Urban/Gangsta nickname for someone from the streets
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This term refers to a golf equipment brand, as well as the sound made by striking your glass with a spoon at the dinner table. However, it also has a computer-related meaning. A ping is a test to see if a system on the Internet is working. Pinging a server tests and records the response time of the server. Pinging multiple computers can be helpful in finding Internet bottlenecks, so that data transfer paths can be rerouted a more efficient way. A good way to make sure you do not get disconnected from your dial-up ISP for being idle is to send a ping every 5 minutes or so. There are a number of shareware Ping programs that will do this for you.
A computer peripheral is any external device that provides input and output for the computer. For example, a keyboard and mouse are input peripherals, while a monitor and printer are output peripherals. Computer peripherals, or peripheral devices, are sometimes called I/O devices because they provide input and output for the computer. Some peripherals, such as external hard drives, provide both input and output for the computer.
For an extended list of various peripheral devices, view this Help Center article.
A password is a string of characters used for authenticating a user on a computer system. For example, you may have an account on your computer that requires you to log in. In order to successfully access your account, you must provide a valid username and password. This combination is often referred to as a login. While usernames are generally public information, passwords are private to each user.
Most passwords are comprised of several characters, which can typically include letters, numbers, and most symbols, but not spaces. While it is good to choose a password that is easy to remember, you should not make it so simple that others can guess it. The most secure passwords use a combination of letters and numbers and do not contain actual words.
Page orientation is the direction in which a document is displayed or printed. The two basic types of page orientation are portrait (vertical) and landscape (horizontal). Most monitors have a landscape display, while most documents are printed in portrait mode.
Before printing a document, you may be able to change the page orientation by selecting Page Setup... from the programs File menu. The default orientation is typically portrait, but you can change it to landscape if you want the width to be longer than the height. This may be useful for printing signs, cards, or other documents that require a wide display.
When a software program is open source, it means the programs source code is freely available to the public. Unlike commercial software, open source programs can be modified and distributed by anyone and are often developed as a community rather than by a single organization. For this reason, the phrase open source community is commonly used to describe the developer of open source software development projects.
Since open source software is free to use, there is typically no technical support included with the software. Instead, users may need to rely on Web forums and user discussions to report bugs or get answers to their questions. Fortunately, the most popular open source programs have an abundance of helpful resources available on the Web. Some of the most well-known open source projects include the Linux operating system, the Mozilla Firefox Web browser, and the OpenOffice.org productivity suite. Each of these projects have been developed by a community of developers and have gained levels of popularity that rival their commercial counterparts.
Open source software can be a cost-effective way to run many types of programs on your computer. Just remember that since the programs are not backed by a commercial company, if you have problems using the software, you will most likely not be able to obtain technical support from the developer. Of course, if you like to figure things out on your own or participate in online discussions, open source software may be just right for you.
NoSQL is a non-relational database that stores and accesses data using key-values. Instead of storing data in rows and columns like a traditional database, a NoSQL DBMS stores each item individually with a unique key. Additionally, a NoSQL database does not require a structured schema that defines each table and the related columns. This provides a much more flexible approach to storing data than a relational database.
While relational databases (like MySQL) are ideal for storing structured data, their rigid structure makes it difficult to add new fields and quickly scale the database. NoSQL provides an unstructured or semi-structured approach that is ideal for capturing and storing user generated content (UGC). This may include text, images, audio files, videos, click streams, tweets, or other data. While relational databases often become slower and more inefficient as they grow, NoSQL databases are highly scalable. In fact, you can add thousands or hundreds of thousands of new records to a NoSQL database with a minimal decrease in performance.
Because of NoSQLs flexibility and scalability, many large businesses and organizations have begun using NoSQL databases to store user data. They are especially common in cloud computing applications and have become a most popular storage solution for big data.
NOTE: NoSQL is sometimes referred to as Not only SQL, though it is not the official meaning of the term.
Any system or device connected to a network is also called a node. For example, if a network connects a file server, five computers, and two printers, there are eight nodes on the network. Each device on the network has a network address, such as a MAC address, which uniquely identifies each device. This helps keep track of where data is being transferred to and from on the network.
A node can also refer to a leaf, which is a folder or file on your hard disk. In physics, a node, or nodal point, is a point of minimum displacement or where multiple waves converge, creating a net amplitude of zero.
A minisite, sometimes called a microsite, is a small website dedicated to a specific topic. Most minisites contain around five pages, though a minisite may be as small as a single webpage or as large as 20 pages.
Minisites are often related to larger websites. For example, a sporting goods website may have several associated minisites. Each of these small websites would be dedicated to a specific related topic, such as running shoes, soccer clothing, or hockey equipment. The purpose of these minisites would be to drive traffic to the larger sporting goods website.
While minisites are created for a number of reasons, the most common is e-commerce. For example, affiliates often build minisites that drive traffic to large retailers in order to generate commissions. Some online retailers may even create their own minisites to broaden their reach. If a publisher is able to get several sites ranked highly in search engines, it may result in more traffic and therefore more sales.
While creating minisites may seem like a good strategy for increasing Web traffic, small websites with limited content typically do not rank well in search engines. Therefore, many companies have found that it is more productive to add content to the main site rather than spread it out across multiple sites.
NOTE: Microsite and minisite are often used synonymously. However, a microsite may refer specifically to a minisite that only contains one page.
A microkernel is a minimalistic kernel designed to be as small as possible. It contains only the basic code needed to communicate with hardware and load an operating system.
Most modern kernels, sometimes called monolithic kernels, contain several million lines of code. For example, the Linux 3.0 kernel includes over 15 million lines. Microkernels, on the other hand, generally contain less than 10,000 lines of code. They are able to maintain a small size by loading most system processes in the user mode rather than the kernel itself.
A monolithic kernel may include device drivers, file system support, and inter-process communication (IPC) protocols for applications. A microkernel only includes basic system IPC protocols and memory management functions. Everything else is loaded in user mode (when a user logs on). This keeps the kernel size small and also provides a modular type of OS since custom drivers and file systems can be loaded by the kernel.
Microkernels were popular in the 1980s because of the memory and storage limitations of early computer systems. While they are still used for some server OSes, most major operating systems, such as Windows and OS X, use monolithic kernels.