35 votes 35 votes Which of the following fields of an IP header is NOT modified by a typical IP router? Check sum Source address Time to Live (TTL) Length Computer Networks gatecse-2015-set1 computer-networks ip-packet easy + – 🚩 Edit necessary | 👮 Arjun | 💬 “better answer needed” makhdoom ghaya asked Feb 13, 2015 makhdoom ghaya 10.3k views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Shivam Chauhan commented Oct 7, 2016 reply Follow Share @Kapilp how is length modified 2 votes 2 votes Vicky rix commented Oct 27, 2017 reply Follow Share If you fragment a datagram into smaller fragments then offcourse size of IP datagram becomes smaller and so Total_Length field of IP datagram will be modified... 28 votes 28 votes vikas commented Jan 23, 2018 reply Follow Share doubt here....Because TTL value modified by Hop Only, not by router so i think both B and C should be right.... 0 votes 0 votes Shubhanshu commented Jan 28, 2018 reply Follow Share @vikas Hops are links they are not the electronic devices which can change the value. 2 votes 2 votes Please log in or register to add a comment.
2 votes 2 votes Only source IP address will not change at router and all mentions feild above will definately change. Therefore option B will be right option for it. Paras Nath answered Dec 28, 2016 • edited Jan 25, 2017 by priyanka gautam-piya Paras Nath comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Only source Ip address will not change otherwise our delivered letter can not go our girl freind house. Paras Nath answered Sep 10, 2016 Paras Nath comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Option B Source address. Gajanan Purud answered Sep 16, 2023 Gajanan Purud comment Share Follow See all 0 reply Please log in or register to add a comment.