1. Imagine one of your devices at home (say, your mobile phone) is communicating through your ISPs network to an Application Server in the network. The mobile phone communicates as follows:
   1. Uses Wi-Fi to communicate with your home Wi-Fi Access Point (set up as a Router);
   2. Via the Home Router, through the ISPs network to an Application Server;
   3. Within the ISP network, data traverses another Router (the ISPs Router) and a Layer 2 Switch, on the way to the Application Server.

1. Imagine your mobile phone sends an Application Layer data packet (say, an Web HTTP Request). Show the path of the packet through the different protocol layers from step (b). In other words, show via arrow lines how the data packet gets to the application layer in the Server.
2. How many times does the packet go through encapsulations and decapsulations, below the Transport Layer (TCP). In other words, once the TCP Layer creates a TCP packet, how many encapsulations and decapsulations occur until the TCP packet reaches the Transport Layer in the App Server?
3. Imagine the Transport (TCP) Layer in the App Server doesnt acknowledge the TCP packet, and the mobile phones TCP Layer has to retransmit the packet. Show the path through the protocol layers of the retransmitted packet. How many additional header additions and deletions occur? What effect does the retransmission have on: (a) throughput; and (b) latency?