What is the primary purpose of a data compressor in digital communications?

Embedded unit-5

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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To encrypt data
To reduce the size of the data
To increase the speed of the processor
To store more data
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which algorithm is commonly used for lossless data compression?
FFT (Fast Fourier Transform)
DCT (Discrete Cosine Transform)
Huffman Coding
RSA Encryption
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
An alarm clock embedded system is most likely to use which of the following to keep time accurately?
A resistor-capacitor (RC) oscillator
A crystal oscillator
A digital counter
A software timer
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In audio players, the DAC stands for:
Digital Audio Controller
Data Access Control
Digital-to-Analog Converter
Direct Audio Coder
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A software modem is also known as a:
Winmodem
Hardmodem
Sysmodem
Softmodem
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The primary sensor used in a digital still camera is a:
A) CCD (Charge-Coupled Device)
B) CMOS (Complementary Metal-Oxide-Semiconductor)
C) PIR (Passive Infrared Sensor)
D) Both A and B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main advantage of using CMOS sensors over CCD in digital cameras?
Higher power consumption
Better image quality in low light
Lower cost and power consumption
More complex circuitry
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