A station connected to an Ethernet network is sending the message TESTING to
another station connected to the same network. Source address is 00:40:05:1c:0e:9f and destination
address is 00:09:f6:01:cc:b3. Assuming the text is being transmitted in ASCII, and the message is being
sent directly from the application to the data link layer; i.e., the application is bypassing transport and
network layers, calculate the checksum field in the trailer of this Ethernet frame. You may use an
online checksum calculator.