Practice Execution Cycle (12.2) - Fetch Cycle - Computer Organisation and Architecture

Practise this section

10 questions

Flashcard drill
4 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 does the Program Counter (PC) do?
Show hintHide hint
Think about instruction sequences.
Question 2.
What is stored in the Instruction Register (IR)?
Show hintHide hint
It's like an instruction manual.
3Question 3.
What does the Program Counter (PC) point to?
- The last instruction
- The next instruction's address
- The current instruction
Show hintHide hint
Think about what it directs.
4Question 4.
True or False: The Memory Buffer Register (MBR) holds addresses.
- True
- False
Show hintHide hint
Consider what each register holds.
Question 5.
Given a scenario where the PC indicates an address that does not contain valid instructions, explain what happens next and how that impacts the processor.
Show hintHide hint
Think about error handling in CPU operations.
Question 6.
Assume the MAR holds an address and the MBR is empty. Describe the sequence of operations for fetching an instruction.
Show hintHide hint
Focus on the timing and order of signals.

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