Signal Transmission Basics Quiz: Noise, Interference, and Communication Channels Quiz

1. Noise Types in Communication

   Which of the following is an example of random electrical noise affecting a communication channel?

   1. Thermal noise
   2. Harmful noice
   3. Latency delay
   4. Amplitude glitch
   5. Phase shift error

2. Signal to Noise Ratio Meaning

   What does a high signal-to-noise ratio (SNR) indicate about the quality of a communication channel?

   1. The signal is much stronger than the noise
   2. There is more latency than throughput
   3. The channel is only suitable for analog signals
   4. The channel is prone to distortion
   5. Error correction is impossible

3. Crosstalk Scenario

   In a telephone line, simultaneous conversations interfere with each other causing unwanted sounds. What is this type of interference called?

   1. Crosstalk
   2. Bandwidth loss
   3. Noisefloor
   4. Reflection error
   5. Droput

4. Channel Bandwidth Impact

   How does increasing the bandwidth of a channel generally affect the data transmission rate, assuming noise levels remain unchanged?

   1. It increases the maximum data rate
   2. It decreases the maximum data rate
   3. It causes more phase jitter
   4. It reduces signal strength
   5. It introduces time delays

5. Interference Type Identification

   Electromagnetic interference (EMI) can disrupt signal transmission. What is a common source of EMI in indoor environments?

   1. Fluorescent lights
   2. Low data packkits
   3. Balanced cables
   4. Perfect shielding
   5. Packet error rate

6. Practical Example of Attenuation

   A digital signal sent through a long cable slowly becomes weaker as distance increases. What property describes this phenomenon?

   1. Attenuation
   2. Bitrate reduction
   3. Subnetting
   4. Reflection
   5. Spurious emission

7. Simple Code: Noise Simulation

   Given the following Python snippet, which output best represents a noisy digital signal?nnsignal = [1,1,1,1,1]nnoisy_signal = [1,0,1,1,0]nprint(noisy_signal)n

   1. [1,0,1,1,0]
   2. [1,1,1,1,1]
   3. [0,0,0,0,0]
   4. [1,1,0,1,1]
   5. [1,1,1,0,1]

8. Analog vs Digital Transmission

   Which statement correctly describes digital transmission in the presence of noise compared to analog transmission?

   1. Digital signals are more resistant to noise due to discrete levels
   2. Analog signals are immune to all types of noise
   3. Digital signals carry less data than analog signals
   4. Noise cannot affect digital signals at all
   5. Digital signals require more amplificcation

9. Error Correction Role

   What is the typical role of error-correcting codes in data transmission?

   1. To detect and fix errors caused by noise
   2. To amplify the original signal
   3. To reduce cable length requirements
   4. To eliminate transmission delay
   5. To lower the bandwidth needed

10. Scenario: Impulse Noise

    During a thunderstorm, occasional large spikes disrupt a wireless signal. What type of noise is this?

    1. Impulse noise
    2. Thermal noise
    3. White noise
    4. Gaussian noise
    5. Noisefloor