0 votes 0 votes Assume scenario where the size of CW of TCP connection is 40 KB when time out occurs ,MSS= 2KB ,Propagation delay = 200 msec , the time taken by TCP connection to get back 40KB CW is …msec CW = congestion window mohitbawankar asked Oct 29, 2017 • edited Dec 30, 2017 by mohitbawankar mohitbawankar 580 views answer comment Share Follow See 1 comment See all 1 1 comment reply SHUBHAM SHASTRI commented Oct 29, 2017 reply Follow Share 5600 mili sec ?? 0 votes 0 votes Please log in or register to add a comment.
Best answer 1 votes 1 votes threshold=40kB/2=20KB 2 | 4 | 8 | 16 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 |36 | 38 | 40 Because Its TOT at 40 KB so its slow start therfore start exponentially from starting MSS ie.,given 2 KB till threshold (20KB) After threshold go linearly ie increment by MSS (given 2KB) till Max window size (given 40 KB) NO OF RTT=14 RTT = 2 * Tp = 400ms therfore 14*400= 5600 ms after it can send fully Aashish S answered Oct 30, 2017 • selected Oct 30, 2017 by joshi_nitish Aashish S comment Share Follow See all 2 Comments See all 2 2 Comments reply mohitbawankar commented Oct 31, 2017 reply Follow Share in made easy solution no. of RTT =15 0 votes 0 votes Aashish S commented Oct 31, 2017 reply Follow Share hope this link helps - https://gateoverflow.in/146634/congestion-control 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes threshold=40kB/2=20KB MSS=2KB 2KB 4KB 8KB 16KB 18KB 20KB 22KB 24KB 26KB 28KB 30KB 32KB 34KB 36KB 38KB 40KB NO OF RTT=15 RTT =400ms SO 15*400=6000ms after it can send fully pranab ray answered Oct 29, 2017 pranab ray comment Share Follow See all 6 Comments See all 6 6 Comments reply Show 3 previous comments pranab ray commented Oct 29, 2017 reply Follow Share see from 2kb to 4kb ----1RTT 4KB TO 8KB ----2ND RTT LIKE THAT IF U COUNT 38KB TO 40 KB ---15 NUMBER RTT 0 votes 0 votes mohitbawankar commented Oct 29, 2017 reply Follow Share kk..... 0 votes 0 votes akb1115 commented Oct 30, 2017 reply Follow Share same question why have you taken window size to 18kb after 16 kb rather than 20 kb??? 0 votes 0 votes Please log in or register to add a comment.