Network 1 In the SR receiver window (see diagram below), why haven't the red packets been delivered

Network 1

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In the SR receiver window (see diagram below), why haven't the red packets been delivered yet? send base nextseqnum 000000 twindow size. 1000000 rcv_base N (a) sender view of sequence numbers |||1000 window size. N already ack'ed sent, not yet ack'ed out of order (buffered) but already ack'ed Expected, not yet received (b) receiver view of sequence numbers usable, not yet sent not usable acceptable (within window) not usable O The SR receiver prefers to deliver packets in groups rather than one at a time. O Red packets have a lower delivery priority up to the application. There is a packet with a higher sequence number that has yet to be received, so in-order delivery to the application layer is not possible. 43300 ing O There is a packet with a lower sequence number that has yet to be received, so in-order delivery of data up to the application layer is not possible. In the SR receiver window (see diagram below), why haven't the red packets been delivered yet? send base nextseqnum 000000 twindow size. 1000000 rcv_base N (a) sender view of sequence numbers |||1000 window size. N already ack'ed sent, not yet ack'ed out of order (buffered) but already ack'ed Expected, not yet received (b) receiver view of sequence numbers usable, not yet sent not usable acceptable (within window) not usable O The SR receiver prefers to deliver packets in groups rather than one at a time. O Red packets have a lower delivery priority up to the application. There is a packet with a higher sequence number that has yet to be received, so in-order delivery to the application layer is not possible. 43300 ing O There is a packet with a lower sequence number that has yet to be received, so in-order delivery of data up to the application layer is not possible.