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Network Switch Presentation Transcript:
1.Lecture 4 Network Switch
2.Network switch
A network switch is a computer networking device that links network segments or network devices.
The term commonly refers to a multi-port network bridge that processes and routes data at the data link layer (layer 2) of the OSI model.
Switches that additionally process data at the network layer (layer 3) and above are often called layer-3 switches or multilayer switches.
3.Router
A router is a device that forwards data packets between computer network, creating an overlay internet work.
A router is connected to two or more data lines from different networks.
4.When a data packet comes in one of the lines, the router reads the address information in the packet to determine its ultimate destination. Then, using information in its routing table or routing policy, it directs the packet to the next network on its journey. Routers perform the "traffic directing" functions on the Internet.
A data packet is typically forwarded from one router to another through the networks that constitute the internetwork until it gets to its destination node
5.Network interface controller
A network interface controller (also known as a network interface card, network adapter, LAN adapter and by similar terms) is a computer hardware component that connects a computer to a computer network.
6.Wireless network interface controller
A wireless network interface controller (WNIC) is a network interface controller which connects to a radio-based computer network rather than a wire-based network such as Token Ring or Ethernet.
7.A WNIC, just like other NICs, works on the Layer 1 and Layer 2 of the OSI Model.
A WNIC is an essential component for wireless desktop computer.
This card uses an antenna to communicate through microwaves.
A WNIC in a desktop computer usually is connected using the PCI bus. Other connectivity options are USB and PC card. Integrated WNICs are also available, (typically in Mini PCI/PCI Express Mini Card form).
8.A patch cable or patch cord is an electrical or optical cable used to connect ("patch-in") one electronic or optical device to another for signal routing.
9.Devices of different types (e.g., a switch connected to a computer, or a switch to a router) are connected with patch cords. Patch cords are usually produced in many different colors so as to be easily distinguishable, and are relatively short, perhaps no longer than two meters.
10.Network IO
The term I/O is used to describe any program, operation or device that transfers data to or from a computer and to or from a peripheral device.
Every transfer is an output from one device and an input into another.
Devices such as keyboards and mouse are input-only devices while devices such as printers are output-only.
A writable CD-ROM is both an input and an output device.
11.Unshielded twisted pair (UTP)
UTP cables are found in many Ethernet networks and telephone systems. For indoor telephone applications, UTP is often grouped into sets of 25 pairs according to a standard 25-pair color code originally developed by AT&T Corporation. A typical subset of these colors (white/blue, blue/white, white/orange, orange/white) shows up in most UTP cables.
12.Unshielded twisted pair (UTP)
UTP cables are found in many Ethernet networks and telephone systems. For indoor telephone applications, UTP is often grouped into sets of 25 pairs according to a standard 25-pair color code originally developed by AT&T Corporation. A typical subset of these colors (white/blue, blue/white, white/orange, orange/white) shows up in most UTP cables.
13.UTP cable is also the most common cable used in computer networking. Modern Ethernet, the most common data networking standard, utilizes UTP cables. Twisted pair cabling is often used in data networks for short and medium length connections because of its relatively lower costs compared to optical fiber and coaxial cable.
14.RS Components stocks connectors for electrical and electronic applications, from heavy duty industrial/power connectors through to crimp terminals. You will also find tooling, accessories, IEC and mains leads as well as a wide variety of audio and video products
15.crimping tool
A crimping tool is a tool designed to crimp or connect a connector to the end of a cable. For example, network cables and phone cables are created using a crimping tool to connect the RJ-45 and RJ-11 connectors to the end of the cable. In the picture to the right, is an example of what a crimping tool looks like. This example shows a tool capable of crimping both RJ-11 and RJ-45 connectors
Source: Power Point Presentations
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