1.False : because in tcp every byte is numbred and header contains the sequence number of 1st byte so sequence number in 2nd packet will be the next sequence number of last bit in 1st packet.
2. true:consider either the basic algorithm or jacobsn algorithm the value of timeout is always set > rtt for next transmission.
3.false: adv value in tcp header is dynamically changed by receiver each time.
4.true: window size at the receiver is always less than or equal to re1ceiver window size and thus the number of unacknowleged bytes can never exceed advertized window at that time.