QUESTION 1 ________ is a line coding technique in which a logical “1” or “0” is

Question

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

a. NRZ

b. Manchester

c. Bipolar AMI

d. B8ZS

Explanation / Answer

QUESTION 1: a. NRZ QUESTION 2: True QUESTION 3: b. Synchronous QUESTION 4: d. All statements are correct

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