Class A Class B Class C

How do we get the IP address? Domain name servers translate the domain name to IP address

Web server ecom. cs. vu. edu Sub Domain SLDTLD

Domain Hierarchy edu gov netorg com pk vu pu csms ecom1 ecom2 int

Name Resolution client ecom.cs.vu.edu Local Name server Root Name server VU Name server CS Name server ecom.cs.vu.edu vu.edu, ecom.cs.vu.edu cs.vu.edu, ecom.cs.vu.edu

MAC Address Consists of 12 hexadecimal characters A9B2EF 09:00:17:A9:B2:EF A9-B2-EF A pattern of 48 bits is available 2 48 unique MAC addresses possible Institute of Electrical and Electronic Engineers (IEEE) administers the allocation of MAC addresses