4. Identify each of the below scenarios to an appropriate network type (PAN,
LAN, WAN, MAN). Give reasons for your choice. [5]
a. Alice is sending an audio file using WhatsApp from his mobile to his
friend who is sitting beside him in a coffee shop.
b. In BRAC BANK Gulshan branch: IT department, employees are
exchanging files among them using their network.
c. PCs in Ayesha Abed Library can communicate with PCs at BRAC Center
(Both are on different networks).
d. A number of convenient stores (ex: Seven Eleven) located in a city are
connected, so office staff can easily communicate with one another.