COMPUTER NETWORKING

Detailed explanation-1: -Classes A, B, and C provide unicast addresses for networks of three different network sizes. Class D is for multicast networking and the class E address range is reserved for future or experimental purposes.

Detailed explanation-2: -Layer 2 Addressing Layer 2 addresses are also called MAC addresses, physical addresses, or burned-in addresses (BIA). These are assigned to network cards or device interfaces when they are manufactured. MAC addresses (Figure 1.15) have a value of 48 bits.