PPT Slide
???? Slotted ALOHA has improved utilization since the window of vulnerability is halved compared to pure ALOHA.
????CSMA/CD is likely to be much better than CSMA when t_prop/t_trans ɭ
????The logical bus model used in Ethernet implies that the channel is used in a half-duplex mode, which is why hubs do not appear in Gigabit ethernet.
????Hubs connect two collision domains, whereas bridges connect two broadcast domains.
????Bridges and switches in Ethernet allow separation of collision domains, and reduce the degree of sharing of the physical media.
????100Base-T was made possible because the maximum segment length necessary in UTP tree architectures was 100m.
????The smallest valid Type field in the Ethernet header is 0x0800 because of interoperability concerns with IEEE 802.3 which has a MTU of 1518 bytes
????The reason Ethernet has a minimum frame size is to guarantee detection of collision (or the lack of it) before the end of frame transmission
????The reason a collection of bridged collision domains do not scale is because the probability of broadcasts (by nodes or bridges) increases.