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Cisco Switch

Cisco Systems is a multinational corporation with 63,000 employees and annual revenue of US$35 billion as of 2007. Headquartered in San Jose, California, it designs and sells networking and communications technology and services under five brands, namely Cisco, Linksys, WebEx, IronPort, and Scientific Atlanta. Initially, Cisco manufactured only enterprise multi-protocol routers but gradually diversified its product offering to move into the home user market with the purchase of Linksys while also expanding its offering for corporate customers. A network switch is a computer networking device that connects network segments. Switches Catalyst series: 500 Express, 1200, 1600, 1700, 1900, 2000, 2100, 2800, 29xx, 3000, 35xx, 37xx, 40xx, 45xx, 5000 series, 5500 Series, 6500 etc.. Metro Ethernet ME 3400 Series Access Switches MGX 8800 Series Multiservice Switches: MGX 8830, MGX 8850 MDS 9000 Series Multilayer SAN Switches Linksys 48 port switch.Low-end network switches appear nearly identical to network hubs, but a switch contains more "intelligence" (and comes with a correspondingly slightly higher price tag) than a network hub. Network switches are capable of inspecting data packets as they are received, determining the source and destination device of that packet, and forwarding it appropriately. By delivering each message only to the connected device it was intended for, a network switch conserves network bandwidth and offers generally better performance than a hub. In the past, it was faster to use Layer 2 techniques to switch, when only MAC addresses could be looked up in content addressable memory (CAM). With the advent of ternary CAM (TCAM), it was equally fast to look up an IP address or a MAC address. TCAM is expensive, but very appropriate for enterprise switches that use default routes plus a moderate number of other routes. For routers that need a full Internet routing table, TCAM may not be cost-effective. Network switch is a marketing term rather than a technical one. Switches may operate at one or more OSI layers, including physical, data link, network, or transport (i.e., end-to-end). A device that operates simultaneously at more than one of these layers is called a multilayer switch, although use of the term is diminishing. In switches intended for commercial use, built-in or modular interfaces makes it possible to connect different types of networks, for example Ethernet, Fibre Channel, ATM, and 802.11. This connectivity can be at any of the layers mentioned. While Layer 2 functionality is adequate for speed-shifting within one technology, interconnecting technologies such as Ethernet and token ring are easier at Layer 3. Again, "switch" is principally a marketing term; interconnection of different Layer 3 networks is done by routers. If there are any features that characterize "Layer-3 switches" as opposed to general-purpose routers, it tends to be that they are optimized, in larger switches, for high-density Ethernet connectivity. In some service provider and other environments where there is a need for much analysis of network performance and security, switches may be connected between WAN routers as places for analytic modules. Some vendors provide firewall, network intrusion detection, and performance analysis modules that can plug into switch ports. Some of these functions may be on combined modules. In other cases, the switch is used to create a "mirror" image of data that can go to an external device. Since most switch port mirroring provides only one mirrored stream, network hubs can be useful for fanning out data to several read-only analyzers, such as intrusion detection systems and packet sniffers. Wiki Cisco Switch 		More liquidators



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recycle symbol

The universal recycling symbol is an internationally-recognized symbol used to designate recyclable materials. It is composed of three chasing arrows that form a Möbius strip or unending loop.

Refurbishment

Refurbishment (restoration) is the process of major maintenance or minor repair of an item, either aesthetically or mechanically. Often, antiques such as furniture are refurbished to bring back their original luster by applying new paint or wood stain, fixing loose joints with glue or nails, and cleaning or replacing hardware such as drawer pulls. Toys such as model trains are also refurbished, especially if they are considered classics. In some cases, even paper items such as valuable comic books can be refurbished by replacing rusty staples, removing page stains with chemicals, etc. If a building is "refurbished", it usually becomes a renovation. Antique, classic and muscle cars are frequently restored, both cosmetically and mechanically. In most jurisdictions, restored cars that pass an inspection can be registered for legal use on the road. Many classic car owners enjoy taking their rare restored vehicles to car shows or out for recreational driving. Computers and laptops that are refurbished usually means that it did not initially pass quality standards of the manufacturer. They then fix or recertify the unit and sell it at a discount price (Up to 30% off). Most of them carry a 30 day store warranty and 90 days with manufacturer. Open-box, returned and/or repaired electronics of all kinds are frequently sold as refurbished, almost always with a guarantee of functionality and at a small discount. Refurbishment is especially common with more expensive types of electronics such as video game consoles and computer monitors, likely because these items have relatively high return rates (attributed to a combination of buyer's remorse and the fact that categories of electronics have a direct cost-to-complexity relationship; complex gadgets are more likely than simpler ones to have one or two defective components) and benefit more, sales-wise, from price-proportional discounts than cheaper items.

