NETWORKS.

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Presentation transcript:

NETWORKS

What is Network? A system of interconnected computers that communicate with one another and share applications, data, and hardware components.

Shared Peripheral Devices Personal Communications Easier Data Backup List four benefits/features that networks provide to their users. Simultaneous Access Shared Peripheral Devices Personal Communications Easier Data Backup

Two Common Types Networks Local Area Network Wide Area Network

Local Area Network A system of Personal computer’s located relatively near to one another and connected by wire or a wireless link.

A computer network that spans a wide geographical area. Wide Area Network A computer network that spans a wide geographical area.

How Networks are structured

Include many nodes and one or more servers, which Server Based Network Server based Networks Include many nodes and one or more servers, which control user access to the network’s resources.

Client/Server Networks Individual computers Share the processing and storage workload with a central server.

A network environment in which all nodes on the network have equal Peer-to Peer Networks A network environment in which all nodes on the network have equal access to at least some of the resources on all other nodes.

wires that connect the computers in a network. Topology The physical layout of wires that connect the computers in a network.

• Star Topology • Ring Topology • Mesh Topology • Bus Topology Types of Topology • Bus Topology • Star Topology • Ring Topology • Mesh Topology

Protocol A set of rules and procedures that determine how a computer system receives and transmits data

• TCP/IP (Transmission Control Protocol/Internet Protocol) • IPX/SPX Common LAN Protocols • TCP/IP (Transmission Control Protocol/Internet Protocol) • IPX/SPX • NETBIOS • NetBEUI

Network Interface Card A circuit board that controls the exchange of data over a network.

Hub In a network, a device that connects nodes and servers together at a central point.

Modem A Modem converts outgoing digital data into analog signals that can be transmitted over phone lines and converts incoming analog signals into digital data that can be processed by the computer. The speed of Modem is measured in: Kbps- Kilo bits per second

Wireless Network Wireless Access Point Wireless Adapter Card A Network that transmits data without the use of wires and cables. Such networks typically transmit data via radio waves or infrared signals. Wireless Access Point Wireless Adapter Card