Practice Step-by-step Code Execution (23.4.2)

Practise this section

9 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
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is an interrupt?
Show hintHide hint
Think of scenarios when a task might be interrupted.
Question 2.
What does the Program Counter do?
Show hintHide hint
Consider its role in instruction flow.
3Question 3.
What is the first thing the system does when an interrupt occurs?
- Continue executing the current instruction
- Save the PC value
- Launch a new task
Show hintHide hint
Think about why retaining the state is crucial.
4Question 4.
True or False: The Instruction Cycle Code shows whether the system is executing an instruction.
- True
- False
Show hintHide hint
Recall the types of states indicated by ICC.
Question 5.
Design a flowchart to illustrate the steps taken when an interrupt occurs, detailing what happens before and after the ISR.
Show hintHide hint
Map out the sequence clearly for each step.
Question 6.
Provide a code snippet of a simple program that could be interrupted, explaining how the flow would change with an interrupt.
Show hintHide hint
Consider how data is accessed and manipulated in a loop.

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