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Net+ Eth. & Tok Ring
Network+ 2005 5-22: Ethernet and Token Ring Devices
| Question | Answer |
|---|---|
| Ethernet Hub | A device that takes transmits the signals from each device to every other on a star topology -Operates at the physical layer |
| Passive Hub | A hub that just takes the signal on one cable and sends it down the others -also called a concentrator -most have power sources -some have A BNC connector for a connection to a 10Base2 line or an AUI port to connect a transceiver |
| Active Hub | A hub that retransmits weak/damaged signals with proper voltage and current -this resets cable length limitations for the network -Some active hubs can resynchronize data that has been received out of std. time limits, and may alert the admin of this |
| Switching Hub | A hub that records the MAC of each NIC at power on, then looks at the destination of each packet received and retransmits the packet only to the recipient -Has a memory buffer to hold packets as needed, which allows NICs of different speeds to be attache |
| Intelligent Hub | A term that can refer to any of a number of advanced management features such as a management webpage, traffic statistic and network event reporting, support for SNMP, routing/bridging functions, etc. |
| Token Ring Installation Facts -Max nodes/MSAU -Max MSAUs/Ring -Max Nodes/Port Cable (w/ Local Ring Hub) -Max Nodes/Ring | 8 12 4 64-72 |
| Token Ring Max Distances Node-MSAU MSAU-MSAU MSAU-Repeater Max Network Length MSAU-Fiber Optic Repeater | 45 m 120 m 600 m 750 m (Type 1 cabling) 1.5 km (max. net. 4 km) |
| MSAU (MAU) | Multistation Access Unit The 'hub' of a Token Ring network -it makes the network act as a ring |
| Multiple MSAU Chaining | The Ring Out of each is plugged into the Ring In of the next A total of two rings are completed, one for transmission and one for backup. When a failure occurs, the MSAUs on either side detect it and use the backup ring |
| Patch Panel | A panel that has one network connector for each wall jack in a facility -Patch cables are then used to make connections to hubs or MSAUs -Must calculate patch cables into max. lengths |
| Transceiver | A device that links two media types without changing the channel access method -Has an AUI port on one side and a 10Base2, 10Base5, RJ-45, or fiber optic connector -called a Media Filter in a Token Ring context |
Created by:
ibnpaul
on 2008-12-15