Match the following.
2021
Match the following.

- A.
i – D, ii – C, iii – B, iv – A
- B.
i – A, ii – B, iii – C, iv – D
- C.
i – D, ii – A, iii – B, iv – C
- D.
i – B, ii – C, iii – D, iv – A
Attempted by 532 students.
Show answer & explanation
Correct answer: A
The objective is to match the different types of Operating Systems (OS) with their primary characteristics or performance goals.
Correct Matches:
Batch Processing System — D (CPU idle time): In early batch systems, the CPU often sat idle while waiting for slow I/O devices (like card readers) to load the next job in the batch.
Multiprogramming — C (Resource utilization): The main goal of multiprogramming is to keep the CPU and other resources busy at all times by having multiple jobs ready in memory.
Time sharing — B (Good response time): Time-sharing systems are designed to provide interactive use for multiple users, making quick response time a critical performance metric.
Real-time — A (Meeting time constraint): Real-time systems are defined by their ability to process data and respond within strict, predetermined time constraints (deadlines).
Correct Option: Option 1 (i–D, ii–C, iii–B, iv–A)