In general organizations have designed 3 to 4 levels of support services to optimize the use of support staff and effectively handle customer requests depending on the nature of the problem. The Level 1 (L1) support receives inbound requests through channels like phone, Web forms, email, chat, or other means based on the documented agreement with the Client. L1 support typically includes individuals that have very limited technical expertise. L1 support logs, categorizes, prioritizes, tracks, and routes incidents reported by users or alarms raised by monitoring tools. L1 is intended to be the first to acknowledge an incident. L1 support tracks tickets until successfully resolved. L1 engineers can implement basic, documented break-fix tasks along the lines of following a cookbook recipe. L1 personnel will typically escalate to an L2 resource and follow documented escalation procedures, again, like following a cookbook recipe. Depending on the organization, L1 technicians will have from 0 to 4 years of prior relevant experience.

Layers 1 and 2 implement Local Area Networks (LAN's). LAN are small, geographically local, and consist of homogeneous networking technologies. Layer 3 uses layer 2 services to create Wide Area Networks (WAN's), which are larger, geographically dispersed, and consist of heterogeneous networking technologies.

LabVIEW (short for Laboratory Virtual Instrument Engineering Workbench) is a system-design platform and development environment for a visual programming language developed by National Instruments. LabVIEW is commonly used for data acquisition, instrument control, and industrial automation on a variety of platforms including Microsoft Windows, various versions of UNIX, Linux, and OS X.

An open source Web development platform that uses Linux as the operating system, Apache as the Web server, MySQL as the relational database management system and PHP as the object-oriented scripting language. 

An open source intranet chat application that does not require a server.

A program that "serves" the resources (files, storage, application programs, printers, and other devices) for a number of attached workstations. A LAN server can be housed in a computer that has other servers such as a proxy server.

The process of backing up server data to a centralized storage device rather than moving it across a LAN. The backup can be conducted through a storage area network (SAN) or with a tape device directly attached to the storage subsystem. 

A software product from Intel that lets a system administrator for a local area network. LDCM is an implementation of the Desktop Management Interface (DMI) standard established by the Desktop Management Task Force.

Landing page optimization (LPO) is one part of a broader Internet marketing process called conversion optimization, or conversion rate optimization (CRO), with the goal of improving the percentage of visitors to the website that become sales leads and customers.

A Microsoft programming model and methodology that essentially adds formal query capabilities into Microsoft .NET-based programming languages. LINQ offers a compact, expressive, and intelligible syntax for manipulating data. 

A personal computer created for mobile use. The yare someti,es called Notebooks, Ultrabooks, or Netbooks.

Laravel is a free, open-source PHP web application framework with expressive, elegant syntax. It was created by Taylor Otwell and intended for the development of web applications following the model–view–controller (MVC) architectural pattern. Some of the features of Laravel are a modular packaging system with a dedicated dependency manager, different ways for accessing relational databases, utilities that aid in application deployment and maintenance, and its orientation toward syntactic sugar.

A popular type of personal computer printer that uses a non-impact (keys don't strike the paper), photocopier technology. When a document is sent to the printer, a laser beam "draws" the document on a selenium-coated drum using electrical charges. 

A technology and the physical medium used in storing and providing programmed access to a large database of text, pictures, and other objects, including motion video and full multimedia presentations.

LIFO (last-in, first-out) is an approach in which the most recent request is handled next and the oldest request doesn't get handled until it is the only remaining request on the queue (or in the stack).

An extension of the Point-to-Point Tunneling Protocol (PPTP) used by an Internet Service Provider (ISP) to enable the operation of Virtual Private Networks (VPN). L2TP merges features of PPTP from Microsoft and L2F from Cisco Systems