell phones and prepaid cell phones are even available in many convenience stores and gas stations. How It Works Prepaid cell phones are actually rather Read More

Windows users may encounter the following when trying to start the HP Solution Center: “The installation package for solution center cannot be found. Try the installation again by using a valid SolutionCenter.msi.” This error commonly occurs when the solution center software was installed from a downloaded file and is then unavailable to reinstall the HP Solution Center if required. It can also be triggered through Windows Operating System (OS) updates that are no longer fully compatible with the version of the HP software on the computer. At minimum, users may Read More

“cannot resolve symbol” means that the Java compiler cannot locate a symbol referenced in your Java source code. The causes for this common error include: A missing class file A faulty CLASSPATH A symbol name is mispelled or miscapitalized A data type is incorrect, misspelled, or miscapitalized A method is called with the wrong number or types of arguments An undeclared variable cannot resolve symbol errors can be very difficult to track down. Code carefully!

A Trivial File Transfer Protocol (TFTP) server is based on a simple Fire Transfer Protocol (FTP) that was first defined in 1980. TFTP books routers and other computers that do not have storage devices. It also transfers small files between two or more computer network hosts such as a transfer initiated on a remote X Window System terminal. TFTP servers are also based on the traditional EFTP protocol that was part of the PUP protocol tool suite and is normally one of the first protocols used on a new host Read More

Skype is an instant messaging software that the international community uses because of its vast collection of features and interactive social networking options. Although Skype was first introduced as a basic instant messaging software, it has included audio and video conversations to its tool set over recent years. Additionally, each user has a unique profile and can modify text via font options and emoticons while conducting audio and video conversations with the aid of a microphone and/or webcam.   What is Skype Video? Skype Video is a Skype feature that Read More

Common threats to DNS servers include: Denial-of-service (DoS) attacks: DoS attacks occur when DNS servers are flooded with recursive queries in an attempt to prevent the DNS server from servicing legitimate client requests for name resolution. A successful DoS attack can result in the unavailability of DNS services, and in the eventual shut down of the network. Footprinting: Footprinting occurs when an intruder intercepts DNS zone information. When the intruder has this information, the intruder is able to discover DNS domain names, computer names, and IP addresses which are being Read More