Solve it in 20 min maximum please , network engineering please solve it all

Question 24 Calculate the hamming distance for the following code: 0101.001111001111 How many errors can be corrected and detected by this code? Question 22 10 Points Answer the following questions: 1. How does a station using CSMA protocol brows that a collision has happened (2 marks? 2. If we want to digitize a low-pass 4 KHz voice signal and send 4-bits per sample, What should be the minimum channel bandwidth? (2 Mark) 3. Give examples of two controlled access protocols (2 Marks) 4. Give example of two error correction methods (2 Marks) 5. An analog signal has a data rate of 10000 bps and a signal rate of 2000 baud. How many signal elements are required? (2 Marks)