Task

GAN SIONG HIN

3BITC

B031310140

Task 1:

List all the dial up modem speed (connection vs bitrate).

The figure below shows the dial up modem speed (connection vs bitrate).

Note: The values given are maximum values, and actual values may be slower under certain conditions (for example, noisy phone lines).

Figure 1.1:  The dial up modem speed (connection vs bitrate).

Task 2:

Briefly describe the process of sending packets from host A to host D.

The process of sending packets from host A to host D is goes like this:

1. Host A requires IP address of Host D to send a packet to the destination.
   If the Host A does not know the IP address of Host D, the packet will send an ARP request to the network to the destination IP address.
2. If the IP address is local, the host will reply to the sender with the MAC address, else if IP address is non-local, the gateway router will detect and send to the router's MAC address .
3. The packet arrives to the router and then sent out to the port.
4. Finally the packet is delivered to the destination host.