4. Packet Transmission on LAN Below is a small LAN that includes wired and wirel

Question

4. Packet Transmission on LAN Below is a small LAN that includes wired and wireless computers attached to an Ethernet backbone. Please give all of the MAC addresses (abbreviated as A, B, C, D, X, and Y for the hosts and AP1 and AP2 for the Access Points) for all of the packet headers needed to send the following messages. (For a wired packet, list two addresses: dst and src, for a wireless packet, list three addresses: destination, source, and "left-over). Your answers can look like this iust an example): 802.11 frame: dst-Asrc-Blleftover 802.3 frame: dst-A src B LAN Backbone Access Point 1 Access Point 2 Wireless "cell" Wireless "cell" Computer X sends a message to Computer Y: lwired) a. What devices hear this transmission? b. Computer A sends a message to Computer What devices hear this transmission?

Explanation / Answer

a. As computer X and computer Y are connected through wire, if X sends to Y then only Y can hear the transmission apart from the access points .
b. As A is in the wireless cell if it sends a message to X then Y, AP1, AP2 can hear the transmission along with X.

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