Problem #4 (3 points): Consider sending a 1500-byte IP datagram (inclusive of a minimum size header of 20 bytes) from host A to host B along the path shown in the following figure. Assume that the MTU of each of the shown links is inclusive of a minimum size header of 20 bytes. R1 R2 R3 MTU- 1,500 Bytes MTU- 600 Bytes MTU- 1,500 Bytes MTU- 1,500 Bytes 1. (1 point) Find the total number of fragments generated by router R1. 2. (2 points) Specify the header's "offset" field value of each fragment that is generated by router R1