Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Chapter: 31
Q501:
What is MP3 short for?
A. MPEG Layer 3
B. Motion Picture 3
C. Media Processing 3
D. Music Playback 3
Correct Answer:
A
Chapter: 31
Q502:
Which property of the human ear does MP3 compression exploit?
A. Temporal masking
B. Spatial masking
C. Frequency doubling
D. Color masking
Correct Answer:
A
Chapter: 31
Q503:
What is the maximum amount of video that can be recorded with 128MB of storage using MPEG techniques?
A. About one hour
B. About 30 minutes
C. About two hours
D. About five hours
Correct Answer:
A
Chapter: 31
Q504:
How many popular songs can a 1 GB storage device hold using MP3 compression?
A. About 400
B. About 100
C. About 250
D. About 500
Correct Answer:
A
Chapter: 31
Q505:
What is a key goal of audio and video compression aside from saving storage space?
A. Achieving timely data transmission
B. Enhancing image resolution
C. Increasing file size for better quality
D. Reducing color depth
Correct Answer:
A
Chapter: 31
Q506:
What is the unit for measuring data transmission speeds in communication systems?
A. Bits per second (bps)
B. Bytes per second (Bps)
C. Kilobytes per second (KBps)
D. Gigabytes per second (GBps)
Correct Answer:
A
Chapter: 31
Q507:
What is the typical transfer rate required for video presentations using MPEG techniques?
A. 40 Mbps
B. 10 Mbps
C. 100 Kbps
D. 1 Gbps
Correct Answer:
A
Chapter: 31
Q508:
What is the typical transfer rate required for MP3 recordings?
A. 64 Kbps
B. 128 Kbps
C. 256 Kbps
D. 1 Mbps
Correct Answer:
A
Chapter: 31
Q509:
How does MPEG compression benefit video conferencing?
A. By allowing timely data transmission
B. By increasing color accuracy
C. By enhancing sound quality
D. By providing higher resolution
Correct Answer:
A
Chapter: 31
Q510:
What technique does MPEG use to encode video frames?
A. A combination of I-frames and relative encoding
B. Only JPEG compression
C. Only temporal encoding
D. Only frequency masking
Correct Answer:
A
Chapter: 31
Q511:
What role does temporal masking play in MP3 compression?
A. It helps remove details that are not detectable immediately after a loud sound
B. It increases the bit rate for better sound quality
C. It reduces the color depth of audio signals
D. It enhances the frequency range of audio
Correct Answer:
A
Chapter: 31
Q512:
How does frequency masking contribute to MP3 compression?
A. It allows louder sounds to mask softer sounds at nearby frequencies
B. It improves the resolution of audio signals
C. It adds additional frequencies to the audio
D. It reduces the dynamic range of audio
Correct Answer:
A
Chapter: 32
Q513:
What are the three main parts of a CPU?
A. Arithmetic/Logic Unit, Control Unit, Register Unit
B. Arithmetic Unit, Memory Unit, I/O Unit
C. Control Unit, Memory Unit, Storage Unit
D. Arithmetic Unit, I/O Unit, Bus Unit
Correct Answer:
A
Chapter: 32
Q514:
What is the function of the arithmetic/logic unit in a CPU?
A. Performs operations on data
B. Coordinates machine activities
C. Transfers data to and from memory
D. Manages power supply to the CPU
Correct Answer:
A
Chapter: 32
Q515:
What is the role of the control unit in a CPU?
A. Coordinates the machine’s activities
B. Performs mathematical calculations
C. Stores temporary data
D. Connects the CPU to the memory
Correct Answer:
A
Chapter: 32
Q516:
What do general-purpose registers in a CPU do?
A. Serve as temporary holding places for data
B. Directly perform arithmetic operations
C. Store data permanently
D. Manage CPU power consumption
Correct Answer:
A
Chapter: 32
Q517:
How does the CPU transfer data from memory to registers?
A. By supplying the address and an electronic signal
B. By directly writing data to the memory
C. By performing calculations on the data
D. By activating the control unit only
Correct Answer:
A
Chapter: 32
Q518:
What is the purpose of the bus in a CPU system?
A. To transfer data between the CPU and main memory
B. To increase the CPU's processing speed
C. To store data temporarily
D. To connect the CPU to external devices
Correct Answer:
A
Chapter: 32
Q519:
What does the CPU do to store data in memory?
A. Provides the address and data along with a store signal
B. Directly writes data to the registers
C. Calculates the data and sends it to the control unit
D. Reads data from external storage devices
Correct Answer:
A
Chapter: 32
Q520:
What is involved in adding two values stored in main memory?
A. Transferring data to registers, performing addition, and storing the result
B. Performing addition directly in main memory
C. Sending the data to external devices for processing
D. Calculating the result in the control unit
Correct Answer:
A