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What Does Small Form-Factor Pluggable Transceiver (SFP) Mean? A small form-factor pluggable (SFP) transceiver is a compact, hot-swappable, input/output transceiver used in data communication and telecommunications networks. SFP interfaces between communication devices like switches, routers and fiber optic cables, and performs conversions between optical and electrical signals. SFP transceivers support communications standards including synchronous optical networking (SONET)/synchronous digital hierarchy (SDH), gigabit ethernet and fiber channel. They also allow the transport of fast Ethernet and gigabit Ethernet LAN packets over time-division-multiplexing-based WANs, as well as the transmission of E1/T1 streams over packet-switched networks....

What Does Social Platform Mean? A social platform is a web-based technology that enables the development, deployment and management of social media solutions and services. It provides the ability to create social media websites and services with complete social media network functionality. Techopedia Explains Social Platform A social platform exhibits a social media network’s technological and user-specific characteristics. Technologically, a social platform provides markup language for creating native applications, an application programming interface (API) for third-party application integration and a backend admin console for managing the entire user base and preferences....

What Does Standalone Server Mean? A standalone server is a server that runs alone and is not a part of a group. In fact, in the context of Microsoft Windows networks, a standalone server is one that does not belong to or is not governed by a Windows domain. This kind of server is not a domain member and functions more as a workgroup server, so its use makes more sense in local settings where complex security and authentication may not be required....

What Does Initialization Vector Mean? An initialization vector is a random number used in combination with a secret key as a means to encrypt data. This number is sometimes referred to as a nonce, or “number occuring once,” as an encryption program uses it only once per session. Techopedia Explains Initialization Vector An initialization vector is used to avoid repetition during the data encryption process, making it impossible for hackers who use dictionary attack to decrypt the exchanged encrypted message by discovering a pattern....

What Does Integer (INT) Mean? An integer, in the context of computer programming, is a data type used to represent real numbers that do not have fractional values. Techopedia Explains Integer (INT) The use of integers as variables supports programming in various ways. For instance, a common strategy is to create an integer variable and store some value in it that will influence computations or calculations made within the program. Examples include primitive instances of code for counters, amortization schedules, calendars, etc....

What Does Clickjack Attack Mean? A clickjack attack is a malicious technique used by an attacker to record the infected user’s clicks on the Internet. This can be used to direct traffic to a specific site or to make a user like or accept a Facebook application. More nefarious purposes might be to collect sensitive information saved on a browser, such as passwords, or to install malicious content.This type of attack is also known as clickjacking or UI readdressing....

What Does Computer-Aided Engineering (CAE) Mean? Computer-aided engineering (CAE) is the process of solving engineering problems through the use of sophisticated, interactive graphical software. Techopedia Explains Computer-Aided Engineering (CAE) A CAE program is a mathematical model written in a programming language using a set of algortihms that define the manufacturing processes.

What Does Demo Mode Mean? Demo mode is short for demonstration mode, and is a feature that is often found in consumer electronics. The main purpose of the demo mode is to demonstrate the features that the device has. It further builds the faith of the customer in the product and works as an in-store advertising method. Demo mode is also known as floor mode or kiosk mode. Techopedia Explains Demo Mode Demo mode can be easily accessed by pressing a few combinations of keys or by launching a program....

What Does DllImport Attribute Mean? DllImport Attribute is a declarative tag used in C# to mark a class method as being defined in an external dynamic-link library (DLL) rather than in any .NET assembly. DllImport attribute is used at run time to call a function exported in an external DLL implemented with unmanaged code that is executed outside the control of common language runtime (CLR). It is also used to specify other information needed while calling the function such as calling convention, type of conversion of parameters passed between managed and unmanaged code, etc....

What Does DomainKeys Identified Mail (DKIM) Mean? DomainKeys Identified Mail (DKIM) is a system for authenticating email that works with modern Message Transfer Agent (MTA) systems. This resource was created to help fight spam, and uses a digital signature to help email recipients determine whether an email is legitimate. Techopedia Explains DomainKeys Identified Mail (DKIM) The digital signature used in DKIM provides an additional way to tell whether an email is forged....

