... circuit switching and packet switching • Explain the difference between connectionless and connection oriented communication • Explain the difference between a datagram service and a virtual circuit ... Indicate the structure and relevance of the IEEE 802 (ISO 8802) series of Standards and Working Groups • Identify hub, ring and bus topologies – from a physical as well as from a logical point of ... Manchester codes, as used for 10 Mbps Ethernet, are self-clocking but consume unnecessary bandwidth. For this reason, it is not possible to use it for 100 Mbps Ethernet over CAT5 cable. A solution...