Which of the following is true about IPv6?
A. With IPv6, the TCP port numbers of most services have changed.
B. IPv6 no longer supports broadcast addresses.
C. IPv4 addresses can be used without any change with IPv6.
D. IPv6 no longer supports multicast addresses.
E. For IPv6, UDP and TCP have been replaced by the Rapid Transmission Protocol RTP.
題解
選項A，TCP的連接埠和IPv4都一樣，不影響。
選項B，IPv6只有單播(unicast)、任播(anycast)和多播(multicast)，沒有廣播(broadcast)。
選項C，IPv4和IPv6彼此並不能相容。
選項D，IPv6支援多播(multicast)。
選項E，IPv6依然有UDP和TCP。