ccna question dump

ccna question dump.The more devices in an Ethernet segment, the greater the likelihood of a conflict. If the segment contains too many devices, conflicts will be too frequent, which in turn will severely impact throughput. Therefore, the number of conflicts per segment must be monitored. The more conflicts there are, the lower the throughput will be. Usually, if the conflicts do not exceed one percent of the total traffic, it does not matter. This does not mean that conflicts are a bad thing - they are an integral part of Ethernet.Practical Experience In the networking world, the term throughput refers to the amount of data that is actually transmitted in a given period of time. As mentioned in Chapter 2, each layer of the OSI reference model has a certain amount of overhead to successfully transmit data, which affects the amount of spit.3. Conflict DomainGiven that Ethernet is subject to conflicts, network devices that share a medium (connected to the same physical network segment) belong to the same conflict domain. This means that traffic generated by one device in the same conflict domain will have a negative impact on other devices. To resolve conflict and bandwidth issues on a network segment, use bridges, switches, and routers, which will be discussed in Chapter 4.Be sure to understand the Ethernet media access method The mechanism of CSMA/CD Ethernet, Fast Ethernet, and Gigabit Ethernet all useCSMA/CD. all devices are equal in terms of transferring data over the cable. (a) Before transferring data, the device must listen to the cable.If the cable is idle, the device can send the frame. If two devices transmit frames at the same time, a conflict will occur; in this casecongestion signal will be generated and the device must wait for a random period of time before listening to the cable again.3.1.2 Ethernet ImplementationThere are two versions of Ethernet: IEEE implementation and Ethernet II Devices running TCP/IP typically use Ethernet II 0 Ethernet II