Problem 4. (20 marks) This problem is about error control Cerror detection/correction) methods available at link available at link layer data is D compute can this scheme detect (3 marks)? CRC scheme (cyclic redundancy check), if the generator is given as G 1101 and - 101011, compute R (7 marks). What is the maximal number of error bits (b). If capability of correcting 1-bit error is required at the receiver's end, what error control scheme should be adopted (3 marks)? Suppose the sender wants to send two bytes of data, what is the minimal number of bits in total (both data and error control bits) should be sent with the adopted scheme (7 marks)? 4/4