I/O Devices and Interfaces: Interactive Learning Quizzes for Computer Architecture

Question 1

Which of the following is NOT a feature of I/O devices?

Accepted Answer

Exclusively exist as physical components

Answer

Perform input and output operations

Answer

Transfer data to and from the computer

Answer

Serve as a communication channel with the external environment

Question 2

Which I/O interface type employs a shared bus to connect devices?

Accepted Answer

Bus interface

Answer

Parallel interface

Answer

Serial interface

Answer

Network interface

Question 3

Which data transfer method involves transmitting data sequentially, one bit at a time?

Accepted Answer

Serial transfer

Answer

Parallel transfer

Answer

Block transfer

Answer

DMA transfer

Question 4

Which I/O device is commonly used for long-term storage of large data volumes?

Accepted Answer

Hard disk drive

Answer

Keyboard

Answer

Mouse

Answer

Printer

Question 5

What is the purpose of a PCI bus?

Accepted Answer

Facilitating high-speed communication between components

Answer

Connecting peripheral devices to the motherboard

Answer

Controlling data flow between the CPU and memory

Answer

Storing firmware and BIOS settings

Question 6

Which of the following is not a key characteristic of parallel interfaces?

Accepted Answer

Simplified cabling

Answer

High speed data transfer

Answer

Bidirectional data flow

Answer

Long-distance transmission

Question 7

Which I/O device interface is widely used for connecting peripheral devices such as keyboards and mice?

Accepted Answer

USB

Answer

PCI

Answer

SATA

Answer

HDMI

Question 8

What is the primary purpose of a buffer in I/O operations?

Accepted Answer

To provide temporary storage for data during transfer

Answer

To convert data between different formats

Answer

To regulate the flow of data between devices

Answer

To provide error correction

Question 9

Which component is NOT part of an input/output (I/O) device interface?

Accepted Answer

Memory

Answer

Data bus

Answer

Address bus

Answer

Control bus

Question 10

What is the primary function of a parallel port?

Accepted Answer

Transfer data 8 bits at a time

Answer

Transfer data 16 bits at a time

Answer

Transfer data serially

Answer

Control external devices

Question 11

Which data transfer technique involves sending data one bit at a time?

Accepted Answer

Serial transfer

Answer

Parallel transfer

Answer

Bus transfer

Answer

DMA transfer

Question 12

What is the primary benefit of using a direct memory access (DMA) controller for data transfer?

Accepted Answer

Frees up the CPU for other tasks

Answer

Increases data transfer speed

Answer

Reduces system latency

Answer

Improves data accuracy

Question 13

What is the primary purpose of an interrupt in I/O operations?

Accepted Answer

Notify the CPU when an I/O device needs attention

Answer

Transfer data between the CPU and an I/O device

Answer

Control the flow of data between devices

Answer

Synchronize multiple I/O devices

Question 14

Which of the following is NOT a type of I/O addressing?

Accepted Answer

Bus mastering

Answer

Memory-mapped I/O

Answer

Isolated I/O

Answer

Programmed I/O

Question 15

What is the main advantage of using a programmed I/O addressing scheme?

Accepted Answer

Simpler hardware design

Answer

Faster data transfer rates

Answer

Increased data security

Answer

Reduced power consumption

Question 16

Which type of I/O device converts digital data into analog signals suitable for transmission?

Accepted Answer

Modulator

Answer

Demodulator

Answer

Codec

Answer

UART

Question 17

How do memory-mapped I/O systems differ from isolated I/O systems?

Accepted Answer

Memory-mapped I/O devices have dedicated memory addresses, while isolated I/O devices do not

Answer

Isolated I/O devices use interrupts, while memory-mapped I/O devices do not

Answer

Memory-mapped I/O systems offer higher performance than isolated I/O systems

Answer

Isolated I/O systems provide enhanced security compared to memory-mapped I/O systems

Question 18

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

Accepted Answer

To allow multiple I/O devices to share a single I/O port

Answer

To convert digital data to analog signals

Answer

To facilitate data transfer between I/O devices and memory

Answer

To translate I/O commands into CPU instructions

Question 19

Which of the following is a typical example of a parallel I/O interface?

Accepted Answer

PCI

Answer

RS-232

Answer

I2C

Answer

USB

Question 20

What is a potential drawback of employing a DMA (Direct Memory Access) controller in I/O operations?

