Question: 1. Assuming that we use CRC for error detection, if the bit-pattern generator is G =101101, calculate the error detection bits that the sender sends

1. Assuming that we use CRC for error detection, if the bit-pattern generator is G =101101, calculate the error detection bits that the sender sends along with the following data: D=101101010101011

2. Estimate the efficiency of CSMA assuming that maximum propagation delay is 240ns, transmission rate of the shared link is 15Mbps and maximum frame size is 2KB. How much should we increase the transmission rate of the shared link so that slotted ALOHA can compete with CSMA and have the same efficiency.

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