1. Look at the network communication scenario using TCP fast retransmit as shown in the following figure. The first packet Seq=100 arrives at the B successfully, but the second packet Seq = 110 with length 20 bytes was lost. 
2.  
a. Please tell what are the values for ACK1, ACK2, ACK3, ACK4, and Seq1 respectively? 

b. How many bytes are retransmitted finally? 

Transcribed Image Text:

Host A timeout Seq=100, 10 bytes of data Seq-110, 20 bytes of data X LACK1= ACK2= Host B ACK3= ACK4= Seq1=_ bytes of data Host A timeout Seq=100, 10 bytes of data Seq-110, 20 bytes of data X LACK1= ACK2= Host B ACK3= ACK4= Seq1=_ bytes of data