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1. Which signal is digital when transmitted? (a) PSK (b) QAM (c) HDB3 encoded data (d) Frequency Modulation 6. It is a process of representing digital information as a digital signal (a) Digital modulation (b) Analog Modulation (c) PCM (d) Digital Line Encoding 8. Determing the CRC remainder for the data and CRC polynomial shown below: G(x) = x^5+x^4+x^2+1 P(x) = x^7+X^5+x^3+x+1 9. The minimum bandwidth for a 32PSK modulated signal with a baud rate of 3000baud is (a) 1500Hz (b) 3000Hz (c) 600Hz (d) none of the choices 10.Which of the following is true? (a) VRC can detect all transmission errors (b) VRC can detect the error when the number of errors in a character is even numbered. (c) VRC can detect the error when the number of errors in a character is odd numbered (d) VRC can prevent errors from occurring