Introduction to Computing MCQs with Answers
Practice important Introduction to Computing MCQs with answers and explanations.
Chapter: 40
Q621:
In binary arithmetic, how can you simulate division using addition?
A. By using only addition
B. By using repetitive subtraction
C. By shifting bits
D. By using negation
Correct Answer:
B
Chapter: 41
Q622:
What is the primary role of a controller in a computer system?
A. To manage the CPU's operations
B. To handle communication between the computer and peripheral devices
C. To increase the computer's processing speed
D. To store data temporarily
Correct Answer:
B
Chapter: 41
Q623:
How does a controller typically connect to peripheral devices?
A. Via a USB or FireWire port
B. Via an internal bus only
C. By directly attaching to the CPU
D. Through a special memory circuit
Correct Answer:
A
Chapter: 41
Q624:
What does a controller do with messages and data between the computer and peripheral devices?
A. Encrypts the data
B. Translates the data into compatible forms
C. Stores the data permanently
D. Sends the data without alteration
Correct Answer:
B
Chapter: 41
Q625:
What is a common standard developed for controllers to handle various devices?
A. Parallel port
B. Serial port
C. Universal Serial Bus (USB)
D. VGA port
Correct Answer:
C
Chapter: 41
Q626:
How can a single USB controller be used in modern computers?
A. By connecting only to keyboards
B. By handling various USB-compatible devices like printers and smartphones
C. By connecting exclusively to internal hard drives
D. By managing only audio devices
Correct Answer:
B
Chapter: 41
Q627:
How does the CPU communicate with controllers?
A. Through the internet
B. By direct cable connection
C. By using the same bus that connects to main memory
D. By wireless signals
Correct Answer:
C
Chapter: 41
Q628:
What type of instruction is used by the CPU to send a bit pattern to a controller?
A. Load instruction
B. Store instruction
C. Jump instruction
D. Compare instruction
Correct Answer:
B
Chapter: 41
Q629:
How does a CPU receive a bit pattern from a controller?
A. By executing a STORE instruction
B. By executing a LOAD instruction
C. By using direct memory access
D. By using an interrupt signal
Correct Answer:
B
Chapter: 41
Q630:
Which of the following devices can connect to a USB controller?
A. Only printers
B. Only external hard drives
C. Mice, printers, scanners, and smartphones
D. Only digital cameras
Correct Answer:
C
Chapter: 41
Q631:
What does a controller typically contain to perform its functions?
A. A large main memory
B. A simple CPU and memory circuitry
C. Only passive components
D. An advanced graphics processor
Correct Answer:
B
Chapter: 42
Q632:
What does DMA stand for in computer systems?
A. Direct Memory Access
B. Direct Machine Access
C. Dynamic Memory Access
D. Direct Machine Allocation
Correct Answer:
A
Chapter: 42
Q633:
How does DMA benefit a computer's performance?
A. By reducing CPU speed
B. By allowing the CPU and controller to operate simultaneously
C. By increasing the number of CPUs
D. By storing more data in the cache
Correct Answer:
B
Chapter: 42
Q634:
What happens during a DMA operation?
A. The CPU waits for the data transfer to complete
B. The controller performs data transfer while the CPU continues other tasks
C. The CPU directly controls the data transfer
D. The data is transferred via wireless signals
Correct Answer:
B
Chapter: 42
Q635:
What is a significant drawback of using DMA?
A. It simplifies bus communication
B. It increases the CPU's speed
C. It complicates communication over the computer's bus
D. It eliminates the need for controllers
Correct Answer:
C
Chapter: 42
Q636:
What problem is known as the von Neumann bottleneck?
A. The issue of CPU speed being too high
B. The problem of limited cache memory
C. The limitation of a central bus in accessing memory and controllers
D. The challenge of connecting multiple CPUs
Correct Answer:
C
Chapter: 42
Q637:
What role does a controller play in DMA?
A. It increases CPU processing power
B. It manages the direct data transfer between main memory and peripherals
C. It speeds up the CPU’s clock rate
D. It controls the graphics output
Correct Answer:
B
Chapter: 42
Q638:
In DMA, what does the CPU do while the controller is transferring data?
A. The CPU stops all activities
B. The CPU continues executing other tasks
C. The CPU checks for errors in data transfer
D. The CPU directly manages the data transfer
Correct Answer:
B
Chapter: 42
Q639:
How is data transferred from a disk to main memory using DMA?
A. By the CPU directly copying the data
B. By the controller reading the disk and placing data in memory
C. By using wireless technology
D. By encrypting the data during transfer
Correct Answer:
B
Chapter: 42
Q640:
What is the central bus used for in a von Neumann architecture?
A. Fetching instructions and data from memory
B. Directly controlling peripherals
C. Managing power supply
D. Connecting external devices
Correct Answer:
A