Chapter 5: Warning Signs from Network Data

1. (4)
   Layer 2 is the data link layer, which works between the network layer and the physical layer. The addresses at layer 2 are called physical, burnt-in, or MAC addresses; the addresses are (mostly) set at point of manufacture.
   The network layer address is referred to as a logical address because the addressing system is hierarchical. The most common network layer protocol address scheme is the IP address.
   The correct combination is therefore Layer 2: MAC address | Layer 3: Logical Address.
2. (1)
   The MAC address table matches MAC addresses to the relevant exit interface on a switch. The interface list is a list of the interfaces that are present on the switch. The ARP table matches IP addresses to MAC addresses, and the routing table is used on routers to track how to get from one network to the next.
3. (2)
   The Cyclic Redundancy Check (CRC...