Windows 7: 70-680

Answer - C - The statement that is true regarding IPv6 and IPv4 is that IPv6 has 128 bits, where as IPv4 has 32 bits.

Key Takeaway: IPv4 is 32 bits in length, whereas IPv6 is 128 bits in length. The A resource records in DNS maps host names to IPv4 addresses and AAAA resource records in DNS maps host names to IPv6 addresses. In IPv4, the Header includes a checksum and in IPv6, the Header does not include a checksum. IPv4 is configured either manually or through DHCP, whereas IPv6 does not require manual configuration or DHCP.