Use this sheet to turn in your answers to these problems. In each Problems 1-11, fill in the appropriate table. For programs 11 and 12, describe what action is taken.
Problems 1-6 are about Protocol 5, Sequential Receive with 3-bit sequence numbers.
Problems 7-12 are about Protocol 6, Nonsequential Receive, also with 3-bit sequence numbers.
Problem 2: Starting with the situation in Problem 1, a frame, s, arrives with s.seq = 2 and s.ack = 6.
Problem 3: Starting with the situation in Problem 1, a frame, s, arrives with s.seq = 3 and s.ack = 2.
Problem 4: The frames with sequence numbers 0, 1 and 7 are buffered by the sender and the receiver is expecting frame 5.
Problem 5: Starting with the situation in Problem 4, a frame, s, arrives with s.seq = 5 and s.ack = 7.
Problem 6: Starting with the situation in Problem 4, two network_layer_ready events occur.
Problem 7: The frames with sequence numbers 5, 6, and 7 are buffered by the sender and the receiver is expecting frame 3. The receiver has frames 4 and 6 buffered.
Problem 8: Starting with the situation in Problem 7, a frame, s, of type data arrives with s.seq = 5 and s.ack = 6.
Problem 9: Starting with the situation in Problem 7, a frame, s, of type data arrives with s.seq = 3 and s.ack = 4.
Problem 10: Starting with the situation in Problem 7, a network_layer_ready event occurs.
Problem 11: Starting with the situation in Problem 7, a frame, s, of type nak arrives with s.ack = 6. Also, describe what action is taken as far as sending frames in response to this event.
Problem 12: Starting with the situation in Problem 7, an ack_timeout occurs. What action is taken? Be specific.