1. Each host and router has an ARP table in its memory. What are the contents of this table? 2. The Ethernet frame begins with an 8-byte preamble field. The purpose of the first 7 bytes is to “wake...

1. Each host and router has an ARP table in its memory. What are the contents of this table?

2. The Ethernet frame begins with an 8-byte preamble field. The purpose of the first 7 bytes is to “wake up” the receiving adapters and to synchronize their clocks to that of the sender’s clock. What are the contents of the 8 bytes? What is the purpose of the last byte?