1. Network Fundamentals

Signal Encoding — Quiz

Test your understanding of signal encoding with 5 practice questions.

Practice Questions

Question 1

In a digital communication system, what is the primary challenge of using a unipolar Non-Return to Zero (NRZ) encoding scheme for long sequences of identical bits?

Question 2

Which of the following encoding schemes is most effective in providing both synchronization and DC balance, making it suitable for high-speed data transmission over long distances?

Question 3

Consider a scenario where a digital signal is transmitted using Differential Manchester encoding. If the previous bit was a '0' and the current bit to be transmitted is a '1', what will be the characteristic of the signal transition at the beginning of the bit period?

Question 4

If a digital signal uses Quadrature Phase Shift Keying (QPSK) for modulation, how many distinct phase shifts are typically used to represent bits?

Question 5

A communication system employs a 16-QAM (Quadrature Amplitude Modulation) scheme. How many bits can be represented by each symbol in this scheme?