1. What is the defining feature of a real-time system?
(A) High memory usage
(B) Correctness depends on timing
(C) Fast execution speed only
(D) Large storage capacity
2. Which real-time system strictly cannot miss deadlines?
(A) Hard real-time system
(B) Soft real-time system
(C) Firm real-time system
(D) Distributed system
3. In which real-time system can occasional deadline misses be tolerated?
(A) Hard real-time
(B) Safety-critical
(C) Embedded real-time
(D) Soft real-time
4. What does the term “deadline” refer to in real-time systems?
(A) Start time of task
(B) Maximum allowed completion time
(C) Idle CPU time
(D) Execution speed
5. Which characteristic ensures predictable timing behavior?
(A) Portability
(B) Flexibility
(C) Scalability
(D) Determinism
6. What is latency in a real-time system?
(A) CPU processing speed
(B) Memory access time
(C) Delay between input and response
(D) Task execution order
7. Which scheduling method is commonly used in real-time systems?
(A) Priority-based scheduling
(B) FCFS scheduling
(C) Round robin
(D) Random scheduling
8. What happens if a hard real-time system misses a deadline?
(A) Minor performance loss
(B) Task is rescheduled
(C) No noticeable effect
(D) System failure may occur
9. Which characteristic focuses on meeting time constraints?
(A) Timeliness
(B) Reliability
(C) Maintainability
(D) Availability
10. What does jitter indicate in a real-time system?
(A) Memory overflow
(B) CPU overheating
(C) Variation in response time
(D) Power failure
11. Which system lies between hard and soft real-time systems?
(A) Online system
(B) Firm real-time system
(C) Embedded system
(D) Distributed system
12. Which feature ensures the system continues working despite failures?
(A) Determinism
(B) Fault tolerance
(C) Throughput
(D) Timeliness
13. What is throughput in real-time systems?
(A) Execution predictability
(B) Interrupt handling
(C) Maximum delay
(D) Tasks completed per unit time
14. Which component helps track time constraints?
(A) File manager
(B) Cache memory
(C) Real-time clock
(D) Compiler
15. Which characteristic ensures quick reaction to external events?
(A) Reusability
(B) Modularity
(C) Portability
(D) Responsiveness
16. What is the main goal of real-time scheduling?
(A) Reduce cost
(B) Increase memory
(C) Maximize storage
(D) Meet task deadlines
17. Which real-time system characteristic reduces deadline misses?
(A) Flexibility
(B) Compatibility
(C) Scalability
(D) Predictability
18. Which application is a hard real-time system?
(A) Video streaming
(B) Airbag control system
(C) Web browsing
(D) Online chat
19. Which characteristic ensures long-term correct operation?
(A) Scalability
(B) Portability
(C) Modularity
(D) Reliability
20. What is the focus of real-time system design?
(A) Graphics quality
(B) User interface
(C) Timing constraints
(D) Database size