Input Output Systems Quizzes - Master Computer Science (MEng)

Question 1

Which input device is primarily used to capture graphical images?

Accepted Answer

Scanner

Answer

Keyboard

Answer

Mouse

Answer

Printer

Question 2

What is the primary function of a bus architecture in an I/O system?

Accepted Answer

To establish connections between input/output devices, CPU, and memory.

Answer

To regulate the flow of data between different components.

Answer

To provide a unified communication channel for all devices.

Answer

To manage conflicts when multiple devices access the same resource.

Question 3

Identify an example of an expansion bus used in computer systems.

Accepted Answer

PCIe

Answer

USB

Answer

SATA

Answer

Ethernet

Question 4

Which type of software commonly interacts with I/O devices in a computer system?

Accepted Answer

Device drivers

Answer

Operating systems

Answer

Compilers

Answer

Databases

Question 5

What is the purpose of polling in an I/O system?

Accepted Answer

To continuously monitor the status of I/O devices.

Answer

To initiate data transfer between devices.

Answer

To resolve conflicts between multiple devices.

Answer

To synchronize input and output operations.

Question 6

What is the primary responsibility of the Southbridge chipset in an I/O system?

Accepted Answer

Managing low-speed I/O devices such as keyboards and mice.

Answer

Providing connectivity to high-speed devices like graphics cards.

Answer

Facilitating communication between the CPU and memory.

Answer

Controlling the power supply to the system.

Question 7

What is the purpose of an interrupt?

Accepted Answer

To signal an event to the CPU

Answer

To transfer data between devices

Answer

To control bus access

Answer

To handle errors

Question 8

What is the primary function of a bus?

Accepted Answer

To provide a communication pathway between components

Answer

To control device access

Answer

To store data

Answer

To perform complex calculations

Question 9

What is the main difference between synchronous and asynchronous data transfer?

Accepted Answer

Synchronous transfers occur at a fixed rate, while asynchronous transfers do not

Answer

Synchronous transfers require a handshake signal, while asynchronous transfers do not

Answer

Synchronous transfers are faster than asynchronous transfers

Answer

Asynchronous transfers are more reliable than synchronous transfers

Question 10

What is the essential function of an interrupt controller?

Accepted Answer

Manage and prioritize incoming interrupts for processing

Answer

Transmit data between the CPU and input/output devices

Answer

Convert analog signals into digital signals

Answer

Store temporary data during data transfers

Question 11

What is the main purpose of a handshake protocol in data transfer?

Accepted Answer

Ensure successful data transfer between devices

Answer

Detect errors during data transmission

Answer

Synchronize clock speeds of sending and receiving devices

Answer

Reduce the amount of data transferred

Question 12

Identify a common type of input device:

Accepted Answer

Keyboard

Answer

Printer

Answer

Monitor

Answer

Speaker

Question 13

Explain the role of a device driver in an input/output system.

Accepted Answer

Provide an interface between hardware devices and the operating system

Answer

Manage memory allocation for data transfer

Answer

Handle interrupt requests from input/output devices

Answer

Convert data formats between different devices

Question 14

Which of the following characterizes synchronous data transfer?

Accepted Answer

Data is transferred at a fixed rate

Answer

Data is transferred in bursts

Answer

Data is transferred on demand

Answer

Data is transferred in a random order

Question 15

What is the primary function of a memory-mapped I/O system?

Accepted Answer

Allow input/output devices to directly access memory

Answer

Reduce the number of interrupts generated by input/output devices

Answer

Improve the performance of data transfer operations

Answer

Isolate input/output devices from the rest of the system

Question 16

Describe the purpose of a port expander in an input/output system.

Accepted Answer

Increase the number of available input/output ports

Answer

Convert between different types of input/output signals

Answer

Isolate input/output devices from the rest of the system

Answer

Reduce the amount of data transferred

Question 17

For embedded systems requiring high-speed data transfer, which DMA mode is most appropriate?

Accepted Answer

Burst Mode

Answer

Cycle Steal

Answer

Transparent Mode

Question 18

Which of the following is **not** a type of Input/Output (I/O) device?

Accepted Answer

CPU

Answer

Network card

Answer

Printer

Answer

Keyboard

Question 19

What is the primary purpose of an interrupt in a computer system?

Accepted Answer

To pause the CPU and direct its attention to a specific event

Answer

To transfer data from memory to the CPU

Answer

To store data temporarily before it is processed

Question 20

Which of the following is a bus architecture that allows for data transfer between devices and memory without involving the CPU?

Accepted Answer

Direct Memory Access (DMA)

Answer

USB

Answer

PCI Express

Answer

Ethernet

Question 21

What is the primary function of a system bus in a computer architecture?

Accepted Answer

To facilitate communication between the CPU and other components

Answer

To control the flow of data between I/O devices

Answer

To store data and instructions for the CPU

Question 22

Which of the following is **not** a factor to consider when designing an efficient I/O subsystem?

Accepted Answer

Cost

Answer

Latency

Answer

Reliability

Answer

Throughput

Question 23

What is the key distinction between synchronous and asynchronous I/O operations?

Accepted Answer

Timing dependency on the CPU

Answer

Error checking

Answer

Interrupt handling

Answer

Data transfer rate

Question 24

What is the main purpose of cache memory in an I/O system?

Accepted Answer

To store frequently accessed data and reduce I/O latency

Answer

To handle interrupts more efficiently

Answer

To increase the bandwidth of I/O devices