quiz

I/O interface

I/O Interface: An Overview

1. Which component in the I/O interface converts signals from peripheral devices into a format the CPU can understand?

  • A) I/O Port
  • B) Device Controller
  • C) Interrupt Handler
  • D) Memory-Mapped I/O
B) Device Controller Explanation

2. Which type of I/O interface transmits data one bit at a time over a single channel?

  • A)  Parallel I/O
  • B) Serial I/O
  • C) Synchronous I/O
  • D) Memory-Mapped I/O
B) Serial I/O Explanation

3. Which of the following commands is NOT typically used in I/O handshaking?

  • A) BUSY
  • B) READY
  • C) WAIT
  • D) LOAD
D) LOAD Explanation

4. Which I/O technique involves the CPU continuously checking the status of an I/O device? 

  • A)  Interrupt-driven I/O
  • B) Direct Memory Access
  • C)  Polling 
  • D) All of these
C) Polling  Explanation

5. In a memory-mapped I/O system:

  • A)  I/O devices are treated as separate entities from memory.
  • B) The same address space is shared by memory and I/O devices.
  • C) There is no separate I/O space, and all data transfer occurs through specific I/O instructions.
  • D) The CPU uses different instructions to access memory and I/O devices.
B) The same address space is shared by memory and I/O devices. Explanation

Quick Links