Practice File Transfer Calculation Example (29.4.3) - Overview of DMA and Interrupt Driven I/O

Practise this section

10 questions

Flashcard drill
3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the main function of DMA?
Show hintHide hint
Think about how efficiency can be gained in data transfer.
Question 2.
Define burst mode.
Show hintHide hint
Focus on the term 'continuous'.
3Question 3.
What does DMA stand for?
- Direct Memory Access
- Dynamic Memory Allocation
- Direct Memory Allocation
Show hintHide hint
It involves memory and devices.
4Question 4.
True or False: Cycle stealing mode allows the CPU to do other tasks while data are being transferred.
- True
- False
Show hintHide hint
Consider what happens during a transfer.
Question 5.
Consider a 10MB file transfer in a 32-bit processor system where the maximum transfer limit is 128KB per interrupt. How many interrupts are needed?
Show hintHide hint
Convert MB to KB and divide by the transfer limit.
Question 6.
Analyze the impact of using burst mode for real-time applications that require continuous data processing.
Show hintHide hint
Consider how frequently the CPU needs to process tasks simultaneously.

6 more questions in this section. Enroll free to practise them all.