Accepted Answer

Increased system latency

Answer

Lower CPU workload

Answer

Faster data transfer

Answer

No need for interrupts

Question 21

Which I/O technique transmits data as a continuous stream of bits?

Accepted Answer

Serial I/O

Answer

Parallel I/O

Answer

Block I/O

Answer

Synchronous I/O

Question 22

What is the primary purpose of a memory-mapped I/O interface?

Accepted Answer

Allows I/O devices to access memory directly, as if it were their own

Answer

Provides a buffer between I/O devices and memory

Answer

Translates I/O addresses to physical addresses

Answer

Controls data flow between I/O devices and the processor

Question 23

Which of the following is a key characteristic of programmed I/O?

Accepted Answer

CPU-intensive

Answer

High data transfer rate

Answer

Supports multiple I/O devices concurrently

Answer

Requires minimal hardware support

Question 24

Which factor has the most significant impact on the performance of I/O operations?

Accepted Answer

Data transfer rate

Answer

I/O interface

Answer

Processor speed

Answer

Memory capacity

Question 25

What is the main advantage of using DMA (Direct Memory Access) in I/O operations?

Accepted Answer

Allows I/O devices to access memory without involving the CPU, reducing overhead

Answer

Improves the security of I/O data

Answer

Facilitates the sharing of I/O resources among multiple devices

Answer

Simplifies the design of I/O hardware

Question 26

Which of the following is an example of a polling-based I/O scheme?

Accepted Answer

Continuously checking the status of an I/O device

Answer

Waiting for an interrupt signal from the I/O device

Answer

Using a dedicated I/O processor to handle I/O requests

Answer

Employing a DMA controller

Question 27

What is the primary benefit of using a layered I/O software architecture?

Accepted Answer

Modularity, reusability, and simplified development

Answer

Improved performance by optimizing each layer for specific tasks

Answer

Enhanced security by isolating different layers from potential vulnerabilities

Answer

Reduced complexity by consolidating all I/O functionality into a single layer

Question 28

Which I/O interface type employs a sequential communication protocol?

Accepted Answer

Serial interface

Answer

Parallel interface

Answer

USB interface

Answer

ATA interface

Question 29

Identify the primary function of a DMA controller:

Accepted Answer

Managing data exchange between I/O devices and memory

Answer

Interrupting the CPU upon completion of I/O operations

Answer

Performing data format conversion

Answer

Storing status information of I/O devices

Question 30

In an I/O system, what is the primary purpose of a bus?

Accepted Answer

Providing a pathway for data transmission between devices

Answer

Regulating the timing of data transfers

Answer

Converting data formats

Answer

Storing configuration details of I/O devices

Question 31

What is the primary function of a device driver?

Accepted Answer

Facilitating communication between the operating system and I/O devices

Answer

Providing a user-friendly interface for I/O device access

Answer

Performing data conversion and formatting

Answer

Controlling the physical aspects of I/O devices

Question 32

In an I/O system, what is the purpose of a cache?

Accepted Answer

Storing frequently accessed data to improve performance

Answer

Minimizing the number of interrupts generated by I/O devices

Answer

Converting data formats between different devices

Answer

Isolating I/O devices from the operating system

Question 33

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

Accepted Answer

Central Processing Unit (CPU)

Answer

Keyboard

Answer

Mouse

Answer

Printer

Question 34

UART stands for:

Accepted Answer

Universal Asynchronous Receiver Transmitter

Answer

Uniform Array Recording Technology

Answer

Uninterruptible Alternating Regulating Transfer

Answer

Universal Analog Resonating Transmitter

Question 35

For transferring large amounts of data efficiently, which data transfer mode is preferred?

Accepted Answer

Direct Memory Access (DMA)

Answer

Polling

Answer

Interrupt-driven

Answer

Programmed I/O

Question 36

Which bus standard is specifically designed to facilitate high-speed data transfer between devices?

Accepted Answer

Peripheral Component Interconnect Express (PCIe)

Answer

Industry Standard Architecture (ISA)

Answer

Universal Serial Bus (USB)

Answer

Serial ATA (SATA)

Question 37

What is the key distinction between synchronous and asynchronous data transfer?

Accepted Answer

Synchronous data transfer utilizes a clock signal, while asynchronous does not.

Answer

Asynchronous data transfer is faster than synchronous.

Answer

Synchronous data transfer offers higher reliability than asynchronous.

Answer

There is no significant difference between synchronous and asynchronous data transfer.