Suppose that host A sends two segments of sizes 90 and 100 (bytes) to host B via TCP, with initial sequence number 110 (this is also the initial AckNum at B). If both segments are successfully received and acknowledged, then AckNum at the receiver equals lost but the second segment is received, then AckNum equals . If the first segment is 90 If both segments are successfully received but the acknowledgement of the first segment is lost (acknowledgement of the second segment is received), then NextSeqNum at the sender equals