Networks Technology 8th Grade Ms. Rocío Acevedo Sept. ’06.

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Presentation transcript:

Networks Technology 8th Grade Ms. Rocío Acevedo Sept. ’06

Ms. Rocío Acevedo Sept. 06The American School of Tampico Network It is a group of computers connected together in a way that allows information to be exchanged between the computers.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Network Purposes Share a single printer between computers Use a single Internet connection Share files such as images, spreadsheets and documents Play games that allow multiple users at different computers Send the output of a device like a DVD player or Web cam to your other computers.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Network components Nodes – computers and peripherals Connecting medium – wires or wireless Network equipment – NICs, routers, switches or hubs All these pieces work together to allow a computer to send information to another computer on other side of the network.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Nodes It is anything that is connected to the network.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Connecting Medium Thick coaxial cable (10BASE5) Thin coaxial cable (10BASE2) Unshielded twisted pair UTP (10BASE-T and 100BASE-TX) Fiber-optic cable (10BASE-FL and 100BASE-FX)

Ms. Rocío Acevedo Sept. 06The American School of Tampico Network Equipment Network Interface Card (NIC) – every computer (and most other devices) is connected to a network through an NIC. In most desktop computers, this is an Ethernet card (10 or 100 Mbps).

Ms. Rocío Acevedo Sept. 06The American School of Tampico Network Equipment Hubs – a central device where nodes are connected. It takes a signal that comes from any node and passes it along to all the other nodes in the network.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Network equipment Switches – Allow different nodes of a network to communicate directly with one another in a smooth and efficient manner.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Network equipment Routers – Allow different networks to communicate with each other.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Types of Network Local Area Network (LAN) Wide Area Network (WAN) Virtual Local Area Network (VLAN)

Ms. Rocío Acevedo Sept. 06The American School of Tampico Local Area Network LAN – A network of computers that are in the same general physical location, usually within a building or a campus.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Wide Area Network WAN – A network of computers that are far apart such as across town or in different cities.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Virtual Local Area Network VLAN – A collection of nodes that are grouped together in a single broadcast domain that is based on physical location. WIRELESS

Ms. Rocío Acevedo Sept. 06The American School of Tampico Internet It is a global collection of networks, both big and small. These networks connect together in many different ways to form the single entity that we know as the Internet. In fact, the very name comes from this idea of interconnected networks.

Ms. Rocío Acevedo Sept. 06The American School of Tampico Internet

Ms. Rocío Acevedo Sept. 06The American School of Tampico Modem The word "modem" is a contraction of the words modulator-demodulator. A modem is typically used to send digital data over a phone line. The sending modem modulates the data into a signal that is compatible with the phone line, and the receiving modem demodulates the signal back into digital data. Wireless modems convert digital data into radio signals and back.