A MAC (Media Access Control) address is physical because it physically identifies the NIC (Network Interface Card). When two NIC's talk to each other, they address each other by MAC address. In order...
There is no correlation between the two. A server can have an IP address without having any form of email system on it, and a server with an email system can have more than one account, and more than...
In the 8086/8088 the physical address and logical address have the same importance, because they both relate to the address of the operand. It is true that the offset (logical) address is added to...