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Networking Components. Raymond C. Banks LTEC 4550 October 12, 2013. Hub. Networking device that allows a single broadcast of data across all ports connected (All devices receive the same data of traffic) Can be used in multiple functions – office, home and gaming environment
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Networking Components Raymond C. Banks LTEC 4550 October 12, 2013
Hub • Networking device that allows a single broadcast of data across all ports connected (All devices receive the same data of traffic) • Can be used in multiple functions – office, home and gaming environment • Depending on class, relatively inexpensive - $20-150
Switch • Layer 2 (Data Link) device that connects multiple devices to a single network. Unlike a hub, each device on the switched network receives data only intended for it by relay of unique identifiers, commonly known as a Media Access Control address • Can be used in multiple functions – office, home and gaming environment • Depending on class, pricing can vary from $50-$2000+
Router • Layer 3 (Network) device that routes data (or packets) and serves as a multi-purpose switch, providing switch traffic to multiple networks (VLAN’s). • Primarily used in large offices. • Depending on brand, pricing can vary from $800-$4000+
Bridge • Layer 2 (Data Link) device that determines what to do with packets. • Typically used to expand signal beyond the traditional one-cable ethernet rule or beyond the limitations of a single node wireless router. • Primarily used on a consumer level and in some small businesses. • Depending on brand, pricing can vary from $40-$250
Gateway • Used to join devices on multiple networks through hardware and/or software, this device operates at all levels of the OSI model. • Known as the “edge” of a network, it is common to find firewalls on the edge to block certain traffic from entering. • Can be used in multiple functions – large offices, small businesses and homes. • Depending on class, pricing can vary from $50-$1,500.
Firewall • Operates on Layer 4 (Transport) and Layer 7 (Application) used to filter traffic from the “edge” of a network. • Common rule is to block all with exceptions. • Can be used in multiple functions – large offices, small businesses and homes. • Some firewalls are free (software) • Some firewalls costs (Depending on brand, class, etc.) from $50-$2,000+
Wireless Access Point • Operates as Layer 1 (Physical) to provide wireless signal • Operates at Layer 2 (Data Link) to link wireless to wired network. • Can be used in multiple functions – large offices, small businesses and homes. • Costs are relatively inexpensive ($50-$200)
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