Preventive Maintenance Essays

Topics: Ethernet, Computer network, Network topology Pages: 3 (741 words) Published: March 15, 2011
COREY PORTER 02/22/11 CHAPTER 5

1. If there is a problem with the cable, the entire network breaks down. Maintenance cost may be higher in the long run. Performance degrades as additional computers are added or on heavy traffic (shared bandwidth Limited cable length and number of station 2. Easy to install and wire. No disruptions to the network when connecting or removing devices Easy to detect faults and to remove parts 3.In CSMA/CD, each node wait its turn before transmitting data to avoid interfering with nodes’ transmissions. If a node’s NIC determines that its data has been involved in a collision, it immediately stops transmitting. Next, in a process called jamming, the NIC issues a special 32- bit sequence that indicated to the rest of the network nodes that its previous transmission was those data frames are invalid. After waiting, the NIC determines if the line is again available; if it is available, the NIC retransmits its data. 4. Carrier Sense refers to the fact that Ethernet NICs listen on the network and wait until they detect or sense that no other nodes are transmitting data over the signal or carrier on the communications channel before they begin to transmit. The term Multiple Access refers to the fact that several Ethernet nodes can be connected to a network and can monitor traffic, or access...
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