Problem A8 Consider the figure below. App Y Host A App X TCP IP Global network address Host B Port or App Y service access point (SAP) App X Logical connection (TCP connection) TCP IP Network Access Protocol #1 Network Access Protocol #2 Physical Subnetwork attachment point address Router J Logical connection (e.g., virtual circuit) Physical IP NAP 1 NAP 2. Network 1 Network 2 Physical Physical Figure 2.13 TCP/IP Concepts (a) Would Router J verify IP checksums? Why or why not? (b) Would Router J verify TCP checksums? Why or why not? (c) If Network 1 is a LAN, what type of device is used in order to implement that, but is "hidden" behind the symbolic could representation? (d) Assume that Host A is the sender of a message. When Host B receives that message, would the protocol logic of Transport Layer (TCP) verify that the incoming packet's destination MAC address is correct or not? Notes + Q1) give five functional requirements and five non-functional requirements for the development of a mobile app to assess lectures performance by students Q2) give the use case diagram for a mobile app to assess lectures performance by students