Which of the following statements is/ are true about the fragmentation which is done at network layer.
(I) The offset of 1st fragment is always offset of parent.
(II) The MF of last fragment is always same MF of parent.
I think I is true and II is false:
Explanation for II :-
Host A connected to R1 and R1 connected to host B.
Link A-R1 MTU = 220 Including IP header of 20 Bytes
Link R1-B MTU = 100 Including IP header of 20 Bytes.
Host A has 400 Bytes of TCP datagram
In link A-R1:-
1st packets <20, 200> MF = 1
2nd packets <20, 200> MF = 0
In link A-R2:-
1st packet in A-R1 is divided into 3 parts
packet 1.1 <20,80> MF = 1
packet 1.2 <20,80> MF = 1
packet 1.3 <20,40> MF = 0
packet 1.3's MF != MF of packet 1 In A-R1.
is it correct.