PS4.C Quiz

Which of the following is a primary advantage of digital communication systems over analog systems?

• Higher noise levels

• Greater signal distortion

• Improved noise immunity

• Lower bandwidth efficiency

Tags

NGSS.MS-PS4-3

What is the main function of a modem in digital communication systems?

• To amplify signals

• To modulate and demodulate signals

• To store data

• To encrypt data

Tags

NGSS.MS-PS4-3

Explain how error detection is typically achieved in digital communication systems.

• By using parity bits

• By increasing signal power

• By reducing bandwidth

• By using analog signals

Tags

NGSS.MS-PS4-3

Which of the following is a common signal processing technique used to remove noise from a signal?

• Modulation

• Filtering

• Multiplexing

• Demodulation

Tags

NGSS.MS-PS4-3

Describe the role of Fourier Transform in signal processing.

• It compresses data

• It converts a signal from time domain to frequency domain

• It encrypts data

• It amplifies signals

Tags

NGSS.MS-PS4-3

Which of the following is a type of non-volatile information storage technology?

• RAM

• ROM

• Cache

• Register

What is the primary purpose of using RAID in information storage technologies?

• To increase data transfer speed

• To provide data redundancy and improve reliability

• To reduce power consumption

• To encrypt data

Which instrument is commonly used in science to measure temperature?

• Barometer

• Thermometer

• Oscilloscope

• Voltmeter

Explain how a spectrophotometer is used in scientific instrumentation.

• It measures the pH level of a solution

• It measures the intensity of light at different wavelengths

• It measures electrical resistance

• It measures sound frequency

Tags

NGSS.MS-PS4-2

Which of the following is a principle of wireless communication?

• Use of physical cables

• Transmission through radio waves

• Use of optical fibers

• Transmission through sound waves

Tags

NGSS.MS-PS4-2

NGSS.MS-PS4-3