Suppose the window size is 3.

For Go-back N (GBN) answer following:

(a) List all the possibilities for the receivers next expected sequence number, when the senders window is currently [401, 402, 403].

(b) Suppose the receivers next expected sequence number is 401. List all the possible ranges for the senders window. 4.

For Selective Repeat answer following:

(c) List all the possible ranges for the receivers window when the senders window is currently [501,502, 503].

(d) List all the possible ranges for the senders window when the receivers window is currently [501,502,503].