Given the following IPv6 addresses in hexadecimal colon notation, answer the following questions. Where applicable leave your answers in fully expanded hexadecimal colon notation.
(a) What is the full (expanded) address of the abbreviated IPv6 address FDEC::CF:0:FFFF 
(b) What is the type of block of the abbreviated IPv6 address
2001:A100:FC1::A4B8:AE12:3217:FCBA