Answer true or false to the following questions and briefly justify your answer (note that the alternating-bit protocol is rdt 3.0 in which sequence numbers alternate between 0 and 1):

a. With the SR protocol, it is possible for the sender to receive an ACK for a packet that falls

outside of its current window.

b. With GBN, it is possible for the sender to receive an ACK for a packet that falls outside of

its current window.

c. The alternating-bit protocol is the same as the SR protocol with a sender and receiver

window size of 1.

d. The alternating-bit protocol is the same as the GBN protocol with a sender and receiver

window size of 1.