List of top Computer Networks Questions on Fragmentation and IP Addressing

Suppose a message of size 15000 bytes is transmitted from a source to a destination using IPv4 protocol via two routers as shown in the figure. Each router has a defined maximum transmission unit (MTU) as shown in the figure, including IP header. The number of fragments that will be delivered to the destination is ___________. (Answer in integer) 

 

Consider an enterprise network with two Ethernet segments, a web server and a firewall, connected via three routers as shown below. 
 

What is the number of subnets inside the enterprise network? 
 

Consider two hosts \(P\) and \(Q\) connected through a router \(R\). The maximum transfer unit (MTU) of the link between \(P\) and \(R\) is 1500 bytes, and between \(R\) and \(Q\) is 820 bytes. A TCP segment of size 1400 bytes was transferred from \(P\) to \(Q\) through \(R\), with IP identification value as 0x1234. Assume that the IP header size is 20 bytes. Further, the packet is allowed to be fragmented. Which of the following statements is/are correct?