Foundry Networks

Foundry Networks, Inc. is a networking hardware vendor selling high-end Ethernet switches and routers. The company was founded in 1996 by Bobby R. Johnson, Jr. and is headquartered in Santa Clara, California, USA. In its first year the company operated under the names Perennium Networks and StarRidge Networks, but by January 1997 the name Foundry Networks was adopted. Foundry FastIron II Plus chassis with two fiber management cards and six 16-port gigabit Ethernet cards.Foundry Networks designs, manufactures and sells high-end enterprise and service provider switches and routers, as well as wireless, security, and traffic management solutions. It is best known for its Layer 2 & 3 Ethernet switches. Foundry Networks was the first company to build and ship a gigabit Ethernet switch in 1997; to build a Layer 3 switch, also in 1997; to build the first Layer 4-7 switch in 1998 and to include 10 gigabit Ethernet single connectors in its boxes

Juniper Networks

Juniper Networks, Inc. is an information technology company based in Sunnyvale, California and founded in 1996. Juniper Networks designs and sells Internet Protocol network products and services. Juniper also partners with Ericsson, Lucent, and Siemens AG to provide IP/MPLS network solutions to customers. Juniper's products include T-series, M-series, E-series, and J-series families of routers, and the SDX Service Deployment System.

Sun Systems

Sun Microsystems, Inc. is an American vendor of computers, computer components, computer software, and information technology services. Sun systems is headquartered in Santa Clara, California. Sun is located in part of Silicon Valley. Sun Systems is on the former west campus of the Agnews Developmental Center. Sun Microsystems Products include computer servers and workstations based on its own SPARC processors as well as AMD's Opteron and Intel's Xeon processors; storage systems; and, a suite of software products including the Solaris Operating System, developer tools, Web infrastructure software, and identity management applications. Other technologies of note include the Java platform and NFS. Sun is a proponent of open systems in general and UNIX in particular and a major contributor of open source software.

Electronic test equipment

Electronic test equipment is used to create stimulus signals and capture responses from electronic Devices Under Test . In this way, the proper operation of the DUT can be proven or faults in the device can be traced and repaired. Use of electronic test equipment is essential to any serious work on electronics systems. Practical electronics engineering and assembly requires the use of many different kinds of electronic test equipment ranging from the very simple and inexpensive to extremely complex and sophisticated such as Automatic Test Equipment. Generally, more advanced test gear is necessary when developing circuits and systems than is needed when doing production testing or when troubleshooting existing production units in the field.

Automatic test equipment

Automatic test equipment is any automated device that is used to quickly test printed circuit boards, integrated circuits, or any other related electronic components or modules. For some Automatic test equipment is ATE. Automatic test equipment devices are essentially always controlled by computers. In the past, custom-designed controllers or even relay controls were used to control ATE An Automatic test equipment system can be simple as or complex ATE as a system containing dozens of complex test instruments capable of automatically testing and diagnosing faults in complex electronic systems, such as very sophisticated flying-probe testers. Automatic test equipment systems are used to test a wide range of electronic devices and systems, from simple components (resistors, capacitors, and inductors) to integrated circuits (ICs), printed circuit boards (PCBs), and complex, completely-assembled electronic systems. Automatic test equipment is widely used in the electronic manufacturing industry to test electronics components and systems after they are fabricated. ATE is also used to test avionics systems on commercial and military aircraft. ATE systems are also used to test the electronic modules in today’s automobiles. Automatic test equipment systems typically interface with an automated placement tool, called a Handler, that physically places the Device Under Test so that it can be measured by the equipment. Over the past four decades, ATE has grown from specialized systems for electronics test applications to a wide range of applications in all facets of the electronics industry. Many ATE platforms used in the semiconductor industry output data using Standard Test Data Format.

Sarbanes-Oxley

The Sarbanes-Oxley Act of 2002 can be known as the Public Company Accounting Reform and Investor Protection Act of 2002. Sarbanes-Oxley Act is commonly called SOX or Sarbox. SOX is a United States federal law enacted in response to a number of major corporate and accounting scandals including those affecting Enron, Tyco International, Adelphia, Peregrine Systems and WorldCom. These scandals, which cost investors billions of dollars when the share prices of the affected companies collapsed, shook public confidence in the nation's securities markets. Sarbanes-Oxley is named after sponsors Senator Paul Sarbanes and Representative Michael G. Oxley. Auditor conflicts of interest: Prior to SOX, auditing firms, the primary financial "watchdogs" for investors, also performed significant non-audit or consulting work for the companies they audited. Many of these consulting agreements were far more lucrative than the auditing engagement. This presented at least the appearance of a conflict of interest. For example, challenging the company's accounting approach might damage a client relationship, conceivably placing a significant consulting arrangement at risk, damaging the auditing firm's bottom line.