QUESTION 1

________ is a line coding technique in which a logical 1 or 0 is represented by a voltage transition (e.g., low-to-high or high-to-low voltages) in the middle of the clock cycle.

		a. NRZ
		b. Manchester
		c. Bipolar AMI
		d. B8ZS

QUESTION 2

By using 4B/5B, you introduce 20% overhead.

True

False

QUESTION 3

Which timing and data synchronization method depends upon the data to recover timing.

		a. Asynchronous
		b. Synchronous
		c. Isochronous
		d. Plesiochronous

QUESTION 4

Select the correct statement(s) regarding error correction.

		a. error correction techniques can be classified as either error detection or error correction
		b. Forward error correction (FEC) depends upon the addition of redundant data bits to correct bit errors during transmission
		c. Use of parity bits and Cyclic Redundancy Check (CRC) enables error detection, but not error correction
		d. All statements are correct