A timer is a useful component in various protocol designs: because a communicating end cannot see what
Question:
A timer is a useful component in various protocol designs: because a communicating end cannot see what is going on either inside the network or at the other end when needed it sets up an ”alarm”, and takes some action when the alarm goes off.
(a) Does HTTP (not considering the underlying TCP) use any timers? If so, please briefly describe how each is used. If not, please explain why it does not need one.
(b) Does DNS use any timers? If so, please briefly describe how each is used. If not, please explain why it does not need one.
(c) Does TCP use any timer? If so, please briefly describe how each is used. If not, please explain why it does not need one.
(d) Does UDP use any timer? If so, please briefly describe how each is used. If not, please explain why it does not need one.
College Physics
ISBN: 978-0495113690
7th Edition
Authors: Raymond A. Serway, Jerry S. Faughn, Chris Vuille, Charles A. Bennett