CA Quiz LU7

What are the two main areas of an I/O module?

• Memory and Cache

• CPU and Main Memory

• I/O devices and Device controllers

• Processor and Bus

Which strategy allows the CPU to carry on with other operations until the I/O module is ready to transfer data?

• Direct Memory Access (DMA)

• Programmed I/O

• Cycle Stealing

• Interrupt Driven I/O

What is the purpose of a DMA controller in Direct Memory Access?

• To synchronize I/O devices

• To handle interrupts from I/O modules

• To transfer data between I/O module and main memory without CPU intervention

• To control the CPU operations

What is the main advantage of using Interrupt Driven I/O over Programmed I/O?

• Increased CPU control over I/O modules

• Faster data transfer rate

• Reduced CPU waiting time

• Simplified data encoding

Which type of interface is used for high-speed peripherals like disk drives?

• USB interfaces

• Serial interfaces

• Wireless interfaces

• Parallel interfaces

What is the purpose of handshaking in I/O interfaces?

• To compensate for speed differences between interfaces

• To synchronize the CPU and I/O module

• To transfer data between peripherals

• To acknowledge receipt of data

Which category of I/O devices allows communication between the computer and its environment?

• Human readable devices

• Machine readable devices

• Source/sink devices

• Storage devices

What is the function of an I/O channel in a computer system?

• To synchronize I/O devices

• To control the CPU operations

• To handle interrupts from I/O modules

• To improve speed and take load off CPU

Which strategy involves the CPU waiting for data to be read/written or checking the status of I/O modules?

• Interrupt Driven I/O

• Cycle Stealing

• Direct Memory Access (DMA)

• Programmed I/O

What is the purpose of a data buffer in an I/O module?

• To detect errors in data transfer

• To store data temporarily during transfer

• To coordinate the flow of traffic between internal resources and external devices

• To interface with the CPU and Memory