What Does Dublin Core (DC) Mean? Dublin Core (DC) is an improved digital cataloging system for making search engines much more accurate and efficient. The schema for Dublin Core has many terms for describing resources such as web pages and media like video and images. It also has data regarding physical objects such as CDs, books and even works of art. The main objective of this system is to create a powerful and accommodating catalog involving all web objects....

What Does Fixed Wireless Access (FWA) Mean? Fixed wireless access (FWA) is an alternative way for an Internet Service Provider (ISP) to provide small businesses and homes with last mile connectivity. Techopedia Explains Fixed Wireless Access (FWA) Fixed wireless access can be used to help two fixed wired locations to connect. Traditionally, enterprises used leased lines or cables to connect two different locations. FWA can be a simpler alternative because it uses radio waves to connect the two locations....

What Does Functional Dependency Mean? Functional dependency is a relationship that exists when one attribute uniquely determines another attribute. Techopedia Explains Functional Dependency A functional dependency is trivial if Y is a subset of X. In a table with the attributes of employee name and Social Security number (SSN), employee name is functionally dependent on SSN because the SSN is unique for individual names. An SSN identifies the employee specifically, but an employee name cannot distinguish the SSN because more than one employee could have the same name....

What Does Hallway Usability Testing Mean? Hallway usability testing is a technique and a principle in usability testing wherein random individuals are used to test software products and interfaces. This is in contrast to choosing individuals based on particular skills they may have. Techopedia Explains Hallway Usability Testing The idea behind hallway usability testing began as an alternative to hiring trained or certified personnel to test a particular software or technology product....

What Does IEEE 802.11x Mean? 802.11x is generic term to refer to the IEEE 802.11 standard for defining communication over a wireless LAN (WLAN). 802.11, commonly known as Wi-Fi, specifies an over-the-air interface between a wireless client and a base station or between two wireless clients. These standards are used to implement WLAN communication in 2.4, 3.6 and 5 GHz frequency bands. The term is not officially used or defined. Rather, it refers to the common flavors of Wi-Fi, most notably 802....

What Does Linux Recovery Mean? Linux recovery refers to the set of methods and procedures that enables the restoration of operations on a Linux system after it stops working normally. It is a type of system or operating system recovery procedure that is developed specifically for the Linux family of operating systems. Techopedia Explains Linux Recovery Linux recovery is typically required when the operating system crashes or due to a corrupted system boot problem, data deletion, virus outbreak or any similar event that halts or affects the performance of the operating system....

What Does Server Sprawl Mean? Server sprawl occurs when one or more servers within a data center are underused in the sense that they aren’t being used up to their base capacity. As a concept, server sprawl defines the amount of computing, space, power and cooling waste within a data center’s cluster of servers. Techopedia Explains Server Sprawl Server sprawl typically exists when an organization houses more servers than it should based on its current and predicted requirements....

What Does SPAU Mean? SPAU is the transaction used for adjusting repository objects (if necessary) during the upgrade process or during the import of support packages. This activity is usually completed after the processes involving adjustment for database objects by transaction SPDD and Unicode conversion. The activities involved in SPAU are considered critical during an upgrade, which may be either technical or functional. The scope of objects involved using SPAU includes program, screens, function modules, classes and other enhancement objects....

Key Points STEM stands for science, technology, engineering, and mathematics. U.S. National Science Foundation first introduced the term in 2001.The main focus behind STEM is on progress, problem-solving, critical thinking, innovation, and, ultimately, learning.STEM is important because it teaches children science and math-based concepts, focusing on hands-on learning and real-world application that can be put to work in the 21st century. You’ve likely heard of the acronym STEM before — and not in relation to gardening, either....

What Does Storage Infrastructure Mean? Techopedia Explains Storage Infrastructure Cloud storage infrastructure and other types of storage infrastructure can vary quite a bit, partly because of new and emerging storage technologies. For example, with storage virtualization, the infrastructure is changed to become more software-driven than hardware-driven. In a typical storage virtualization environment, a set of physical hard drives are replaced by a set of “logical drives” or “virtual drives” that are partitioned and operated by software....