36. _____ is one of the most difficult errors to filter. White noise Impulse noise Attenuation Crosstalk 37. _____ is always present to some degree in transmission media and electronic devices and depends on the temperature. White noise Impulse noise Crosstalk Attenuation 38. Proper termination of cables can help prevent crosstalk. delay distortion. jitter. echo. 40. The most common form of error control by the receiver is the _____ method. return a message repeat transmission do nothing correct the error