Computer Science 360
                                 Quiz  G             Name___________________

1. Suppose receive buffer space is 10,000 bytes, rcv.app = 4000 and
   rcv.nxt is 7000.

   a. What values will be sent in outgoing packets for

      WINDOW =

      ACK =


   b. Supose a packet with SEQ = 9000 and length = 1000 is now received.
      What will outgoing window and ack be now?

      WINDOW =

      ACK =


   c. Suppose a packet with SEQ = 7000 and length = 2000 is now received
      What will outgoing window and ack be now?

      WINDOW =

      ACK =


   d. Finally assume that the application reads 5000 bytes.

      What will outgoing window and ack be now?

      WINDOW =

      ACK =


2. Suppose transmit buffer space is 20,000,  snd.ntx = 24,000
   snd.una = 22,000 and a packet is received with ACK = 26000
   and WINDOW = 12000.  After the incoming packet is processed,


   a. Suppose that the full complement of bytes are presently buffered,
      how many bytes may the sending TCP send before it
      must stop sending.