Answer Happy

Does UDP support reliable data transfer?
a. Yes. UDP uses timeouts and acknowledgements to ensure
reliable data transfer.
b. No. Applications running on top of UDP could enjoy reliable
data transfer if TCP-like functionality is implemented at the
application layer.
c. No. Applications running on top of UDP could enjoy reliable
data transfer by sending their packets through TCP sockets.
d. Yes. UDP uses checksums to ensure reliable data transfer.
e. No. Applications running on top of UDP could not enjoy
reliable data transfer at all.