1. Networking Components Raymond C. Banks LTEC 4550 October 12, 2013

2. 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

3. 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+

4. 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+

5. 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

6. 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.

7. 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+

8. 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)

9. Diagram Verizon FiOS Router Switch Bridge Cisco RV110W Wireless Firewall WAN Verizon FiOS WAN Level 3 Communications Campus Firewall Campus Gateway